Engineering Chemistry II Mock Test 7

10%

Question 1 of 10

1. Electrodialysis is an electrically driven separation conducted at a very low pressure-driven, size-exclusion filtering process.

True

False

Question 1 of 10

Question 2 of 10

2. In electrodialysis cell, the pressure is about ___________

2 kg/m²

10 kg/m²

3 kg/m²

5-6 kg/m²

Question 2 of 10

Question 3 of 10

3. What is the function of coagulant?

It helps in the formation of fine precipitate

It helps in increasing the solubility

It helps in increasing the boiling point

It helps in the formation of coarse precipitate

Question 3 of 10

Question 4 of 10

4. The scales decrease the efficiency of boiler and chances of explosions are also there.

False

True

Question 4 of 10

Question 5 of 10

5. The residual hardness in lime-soda process is ___________

15-50 ppm

0-2 ppm

50-70 ppm

5-15 ppm

Question 5 of 10

Question 6 of 10

6. Which of the following is the second step for calculating the amount of lime and soda?

Identification of lime and soda for different salts

Calculation of CaCO₃ equivalents

Calculation of soda requirements

Calculation of lime requirements

Question 6 of 10

Question 7 of 10

7. The chemical formula of zeolite is ___________

Na₂Al₂O

Al₂(SO₄)₃.18 H₂O

Na₂O.Al₂O₃.xSiO₂.yH₂O

FeSO₄.7H₂O

Question 7 of 10

Question 8 of 10

8. Select the incorrect statement about reverse osmosis from the following option.

It operates at a comparatively high temperature

It is relatively energy efficient

The life of an SPM is about 2 years and it can be easily replaced within a few minutes

It is simple and reliable process

Question 8 of 10

Question 9 of 10

9. Salt cannot be separated from brackish water by freezing.

False

True

Question 9 of 10

Question 10 of 10

10. Synthetic zeolites possess a higher exchange capacity per unit weight compared to natural zeolites.

True

False

Question 10 of 10