Chemical Process MCQs

Question 1

L.D. converter is used in the production of

Accepted Answer

Steel

Answer

Pig iron

Answer

Copper

Answer

Zinc

Question 2

90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at __________ °C.

Accepted Answer

10 - 30

Answer

-5

Answer

250 - 280

Answer

500 - 600

Question 3

Setting of plaster of paris is accompanied with

Accepted Answer

Hydration

Answer

Dehydration

Answer

Hydrolysis

Answer

Loss of CO2

Question 4

With increase in temperature, the equilibrium constant at constant pressure (Kp) for oxidation of sulphur dioxide

Accepted Answer

Decreases

Answer

Increases

Answer

Increases linearly

Answer

Decreases linearly

Question 5

Hydrazine is used in water treatment for the removal of

Accepted Answer

Dissolved oxygen

Answer

Colloidal impurities

Answer

Turbidity

Answer

Chlorinous taste

Question 6

Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.

Accepted Answer

30 to 50

Answer

-5 to 0

Answer

5 to 10

Answer

75 to 80

Question 7

Chloramines are used in water treatment for

Accepted Answer

Disinfection and control of taste & odour

Answer

Corrosion control

Answer

Removing turbidity

Answer

Control of bacteria

Question 8

Pick out the endothermic reaction out of the following.

Accepted Answer

CaCO3 = CaO + CO2

Answer

C + $$\frac{1}{2}$$O2 = CO

Answer

CO + 3H2 = CH4 + H2O

Answer

CO + $$\frac{1}{2}$$O2 = CO2

Question 9

Pick out the exothermic reaction out of the following:

Accepted Answer

CaC2 + H2O = Ca(OH)2 + C2H2

Answer

C + H2O = CO + H2

Answer

MgCO3 = MgO + CO2

Answer

All of the above