Engineering Chemistry I Practice Test 4

1. 1 poise = ___________

100 N sm^-2

1/100 N sm^-2

1/10 N sm^-2

10 N sm^-2

2. Which of the following is not done using column chromatography?

Separation of inorganic cations or complexes

Separation of geometric isomers

The determination of homogeneity of chemical substances

The identification of unknown compounds

3. The internationally recommended unit for conductance is ____________

Ohm

Dyne

Siemens

Poise

4. Select the incorrect statement from the following option.

Every pure solid crystalline substance has a characteristic and unique melting point

Impure sample of substance has different melting point

Two different pure substances have same melting points

Melting point serves as the criteria of purity of a solid substance

5. The minimum size of particle which can be separated through sieve analysis is ____________

20 microns

75 microns

44 microns

100 microns

6. The absolute kinematic viscosity is the ratio of __________

Kinetic energy to absolute viscosity

Density to absolute viscosity

Absolute viscosity to kinetic energy

Absolute viscosity to density

7. The total surface area covered by all the molecules of the adsorbed gas is given by ____________

S = N_A/nβ

S = nβ/N_A

S = βN_A/n

S = nβN_A

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

UV-rays

Microwave

Radio frequency

Infrared

9. The energy required to vaporize 1 mole of a liquid is known as ____________

Molar heat of boiling

Molar heat of fusion

Molar heat of vaporisation

Molar heat of freezing

10. The Newton’s law of viscosity is not applicable to __________

Turbulent flow

Streamline flow

All of the mentioned

Laminar flow