Engineering Chemistry I Mock Test 10

10%

Question 1 of 10

1. In ion-exchange process, the capital cost is _________ and the operational expenses are ______________

High, high

Low, high

High, low

Low, low

Question 1 of 10

Question 2 of 10

2. Biodegradable polymers do not need to be land-filled, they will re-enter normal geo-chemical cycles over time.

False

True

Question 2 of 10

Question 3 of 10

3. On increasing the temperature, the strength of adhesive ____________

Increases

Remain same

First increases than decreases

Decreases

Question 3 of 10

Question 4 of 10

4. Nylon-6, 6 have application in medicine and pharmacy because of ____________

Toughness

Sterilisability

Good hydrocarbon resistance

Elasticity

Question 4 of 10

Question 5 of 10

5. Which of the following ion get released from the anion exchange column?

Cl^-

SO₄^-2

OH^-

CO₃^-2

Question 5 of 10

Question 6 of 10

6. The catalyst used in the preparation of poly-siloxanes is ____________

Cumene hydroperoxide

Benzoyl peroxide

Lewis acid

Grignard reagent

Question 6 of 10

Question 7 of 10

7. Blends of terylene fibers with wool have better crease and wrinkle resistance, they are more durable, higher strength, do not shrink and are not attacked by moths.

False

True

Question 7 of 10

Question 8 of 10

8. Which of the following is used as reinforcement in advanced polymer matrix composite?

Carbon-fiber reinforced

Glass-fiber reinforced

Wood-fiber reinforced

Unidirectional-fiber reinforced

Question 8 of 10

Question 9 of 10

9. Which of the following is not a characteristic of glass-fiber reinforced composites?

Low impact resistance

Excellent chemical and corrosion resistance

Low density

High tensile strength

Question 9 of 10

Question 10 of 10

10. The exhausted cation exchange column is regenerated by passing a solution of ____________

Dil. NaCl

Conc. NaCl

Dil. HCl

Conc. HCl

Question 10 of 10