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Quiz 1

Total questions: 94

Worksheet time: 2hrs 32mins

Name
Class
Date
1.

Far UV radiation region extends from ___________ .

a)

10 nm to 200 nm

b)

100 nm to 200 nm

c)

50 nm to 200 nm

d)

150 nm to 200 nm

2.

How many electronic transitions are possible in UV-Visible spectroscopy?

a)

3

b)

4

c)

5

d)

6

3.

Which transition requires higher energy?

a)

sigma to sigma *

b)

pi to pi*

c)

n to sigma*

d)

n to pi*

4.

Which transition requires low energy?

a)

sigma to sigma *

b)

pi to pi*

c)

n to sigma*

d)

n to pi*

5.

What is the absorption maximum value of 1,3-butadiene?

a)

215 nm

b)

216 nm

c)

217 nm

d)

219 nm

6.

When a molecule absorbs energy in the UV or Visible region _____________transition takes place?

a)

Vibrational

b)

Rotational

c)

Electronic

d)

Vibrational-rotational

7.

Which among the following impart colour to the organic compound?

a)

Auxochrome

b)

Chromophore

c)

Chromone

d)

Auxochromone

8.

Light is an ________________ .

a)

Electric radiation

b)

Magnetic radiation

c)

Electrochromic radiation

d)

Electromagnetic radiation

9.

UV-Visible region is ____________ .

a)

100-900 nm

b)

200-500 nm

c)

100-800 nm

d)

200-800 nm

10.

Light Sources are required to emit spectra should have _________________ .

a)

Sharp Lines

b)

Negligible Background

c)

High Stability

d)

All

11.

A wave with a large wavelength will have a ______ frequency and _____ energy

a)

high, low

b)

high, high

c)

low, high

d)

low, low

12.

Which has the LONGEST wavelength and, therefore, the lowest frequency/energy

a)

Gamma Rays

b)

Radio Waves

c)

Visible Light

d)

Infrared rays

13.

Which has the SHORTEST wavelength and, therefore, the highest frequency/most energy

a)

Radio waves

b)

Ultraviolet Rays

c)

Gamma Rays

d)

X-rays

14.

Which section of the spectrum is the ONLY one we can see?

a)

X-rays

b)

Visible Light

c)

Gamma Rays

d)

Ultraviolet Rays

15.

As the frequency of an electromagnetic wave increases, the amount of energy in that wave...

a)

increases.

b)

decreases.

c)

stays the same.

16.

The height of the wave is known as the _____________.

a)

amplitude

b)

crest

c)

trough

d)

wavelength

17.

The blue section of the wave is measuring _________________.

a)

wavelength

b)

crest

c)

trough

d)

amplitude

18.

Light behaves like both a particle and a ______.

a)

Mass

b)

Wave

c)

Current

19.

Which of the following has the shortest wavelength?

a)

microwaves

b)

UV rays

c)

Infrared

d)

the color blue

20.

Which of the following has the most energy?

a)

Red

b)

Blue

c)

Green

d)

Violet

21.

Waves are a transfer of what?

a)

Heat

b)

Light

c)

Energy

d)

Food

22.

The units for frequency are measured in _____________.

a)

hertz

b)

seconds

c)

m/s

d)

m

23.

What does the picture below illustrate?

a)

Visible Light Spectrum

b)

Electromagnetic Spectrum

c)

Frequency Indicator

d)

Color Line

24.

What is the saying that can help you remember the order of the visible spectrum?

a)

ROYGBIV

b)

RYOBIVG

c)

ROYBVIG

d)

RIBYOVG

25.

How are we able to see the color white?

a)

All colors except red are absorbed

b)

All colors are absorbed

c)

All colors are reflected

d)

All colors except red are reflected

26.

Of the visible spectrum, what color has the longest wavelength?

a)

Blue

b)

Green

c)

Yellow

d)

Red

e)

Violet

27.

Light is a type of energy that travels as an ______________ ____________.

a)

Longitudinal Wave

b)

Electric Current

c)

Electromagnetic Wave

d)

Magnetic Wave

28.

When talking about energy levels in an atom, what is an "excited state"?

a)

The highest energy state of an atom

b)

Any level higher than the ground state

c)

The lowest energy state of an atom

d)

When an atom loses an electron

29.

___________ is a form of energy that we can see with our eyes.

a)

Radio Waves

b)

Visible Light

c)

Ultraviolet

d)

Reflection

30.

You want to measure the absorbance of a DNA sample. What type of spectrophotometer would you use?

a)

UV spectrophotometer

b)

Visible light spectrophotemeter

c)

MRI

d)

Mass spectrometer

31.

Objects appear to be different colors to our eyes because we see:

a)

Light that is reflected by the object

b)

Light that is absorbed by the object

c)

Infrared light

d)

Ultraviolet light

32.

When preparing a blank, how do you choose the correct liquid?

a)

Use the same liquid that is mixed with your substance of interest

b)

Use ethanol for proteins and water for starches.

c)

Use distilled water whenever possible.

d)

Use methanol whenever it is available.

33.

If a substance is colored when you observe it, what type of spectrophotometer will you most likely use?

a)

UV spectrophotometer

b)

Visible light spectrophotometer

c)

MRI

d)

Mass spectrometer

34.

Optimally, where should your unknown concentrations fall in your standard curve?

a)

Close the midpoint between your know concentrations.

b)

To the right of your highest data point.

c)

To the left of your lowest data point.

d)

When possible, above the line of best fit.

35.

The amount of light absorbed by a sample is called its:

a)

Absorbance

b)

Transmittance

c)

Hue

d)

Saturation

36.

The amount of light that passes through a sample is called:

a)

Radiation

b)

Transmittance

c)

Absorbance

d)

Quantum force

37.

The transition of electrons from a triplet state to a singlet state is known as...

a)

Phosphorescence

b)

Fluorescence

c)

Quenching

d)

Congelation

38.

Which state of electron possesses highest stability?

a)

Ground State

b)

Triplet State

c)

Singlet Excited State

d)

All

39.

Which state of electrons are in pair but opposite spin?

a)

Singlet Ground State

b)

Singlet Excited State

c)

Both

d)

None

40.

The purpose of a secondary filter in fluorescence spectroscopy is.....

a)

Allows only excitation radiation

b)

Allows only emission radiation

c)

Allows both type of radiations

d)

Allows transitted radiation

41.

The fluorescence intensity increases with all of the following except....

a)

Rigidity

b)

Planarity

c)

Number of Rings

d)

Dissolved Oxygen

42.

The most widely used detector in spectrofluorometer is....

a)

Barrier layer

b)

Golay cell

c)

Bolometer

d)

PMT

43.

Fluorescence is a result of transition of electron from

a)

Singlet ground state to singlet excited state

b)

Singlet excited state to singlet ground state

c)

Triplet excited state to singlet ground state

d)

Triplet ground state to singlet excited state

44.

A prism can be used to...

a)

Separate visible light into colors

b)

Make a beam of light brighter

c)

Measure the speed of light

d)

Make UV light visible

45.

What happens when light transitions into a new medium?

a)

Reflection

b)

Absorbing

c)

Refraction

d)

Mirror

46.

Where is visible light used in?

a)

Light Bulbs, TVs, Lasers

b)

Nothing, Visible light cannot be used

c)

Sound

d)

When we Breathe

47.

What part of the atom or molecule does infrared radiation affect

a)

Nucleus

b)

Electrons

c)

Bonds

d)

Charge

48.

The independent variable on an IR spectra is

a)

Wavelength 

b)

Wavenumber

c)

Frequency squared

d)

Transmission

49.

The dependent variable on an IR spectra is

a)

Wavelength 

b)

Wavenumber

c)

Frequency

d)

Transmission

50.

The greater the polarity of a bond the_______________its IR absorption

a)

Weaker

b)

Stronger

c)

More charged

d)

Smaller the wavenumber

51.

Non polar symmetrical molecules

a)

Do not absorb IR radiation

b)

Absorb IR  radiation

c)

Absorb the most IR  radiation

d)

Transmit IR radiation

52.

The finger print region is 

a)

Different for each organic compound

b)

from 600 - 1400 cm-1

c)

Both

d)

None

53.

Stronger bonds absorb  IR at

a)

Higher wavenumbers

b)

Lower wavenumbers

c)

In the finger print region

d)

600cm-1

54.

Which of the following molecular vibrations, one atom move above the plane and another atom move below the plane ?

a)

Rocking

b)

Scissoring

c)

Wagging

d)

Twisting

55.

In which sample handling technique the solid sample is pressed under high pressure?

a)

Solid run in solution

b)

Solid Film

c)

Mull technique

d)

Pressed Pellet technique

56.

Which of the following is not used as a IR radiation sources?

a)

Incandescent Lamp

b)

Deuterium Lamp

c)

Nernst Glower

d)

Mercury Arc

57.

Nernst Glowar is composed of Zirconium oxide, Yuttrium oxide, and Erbium oxide in a ratio of...

a)

92: 6: 2

b)

93: 5: 2

c)

90: 7: 3

d)

91: 6: 3

58.

Which detector of IR is similar to Wheatstone Bridge

a)

Bolometer

b)

Thermocouple

c)

Thermistors

d)

Golay Cells

59.

Which detectors of IR are connected with each other with two dissimilar wire?

a)

Bolometer

b)

Thermocouple

c)

Thermistor

d)

Golay Cells

60.

Which Detector of IR contains Diaphragm and inert gas?

a)

Bolometer

b)

Thermocouple

c)

Thermistor

d)

Golay Cells

61.

Which of the following is disadvantage of FT-IR?

a)

Speed

b)

Sensitivity

c)

Sample Constraint

d)

Internally Calibrated

62.

In which mode the IR spectrum is represented commonly?

a)

Adsorption

b)

Transmission

c)

Absorption

d)

Scattering

63.

Flame Photometry is also known as...

a)

Flame Emission Spectroscopy

b)

Flame Excitation Spectroscopy

c)

Flame Absorption Spectroscopy

d)

Flame Adsorption Spectroscopy

64.

Which of the following element is able to measure through the Flame Photometry?

a)

Boron

b)

Strontium

c)

Arsenic

d)

Sulphur

65.

Which if the following is the characteristic wavelength of Potassium?

a)

589

b)

662

c)

766

d)

554

66.

In Flame Photometry which color is obtained in flame due to the presence of calcium?

a)

Red

b)

Blue

c)

Orange

d)

Green

67.

In Flame Photometry which color is obtained in flame due to the presence of barium?

a)

Lime Green

b)

Violet

c)

Orange

d)

Red

68.

In Flame Photometry color is obtained in flame due to the presence of lithium?

a)

Orange

b)

Lime green

c)

Violet

d)

Red

69.

In Flame Photometry Burners, Aspiration completely is the advantage of which burner?

a)

Premix Burner

b)

Total Consumption Burner

c)

Mecker Burner

d)

All

70.

Oxidant, Fuel gas and Sample solution are mixed in which type of burner?

a)

Premix Burner

b)

Mecker Burner

c)

Total Consumption Burner

d)

All

71.

When Acetylene and Nitrogen are used for flame in flame photometry the flame temperature reached up to...

a)

2100

b)

2800

c)

3000

d)

1900

72.

Which of the following is not the comes under the Chemical Interferences?

a)

Ionization Interferences

b)

Cation - Anion Interferences

c)

Cation - Anion Interferences

d)

Spectral Interferences

73.

Atomic Absorption Spectroscopy developed in the year...

a)

1952

b)

1953

c)

1949

d)

1950

74.

AAS developed by which scientist?

a)

M. Twesst

b)

Alan Walsh

c)

Thomas Edition

d)

Petrick

75.

In AAS if we want to identify the sodium in the flame then which hollow cathode lamp is used?

a)

Sodium

b)

Potassium

c)

Sodium-Chloride

d)

Potassium-Chloride

76.

Which of the following Interferences does not come under the Non-spectral Interferences in AAS?

a)

Chemical Interferences

b)

Ionization Interferences

c)

Matrix Interferences

d)

Spectral Interferences

77.

Oxygen as oxidant and Natural gas as fuel gas is used in AAS then flame temperature reaches upto

a)

2550-2700

b)

2700-2800

c)

3050-3150

d)

1700-1900

78.

AAS can be used for both Qualitative and Quantitative Analysis

a)

False

b)

True

79.

AAS can be used for analysis of blood and serum

a)

True

b)

False

80.

AAS can be used to determine lead in petrol

a)

False

b)

True

81.

AAS can be used for nail analysis for heavy metal poisoning

a)

True

b)

False

82.

Which of the following phenomena occurs in the Nepheloturbidometry?

a)

Transmittance

b)

Sacttering

c)

Both

d)

Absorption

83.

In turbidimeters the detector are placed at which angle

a)

135

b)

180

c)

145

d)

90

84.

In nephelometer, the detectors are placed at which angle?

a)

90

b)

135

c)

145

d)

90 & 135

85.

Scattering is symmetric in which type of particles?

a)

Small Sized Particle

b)

Medium Sized Particle

c)

Large Sized Particle

d)

Larger Sized Particle

86.

Unsymmetrical Scattering occurs in which sized Particles?

a)

Large Particle

b)

Small Particle

c)

Larger Particle

d)

Large and Larger Particles

87.

Nepheloturbimeter is used for which type of chemical constituent estimation in Rubber

a)

Carbon 

b)

Oxygen

c)

Sulphur

d)

Sodium

88.

What is Red Shift?

a)

The shifting of absorption to a shorter wavelength

b)

The shifting of absorption to a higher wavelength

c)

The shifting of absorption towards the blue end of the spectrum

d)

The shifting of absorption to lower energy

89.

The effect which involves a decrease in the intensity of absorption called as ________________ .

a)

Bathochromic Shift

b)

Hyperchromic Shift

c)

Hypochromic Shift

d)

Hypsochromic Shift

90.

A continuous change in the interatomic distance along the axis of a bond between two atoms are known as ___________ .

a)

Bending

b)

Streching

c)

In-plane

d)

Out-plane

91.

Which of the following chemical effects can cause errors in absorbance measurements?

a)

Association

b)

Dissociation

c)

Solute-solvent Effect

d)

All

92.

Continuous changes in the angle between two bonds are known as __________ .

a)

Rotation

b)

Streching

c)

Symmetric

d)

Bending

93.

Which of the following elements cannot be detected with the help of Electron Discharge lamp?

a)

Arsenic

b)

Cadmium

c)

Antimony

d)

Potassium

94.

Which of the following the is Far IR Region

a)

0.78 – 2.5 μm

b)

2.5 – 5.0 μm

c)

50 – 1000 μm

d)

None

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