Chemical Engineering - Chemical Process

11. 

Main use of liquid nitrogen is in

A. rocket propulsion.
B. making gun powder.
C. detergent manufacture.
D. refrigerative cooling.

Answer: Option D

Explanation:

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12. 

Comparing sulphate process with sulphite process, we find that __________ in the later.

A. both temperature & pressure in the former is less than that
B. both temperature & pressure in the former is more than that
C. temperature is more in the former whereas pressure is more
D. pressure is more in the former whereas temperature is less

Answer: Option B

Explanation:

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13. 

Which of the following is a disacchride ?

A. Sucrose
B. Glucose
C. Starch
D. Maltose

Answer: Option A

Explanation:

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14. 

Proximate analysis of coal determines its __________ content.

A. moisture, ash, sulphur & volatile matter
B. moisture & volatile matter
C. moisture, sulphur, nitrogen & fixed carbon
D. none of these

Answer: Option B

Explanation:

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15. 

Pick out the exothermic reaction out of the following:

A. C + H2O = CO + H2
B. CaC2 + H2O = Ca(OH)2 + C2H2
C. MgCO3 = MgO + CO2
D. all (a), (b) and (c)

Answer: Option B

Explanation:

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