Chemical Engineering - Chemical Process

46. 

Drinking (potable) water treatment does not involve

A. coagulation
B. sedimentation
C. softening
D. disinfection

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

47. 

Phenol formaldehyde resin is used as an adhesive in making

A. laminates
B. card boxes
C. furniture
D. books

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

48. 

Pick out the correct statement.

A. A fat is converted into oil by its hydrogenation.
B. There is no difference between a fat and an oil so far as its physical properties are concerned.
C. All vegetable oils except coconut oil, contains fatty acids having more than sixteen carbon atoms.
D. Vegetable oils are classified as drying, non-drying and semi drying oils depending upon their fatty acids content.

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

49. 

DDT should not be allowed to come in contact with iron (during its manufacture) to

A. avoid its decomposition.
B. prevent sulphonation of the monochlorobenzene by the acid catalyst.
C. achieve non-hygroscopic property.
D. none of these.

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

50. 

Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively

A. V2O5 & Cr2O3.
B. oxides of nitrogen & Cr2O3.
C. V2O5 on a porous carrier & oxides of nitrogen.
D. oxides of nitrogen & V2O5 on a porous carrier.

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

« Prev   1 2 3 4 5 6 7 8 9 10