Engineering Chemistry I Mock Test 7

10%

Question 1 of 10

1. How does half life period of a first order reaction vary with temperature?

It decreases

Both increases as well as decrease

It increases

It remains the same

Question 1 of 10

Question 2 of 10

2. Calculate the degree of freedom for the following reaction.
N₂O₄ (Gas) ⟶ 2NO₂ (Gas)

Question 2 of 10

Question 3 of 10

3. With reference to a two component system, an isobar indicates _______

A region where the temperature remains constant

An area above which only the liquid vapors remains

A region where the composition lies in equilibrium

An area below phase end products remains

Question 3 of 10

Question 4 of 10

4. If the following conditions result in the formation of a regular solution?

Ω = 10

Ω < 0

Ω = 0

Ω > 0

Question 4 of 10

Question 5 of 10

5. Calculate the degree of freedom for decomposition of potassium permanganate.

Question 5 of 10

Question 6 of 10

6. Which of the following statement is incorrect about the adsorption theory?

Enhanced activity of a rough surfaced catalyst is explained

The catalyst is more efficient in finely divided state

Action of promoters is not explained

Specific action of catalyst is explained

Question 6 of 10

Question 7 of 10

7. The factor which determines the activity of a heterogeneous catalyst is ___________

Method of preparation, prior treatment only

The number of active sites per unit amount of catalyst only

Total surface area, number of active sites and method of preparation

Total surface area only

Question 7 of 10

Question 8 of 10

8. Calculate the eutectic concentration given the following data.
Pressure= 1atm
Temperature: 1^oC

Question 8 of 10

Question 9 of 10

9. Which of the following is not responsible for phase deposition?

Grain size

Container wall

Stacking effect

Disjoints

Question 9 of 10

Question 10 of 10

10. Which of the following statements is incorrect about the triple point?

The system must be closed so that no vapor can escape

The point at which the solid, liquid and gaseous phases for a substance co-exist

The triple point exists at a single temperature and is not related with pressure

The triple point exists for a substance at a specific temperature and pressure

Question 10 of 10