Engineering Chemistry I Mock Test 4

10%

Question 1 of 10

1. Absorption spectrum results when an electron in an atom undergoes a transition from __________

Lower energy level to a higher one

Intermediate levels

Higher energy level to a lower one

All of the mentioned

Question 1 of 10

Question 2 of 10

2. The checking of purity of samples is the application of thin layer chromatography.

True

False

Question 2 of 10

Question 3 of 10

3. Select the incorrect statement from the following options.

Methane and argon have weak dispersion forces so their boiling point is low

Water and ethanol have strong hydrogen bonding and hence they possess high boiling point

Mercury has weak metallic bonding which is responsible for its low boiling point

Diethyl ether has a dipole moment, and the dipole-dipole forces accounts for its moderately high boiling point

Question 3 of 10

Question 4 of 10

4. Which of the following is the application of ion exchange chromatography?

All of the mentioned

The separation and determination of anions

The demineralisation of water

The softening of hard water

Question 4 of 10

Question 5 of 10

5. The viscosity of a fluid is inversely proportional to the __________

Velocity difference between two adjacent layers

Area of contact of two adjacent layers

Distance between two adjacent layers

None of the mentioned

Question 5 of 10

Question 6 of 10

6. Spectroscopy deals with the transition that a molecule undergoes on the absorption of suitable radiations determined by quantum mechanical selection rules.

True

False

Question 6 of 10

Question 7 of 10

7. What are the uses of partition chromatography?

Separation of amino acids

Separation of sugar derivatives

Analysis of closely related aliphatic alcohols

All of the mentioned

Question 7 of 10

Question 8 of 10

8. Which of the following is not an application of high performance liquid chromatography?

Analysis of proteins, drugs and explosives

Elimination of undesirable substances from blood

Separation of lipids, fatty acids and steroids

Separation of pharmaceutical drugs

Question 8 of 10

Question 9 of 10

9. The reciprocal of conductivity is ____________

None of the mentioned

Viscosity

Resistivity

Turbidity

Question 9 of 10

Question 10 of 10

10. The region of electromagnetic spectrum for nuclear magnetic resonance is __________

Infrared

UV-rays

Radio frequency

Microwave

Question 10 of 10