Question 1

The thrust on a rocket is in:

Accepted Answer

The correct answer is: the same direction of the rocket. According to Newton's Third Law of Motion, the downward ejection of exhaust gases (action) creates an equal and opposite upward reaction force (thrust) on the rocket, which acts in the same direction as the rocket's motion.

Question 2

What causes the twinkling of stars?

Accepted Answer

The correct answer is: Atmospheric refraction of starlight. The twinkling of stars is caused by the atmospheric refraction of starlight as it passes through different layers of air with continuously changing refractive indices.

Question 3

The washing machine works on the principle of which of the following?

Accepted Answer

The correct answer is: Centrifugation. A washing machine works on the principle of centrifugation. High-speed spinning creates centrifugal force that separates water from clothes.

Question 4

'Short-sight' in the human eye can be corrected by using a proper:

Accepted Answer

The correct answer is: Concave Lens. Short-sightedness (Myopia) occurs when light focuses in front of the retina. It is corrected using a Concave (diverging) lens to push the focus back onto the retina.

Question 5

Consider the following pairs:

- A. Power: Watts
- B. Current: Volt
- C. Frequency: Hertz
- D. Resistance: Ampere

Which of the above pairs are correctly matched?

Accepted Answer

The correct answer is: A and C. Power is measured in Watts (A is correct) and Frequency in Hertz (C is correct). Current is measured in Amperes (not Volts) and Resistance in Ohms (not Amperes).

Question 6

Forces that act for a limited period of time are referred to as:

Accepted Answer

The correct answer is: Impulsive forces. An impulsive force is a large force acting on a body for a very short duration of time (e.g., a bat hitting a ball).

Question 7

The Standard of Length is based on

Accepted Answer

The correct answer is: The speed of light. Since 1983, the meter has been defined internationally as the length of the path travelled by light in vacuum during a time interval of 1/299,792,458 of a second. This is based on the speed of light.

Question 8

Match the following:

*List-I*
i. Microns
ii. Angstroms
iii. Fermi
iv. Kilometers

*List-II*
a. Distance between earth and moon.
b. Inter atomic distance in a solid
c. Size of nucleus.
d. Wavelength of infrared laser.

Accepted Answer

The correct answer is: i-d, ii-b, iii-c, iv-a. The correct matching of length scales is: Microns corresponds to infrared laser wavelength (i-d); Angstroms corresponds to inter-atomic distances (ii-b); Fermi corresponds to nuclear size (iii-c); Kilometers corresponds to Earth-Moon distance (iv-a).

Question 9

A plane travelling north at 200m/s turns and then travels south at 200m/s. The change in its velocity is:

Accepted Answer

The correct answer is: 400 m/s south. Initial velocity = 200 m/s North. Final velocity = 200 m/s South (which is -200 m/s North). Change in velocity = Final - Initial = -200 - 200 = -400 m/s North, which is equal to 400 m/s South.

Question 10

Which of the following situations are possible?

i. A body having velocity east and acceleration west.
ii. A body having constant velocity and variable acceleration.
iii. A body having zero velocity and non-zero acceleration.

Accepted Answer

The correct answer is: i & iii. Situation (i) is possible (e.g. decelerating vehicle moving East). Situation (iii) is possible (e.g. a ball at the top of its flight has zero velocity but non-zero gravitational acceleration). Situation (ii) is impossible because constant velocity implies acceleration must be strictly zero.

Question 11

Match the following:

*List-I*
i. kWh
ii. ampere
iii. volt
iv. watt

*List-II*
a. Electric Power.
b. Electric Energy.
c. Potential difference.
d. Electric Current.

Accepted Answer

The correct answer is: i-b, ii-d, iii-c, iv-a. The correct units are: kWh measures Electric Energy (i-b); Ampere measures Electric Current (ii-d); Volt measures Potential Difference (iii-c); Watt measures Electric Power (iv-a).

Question 12

A coulomb is same as

Accepted Answer

The correct answer is: Ampere second. Electric charge (Q) is current (I) multiplied by time (t). Therefore, 1 Coulomb = 1 Ampere × 1 Second.

Question 13

Arrange the following in the increasing chronological order of their occurrence:

i. Michael Faraday discovers electromagnetic induction.
ii. Benjamin Franklin proves lightning is electricity.
iii. Nicolas Tesla develops AC current
iv. Thomas Edison develops DC current

Accepted Answer

The correct answer is: ii, i, iv, iii. The chronological order is: Benjamin Franklin's lightning experiment (1752, ii) -> Michael Faraday discovers electromagnetic induction (1831, i) -> Thomas Edison develops DC (1882, iv) -> Nikola Tesla develops AC (1888, iii). Thus, the order is ii, i, iv, iii.

Question 14

Charge is distributed uniformly along a long straight wire. The electric field at 2cm from the wire is 20 newton/coulomb. The electric field at 4cm from the wire is:

Accepted Answer

The correct answer is: 10 newton/coulomb. For an infinite line charge, the electric field (E) is inversely proportional to distance (r) from the wire: E = λ / (2πε₀r). As distance doubles (from 2cm to 4cm), the electric field halves (from 20 N/C to 10 N/C).

Question 15

Match the following:

*List-I*
i. Biot-Savart Law
ii. Fleming's Left-hand rule
iii. Fleming's Right-hand rule
iv. Right hand thumb rule

*List-II*
a. Direction of induced current.
b. Direction of magnetic lines due to current.
c. Direction of force due to magnetic induction
d. Magnitude and direction of magnetic induction

Accepted Answer

The correct answer is: i-d, ii-c, iii-a, iv-b. The correct matches are: Biot-Savart Law gives magnitude/direction of magnetic induction (i-d); Fleming's Left-hand rule gives the direction of force on a current in a magnetic field (ii-c); Fleming's Right-hand rule gives the direction of induced current (iii-a); Right hand thumb rule gives the direction of magnetic lines (iv-b).

Question 16

If "r" is the distance of a moving charge, the magnitude of magnetic field produced by the charge is proportional to:

Accepted Answer

The correct answer is: 1/r². According to the Biot-Savart law, the magnetic field produced by a moving charge is inversely proportional to the square of the distance (r) from the charge (B ∝ 1/r²).

Question 17

Two electrons travelling with same speed. The magnetic field is zero at the mid-point between them. This means,

Accepted Answer

The correct answer is: They are travelling along parallel lines in the same direction.. By the right-hand rule, when two negative charges (electrons) travel at equal speed along parallel lines in the same direction, the magnetic fields they produce at the exact midpoint are equal in magnitude but opposite in direction, cancelling each other out to zero.

Question 18

According to Faraday's Law, an induced emf is proportional to

Accepted Answer

The correct answer is: The rate of change of magnetic flux. Faraday's Law of electromagnetic induction states that the induced electromotive force (emf) in a closed circuit is directly proportional to the time rate of change of magnetic flux through the circuit.

Question 19

What is the part of the microscope under the stage which focuses light on the specimen called?

Accepted Answer

The correct answer is: Condenser. The condenser is situated beneath the stage and functions to collect and focus light from the light source onto the specimen.

Question 20

The ability of an objective lens to resolve details into separate images instead of one blurred image is directly proportional to?

Accepted Answer

The correct answer is: Numerical Aperture. Resolution (R) is directly proportional to the Numerical Aperture (NA) of the objective lens: R = λ / (2 * NA).

Question 21

Which of the following microscopes gives a three-dimensional view of evidence?

Accepted Answer

The correct answer is: Stereomicroscope. A stereomicroscope (dissecting microscope) uses separate optical paths for each eye to provide a 3D view of the specimen.

Question 22

Which of the following microscopes are used to observe birefringent evidence like fibers?

Accepted Answer

The correct answer is: Polarizing light microscope. A polarizing light microscope utilizes polarized light to study the birefringent (optical refraction) properties of materials like fibers and minerals.

Question 23

Consider the following statements related to the microscope.

i. Two main types of illumination used in microscopy are Kohler and critical
ii. The lens closest to the specimen is called an ocular lens
iii. The lens closest to the eyes is called an objective lens
iv. The lens closest to the specimen is called an objective lens

Which of the statements are true/correct?

Accepted Answer

The correct answer is: i and iv only. Kohler and critical are indeed types of illumination (i). The lens closest to the specimen is the objective lens (iv), whereas the ocular lens (eyepiece) is closest to the eyes.

Question 24

Which of the following microscopes does a forensic scientist use to observe two different samples of evidence at the same time?

Accepted Answer

The correct answer is: Comparison microscope. A comparison microscope consists of two independent microscopes joined by an optical bridge, allowing side-by-side comparison of two specimens (e.g. bullets, hair).

Question 25

Which of the following microscopes gives the forensic scientist power to observe as well as plot the infrared absorption spectrum of the material?

Accepted Answer

The correct answer is: Microspectrophotometer. A microspectrophotometer combines a microscope with a spectrophotometer, allowing the analysis of light absorption (like UV-Vis or IR spectra) of microscopic samples.

Question 26

Laser is a type of light source which has the unique characteristics of

Accepted Answer

The correct answer is: All A, B and C. Laser light possesses high monochromaticity (single wavelength), directionality (narrow beam), and coherence/penetration power.

Question 27

Photochemical process includes

Accepted Answer

The correct answer is: All A, B and C. All listed processes are photochemical (driven by light absorption): photosynthesis in plants, vitamin D synthesis in skin, and photo-degradation of plastic polymers.

Question 28

Efficiency of column separation is

Accepted Answer

The correct answer is: Indirectly proportional to HETP. The efficiency of a chromatographic column (number of theoretical plates N) is inversely proportional to the Height Equivalent to a Theoretical Plate (HETP): N = L / HETP. Thus, smaller HETP means higher efficiency.

Question 29

When the velocity of the mobile phase is increased the transverse and longitudinal mobile diffusion?

Accepted Answer

The correct answer is: Decreases. According to the Van Deemter equation, longitudinal diffusion (B-term, which is B/u) decreases as the mobile phase velocity (u) increases, because the analyte spends less time diffusing along the column.

Question 30

Paper chromatography is an example of

Accepted Answer

The correct answer is: Partition chromatography. Paper chromatography is primarily partition chromatography, where the stationary phase is water molecules bound within the cellulose paper fibers, and the mobile phase is a solvent.

Question 31

In quantitative TLC radioactive material can be studied by

Accepted Answer

The correct answer is: Geiger counter. Radioactive zones on thin-layer chromatography (TLC) plates are detected and measured quantitatively using a Geiger counter or a radio-chromatogram scanner.

Question 32

The purpose of the sample introduction system in GC is

Accepted Answer

The correct answer is: All of the above. The inlet/injection system of a Gas Chromatograph introduces/injects the liquid sample (A), instantly vaporizes it (B), and mixes the vapor with the carrier gas stream (C).

Question 33

Which of the following is the disadvantage of nitrogen, which can be used as carrier gas in gas chromatography?

Accepted Answer

The correct answer is: Reduced Sensitivity. Nitrogen acts as a heavier carrier gas compared to Helium or Hydrogen, leading to reduced sensitivity or slower analysis speed in mass spectrometers and specific GC detectors.

Question 34

What is the full form for the ODS column used in HPLC?

Accepted Answer

The correct answer is: Octa Decyl Silane. The ODS column in HPLC stands for Octadecyl Silane (C18), which is the most widely used stationary phase for reversed-phase chromatography.

Question 35

Which of the following microscopes can have the maximum resolution

Accepted Answer

The correct answer is: Scanning Electron Microscope. A Scanning Electron Microscope (SEM) uses electrons instead of light, yielding resolutions up to 1-5 nm, which is far higher than optical microscopes.

Question 36

Morphine in acidic medium shows an max at

Accepted Answer

The correct answer is: 285nm. Morphine in an acidic aqueous solution (0.1 N HCl) exhibits a characteristic UV absorption maximum (lambda max) at approximately 285 nm (often shifting to ~298 nm in alkaline medium).

Question 37

Dragendorff's Reagent gives what colour in response to alkaloids on TLC

Accepted Answer

The correct answer is: Orange. Dragendorff's reagent (potassium bismuth iodide) yields bright orange-red or orange-brown spots when it reacts with alkaloids on a TLC plate.

Question 38

After reaching the resolution limit of a microscope, it can be continued to magnify an image but not improve its resolution-this is called as:

Accepted Answer

The correct answer is: Empty magnification. Empty magnification occurs when an image is enlarged further without revealing any new detail, because the resolution limit of the objective lens has already been reached.

Question 39

Michel Levy chart is referred in which of the following microscopy while examining birefringent evidence?

Accepted Answer

The correct answer is: Polarized light microscope. The Michel-Lévy interference color chart is used in polarized light microscopy to determine the birefringence of a specimen (like synthetic fibers or minerals) based on thickness and retardation.

Question 40

The Stereo microscope has a different optical path for each eye to view which gives rise to?

Accepted Answer

The correct answer is: 3-dimensional view of evidence sample. A stereomicroscope (dissecting microscope) provides two separate optical paths, presenting slightly different angles of the specimen to each eye, which produces a three-dimensional (3D) visual effect.

Question 41

What is the lens in a compound microscope closest to the specimen called?

Accepted Answer

The correct answer is: Objective lens. The lens closest to the specimen in a light or compound microscope is called the objective lens, which gathers light and focuses the image of the specimen.

Question 42

The UV or blue light is used to focus on evidence sample in which of the following microscopes?

Accepted Answer

The correct answer is: Fluorescence microscope. A fluorescence microscope uses high-intensity ultraviolet or blue excitation light to illuminate the specimen, exciting fluorescent dyes or autofluorescent components to emit lower-energy light.

Question 43

Which are the two types of electron microscopes used in forensic science laboratories?

Accepted Answer

The correct answer is: Scanning and transmission. The two main types of electron microscopes used in forensics are the Scanning Electron Microscope (SEM) for surface topography, and the Transmission Electron Microscope (TEM) for internal structural detail.

Question 44

Match the following:
i. Laws of Motion -> a. Velocity
ii. Scalar quantity -> b. Mass
iii. Linear Motion -> c. Displacement
iv. Vector quantity -> d. Moment of Inertia
v. Rotational Motion -> e. A body at rest remains at rest unless an external force is applied

Accepted Answer

The correct answer is: i-e, ii-b, iii-d, iv-a, v-c. Laws of motion correspond to Newton's first law (i-e). Mass is a scalar quantity (ii-b). Moment of inertia is related to rotational motion (v-d). Displacement is a vector quantity (iv-a / iii-c). In option D, this is structured as: i-e, ii-b, iii-d (linear motion linked to inertia/mass concept in paper), iv-a (vector is velocity/displacement), v-c.

Question 45

Which type of friction occurs when an object is in motion?

Accepted Answer

The correct answer is: Kinetic. Kinetic (or sliding) friction is the resistive force that acts between two solid surfaces that are moving relative to each other.

Question 46

What is the maximum velocity of a car of mass 100 kg can go round a level curve without skidding? (g=10m/s² µ between road and tyre = 0.6, Radius of curvature = 20m).

Accepted Answer

The correct answer is: 10 m/s. The maximum velocity without skidding on a level road is v_max = sqrt(μ * g * R). Substituting the values: v_max = sqrt(0.6 * 10 * 20) = sqrt(120) ≈ 10.95 m/s. The closest safe integer speed is 10 m/s (12 m/s exceeds the limit).

Question 47

What is the full-form of LASER?

Accepted Answer

The correct answer is: Light Amplification by Stimulated Emission of Radiation. LASER stands for Light Amplification by Stimulated Emission of Radiation, indicating that the light is amplified by forcing excited atoms to emit coherent photons.

Question 48

(A): Laser light is monochromatic
(B): Coherence in laser light refers to wavelength consistency

Accepted Answer

The correct answer is: Both (A) and (B) are correct. Both statements are correct. Laser light is monochromatic (consists of a single color/wavelength) and coherent (the light waves are in phase, maintaining spatial and temporal consistency).

Question 49

The brightness of a laser beam is a measure of its:

Accepted Answer

The correct answer is: Intensity. The extreme brightness or radiance of a laser beam is directly related to its high intensity (amount of optical power concentrated per unit area and solid angle).

Question 50

Match the following:
1. CO₂ lasers composed of -> a. Rare-earth ions
2. N₂ lasers operate in of EMR spectrum -> b. Visible region
3. Ar-ion laser emits light in of EMR spectrum -> c. Molecular gas
4. Glass lasers composed of -> d. Infra-Red region

Accepted Answer

The correct answer is: 1-c, 2-d, 3-b, 4-a. CO2 is a molecular gas laser (1-c). N2 laser operates in ultraviolet but is matched to infrared in paper options (2-d). Ar-ion laser emits visible blue-green light (3-b). Glass lasers are doped with rare-earth ions (4-a). This matches option A.

Question 51

YAG in YAG lasers stands for:

Accepted Answer

The correct answer is: Yttrium Aluminium Garnet. Nd:YAG lasers use Yttrium Aluminium Garnet (Y3Al5O12) crystal as the solid-state host medium, doped with neodymium ions.

Question 52

The beam width of a Gaussian beam is defined as the distance between points where the intensity drops to:

Accepted Answer

The correct answer is: 50%. In Gaussian beam analysis, the beam width can be defined at the Full Width at Half Maximum (FWHM), where the intensity drops to 50% of its peak value.

Question 53

Excimer lasers typically use a combination of:

Accepted Answer

The correct answer is: Noble gases and halogens. Excimer lasers (excited dimer lasers) use a mixture of a noble gas (such as Argon, Krypton, or Xenon) and a reactive halogen gas (Fluorine or Chlorine) to produce ultraviolet laser light.

Question 54

The HCl and HF lasers operate in the-

Accepted Answer

The correct answer is: IR region. Hydrogen Chloride (HCl) and Hydrogen Fluoride (HF) chemical lasers operate and emit light in the infrared (IR) region of the electromagnetic spectrum.

Question 55

Compared to traditional light sources, lasers typically have:

Accepted Answer

The correct answer is: Higher intensity, directionality and coherence. Lasers are distinguished from ordinary light sources by their high intensity, high directionality (low divergence), monochromaticity, and high coherence.

Question 56

Compared to traditional light sources, lasers generally have:

Accepted Answer

The correct answer is: Greater brightness. Due to the highly focused concentration of light energy, lasers possess a much greater brightness (radiance) compared to any traditional or thermal light sources.

Question 57

Which chromatography technique is known for its separation based on boiling point?

Accepted Answer

The correct answer is: GC (Gas Chromatography). Gas Chromatography (GC) separates volatile substances based on their boiling points and vapor pressure, along with partition coefficients between a gas mobile phase and a liquid/solid stationary phase.

Question 58

A carrier gas in GLC should have the following characteristics EXCEPT:

Accepted Answer

The correct answer is: It should be mixtures of gases. A carrier gas in Gas-Liquid Chromatography (GLC) must be a high-purity single gas (such as Helium, Nitrogen, or Hydrogen). It should not be a mixture of gases as this would destabilize the detector baseline and flow control.

Question 59

Following column packing materials are available in HPLC:

Accepted Answer

The correct answer is: All of the above. HPLC columns can utilize various packing materials: microporous particles (porous throughout), pellicular particles (solid core with porous outer layer), or chemically bonded phases (stationary phase covalently bound to silica). Therefore, all are available.

Question 60

The transition zone of Raman spectra is

Accepted Answer

The correct answer is: Between vibrational and rotational levels. Raman spectroscopy relies on inelastic scattering of light, which induces transitions within the rotational and vibrational energy levels of a molecule's ground electronic state.

Question 61

Which of the region of IR spectra appears between 1400-600 cm⁻¹?

Accepted Answer

The correct answer is: Fingerprint region. The region from 1400 cm⁻¹ to 600 cm⁻¹ in an infrared spectrum is called the fingerprint region. It contains complex, unique bending and rotational absorption bands specific to individual molecules.

Question 62

A detector that can be used in visible Spectrophotometry is

Accepted Answer

The correct answer is: Photovoltaic cell. A photovoltaic cell (or photodiode/photomultiplier tube) converts visible photons into an electrical current, making it a common optical detector in visible spectrophotometers.

Question 63

Bolometer is used as detector in

Accepted Answer

The correct answer is: I.R. Spectrophotometer. A bolometer is a highly sensitive thermal detector that measures the temperature rise caused by incident radiation. It is widely used in Infrared (IR) spectrophotometers.

Question 64

Which of the following is not a limitation of Beer Lambert's law, which gives the relation between absorption, thickness, and concentration?

Accepted Answer

The correct answer is: Radiation must have higher bandwidth. Beer-Lambert's law requires low concentration, monochromatic light, and neglects chemical associations/refractive shifts. Requiring a 'higher bandwidth' is not a limitation of the law; rather, using high-bandwidth (polychromatic) light causes deviations from the law.

⚛PhysicsScience

📝 All 150 QuestionsFree • No Login Required

The thrust on a rocket is in:

What causes the twinkling of stars?

The washing machine works on the principle of which of the following?

'Short-sight' in the human eye can be corrected by using a proper:

Consider the following pairs: - A. Power: Watts - B. Current: Volt - C. Frequency: Hertz - D. Resistance: Ampere Which of the above pairs are correctly matched?

Forces that act for a limited period of time are referred to as:

The Standard of Length is based on

Match the following: *List-I* i. Microns ii. Angstroms iii. Fermi iv. Kilometers *List-II* a. Distance between earth and moon. b. Inter atomic distance in a solid c. Size of nucleus. d. Wavelength of infrared laser.

A plane travelling north at 200m/s turns and then travels south at 200m/s. The change in its velocity is:

Which of the following situations are possible? i. A body having velocity east and acceleration west. ii. A body having constant velocity and variable acceleration. iii. A body having zero velocity and non-zero acceleration.

Match the following: *List-I* i. kWh ii. ampere iii. volt iv. watt *List-II* a. Electric Power. b. Electric Energy. c. Potential difference. d. Electric Current.

A coulomb is same as

Arrange the following in the increasing chronological order of their occurrence: i. Michael Faraday discovers electromagnetic induction. ii. Benjamin Franklin proves lightning is electricity. iii. Nicolas Tesla develops AC current iv. Thomas Edison develops DC current

Charge is distributed uniformly along a long straight wire. The electric field at 2cm from the wire is 20 newton/coulomb. The electric field at 4cm from the wire is:

If "r" is the distance of a moving charge, the magnitude of magnetic field produced by the charge is proportional to:

Two electrons travelling with same speed. The magnetic field is zero at the mid-point between them. This means,

According to Faraday's Law, an induced emf is proportional to

What is the part of the microscope under the stage which focuses light on the specimen called?

The ability of an objective lens to resolve details into separate images instead of one blurred image is directly proportional to?

Which of the following microscopes gives a three-dimensional view of evidence?

Which of the following microscopes are used to observe birefringent evidence like fibers?

Which of the following microscopes does a forensic scientist use to observe two different samples of evidence at the same time?

Which of the following microscopes gives the forensic scientist power to observe as well as plot the infrared absorption spectrum of the material?

Laser is a type of light source which has the unique characteristics of

Photochemical process includes

Efficiency of column separation is

When the velocity of the mobile phase is increased the transverse and longitudinal mobile diffusion?

Paper chromatography is an example of

In quantitative TLC radioactive material can be studied by

The purpose of the sample introduction system in GC is

Which of the following is the disadvantage of nitrogen, which can be used as carrier gas in gas chromatography?

What is the full form for the ODS column used in HPLC?

Which of the following microscopes can have the maximum resolution

Morphine in acidic medium shows an max at

Dragendorff's Reagent gives what colour in response to alkaloids on TLC

After reaching the resolution limit of a microscope, it can be continued to magnify an image but not improve its resolution-this is called as:

Michel Levy chart is referred in which of the following microscopy while examining birefringent evidence?

The Stereo microscope has a different optical path for each eye to view which gives rise to?

What is the lens in a compound microscope closest to the specimen called?

The UV or blue light is used to focus on evidence sample in which of the following microscopes?

Which are the two types of electron microscopes used in forensic science laboratories?

Match the following: i. Laws of Motion -> a. Velocity ii. Scalar quantity -> b. Mass iii. Linear Motion -> c. Displacement iv. Vector quantity -> d. Moment of Inertia v. Rotational Motion -> e. A body at rest remains at rest unless an external force is applied

Which type of friction occurs when an object is in motion?

What is the maximum velocity of a car of mass 100 kg can go round a level curve without skidding? (g=10m/s² µ between road and tyre = 0.6, Radius of curvature = 20m).

What is the full-form of LASER?

(A): Laser light is monochromatic (B): Coherence in laser light refers to wavelength consistency

The brightness of a laser beam is a measure of its:

Match the following: 1. CO₂ lasers composed of -> a. Rare-earth ions 2. N₂ lasers operate in of EMR spectrum -> b. Visible region 3. Ar-ion laser emits light in of EMR spectrum -> c. Molecular gas 4. Glass lasers composed of -> d. Infra-Red region

YAG in YAG lasers stands for:

The beam width of a Gaussian beam is defined as the distance between points where the intensity drops to:

Excimer lasers typically use a combination of:

The HCl and HF lasers operate in the-

Compared to traditional light sources, lasers typically have:

Compared to traditional light sources, lasers generally have:

Which chromatography technique is known for its separation based on boiling point?

A carrier gas in GLC should have the following characteristics EXCEPT:

Following column packing materials are available in HPLC:

The transition zone of Raman spectra is

Which of the region of IR spectra appears between 1400-600 cm⁻¹?

A detector that can be used in visible Spectrophotometry is

Bolometer is used as detector in

Which of the following is not a limitation of Beer Lambert's law, which gives the relation between absorption, thickness, and concentration?

Mass Spectrometry requires the sample to be in:

At what Amax does nitrate ion show absorbance with brucine sulphate

An FTIR instrument record a signal in the

Basic requirements of a monochromator are

Which of the following is not a source used in Mid Infrared Spectrophotometer?

All of the following are the Basic Principles of Light Microscopy EXCEPT:

In gas chromatography, the basis for separation of the components of the volatile material is the difference in

Which of the following statements is true for a refractive index detector in HPLC?

Theoretical plates are used to

An isocratic elution in HPLC is one in which the composition of the solvent

In normal phase HPLC, there is a

Headspace analysis is carried out in order to

Which of the following(s) is/are the advantage of HPLC over traditional LPLC (low-pressure liquid chromatography)?

Silylation is used in

Following detector in HPLC generates structural and molecular weight information about the eluted solute:

Universal column used in HPLC is?

Match the following: List-I i. Microns ii. Angstroms iii. Fermi iv. Kilometers List-II a. Distance between earth and moon. b. Inter atomic distance in a solid c. Size of nucleus. d. Wavelength of infrared laser.

Match the following: List-I i. kWh ii. ampere iii. volt iv. watt List-II a. Electric Power. b. Electric Energy. c. Potential difference. d. Electric Current.