Engineering Chemistry I Practice Test 2

1. In gauche conformations, the methyl groups are ___________

90⁰ apart

180⁰ apart

60⁰ apart

360⁰ apart

2. The relative instability of any of the intermediate skew conformations is due to ___________

Longitudinal strain

Lateral strain

Shear strain

Torsional strain

3. Optical fibre can be safely used for signal transmission near the nuclear installation because ___________

There is no electromagnetic interference

Plastic cladded silica fibres are not resistant to nuclear radiations

Plastic cladded silica fibres are resistant to nuclear radiations

There is no leakage of signals

4. Both anti and gauche conformations are free of torsional strain.

True

False

5. From where does the inter-molecular interaction originate?

None of the mentioned

From the electric properties of atoms

From the cohesive properties of atoms

From the magnetic properties of atoms

6. Which of the following is not a state of aggregation of matter?

Plasma

None of the mentioned

Solid

Liquid and Gas

7. The amplification factor for transistor when used as an amplifier will be ___________

100

8. The sufficient condition for showing optical activity is _______________

Chirality of molecule as a whole only

Molecule should have measurable amount of optical activity only

Polarimeter should have capacity of recording low-degree optical activity only

Both, the molecule should have measurable amount of optical activity and polarimeter should have capacity of recording low-degree optical activity

9. Which of the following is not an aerospace material?

Plastics

Polymers

Aluminium alloys

Silica

10. Select the incorrect statement from the following option.

It possess excellent corrosion resistant

It has a shape memory strain of about 8.5%

It has lower ductility than other shape memory alloys like Au-Cd

Nitinol is a non-magnetic material