Engineering Chemistry I Mock Test 2

10%

Question 1 of 10

1. Why metallic bonds are non-directional?

Because there is a uniform distribution of mobile valence electrons around the kernels

There is no change in inter-kernel distance

There is a change in inter-kernel distance

Because there is a non-uniform distribution of mobile valence electrons around the kernels

Question 1 of 10

Question 2 of 10

2. All portland cements are hydraulic cement because they ___________

Set and harden in the absence of water

Do not harden after mixing water

None of the mentioned option

Set and harden in the presence of water

Question 2 of 10

Question 3 of 10

3. Reaction of (±) 2,3- dibromobutane is slower than meso in which the two methyl groups are ____________

Gauche

Skew

Partially eclipsed

Anti

Question 3 of 10

Question 4 of 10

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

100

Question 4 of 10

Question 5 of 10

5. The energy required to rotate n-butane molecule about the carbon-carbon bond is called ___________

Torsional energy

Enantiomeric energy

Potential energy

Rotational energy

Question 5 of 10

Question 6 of 10

6. Which compound imparts grey color, strength and hardness to the portland cement?

Magnesium oxide

Silica

Iron oxide

Alumina

Question 6 of 10

Question 7 of 10

7. The potential energy of n-butane is maximum for ___________

Gauche

Eclipsed conformations

Skew conformations

Staggered conformations

Question 7 of 10

Question 8 of 10

8. Which of the following possess lowest energy?

O₂

N₂

Question 8 of 10

Question 9 of 10

9. Which type of material expands and contract in response to an applied electric field?

Smart material

Biomaterial

Nanomaterial

Advanced material

Question 9 of 10

Question 10 of 10

10. Which of the following is not a necessary condition for the formation of intra-molecular hydrogen bonding?

There should be maximum strain during the ring closure

The ring should be planar

There should be minimum strain during the ring closure

A 5 or 6-membered ring should be formed

Question 10 of 10