Chemical Process MCQs

Question 1

Sucrose is a disaccharide consisting of

Accepted Answer

Glucose and fructose

Answer

Glucose and glucose

Answer

Glucose and galactose

Answer

Fructose and galactose

Question 2

__________ is an ore concentrating metallurgical process involving a chemical change.

Accepted Answer

Roasting

Answer

Electromagnetic separation

Answer

Froth floatation

Answer

None of these

Question 3

Hydrodenation of vegetable oils is a/an __________ reaction.

Accepted Answer

Exothermic

Answer

Endothermic

Answer

Autocatalytic

Answer

Homogenous

Question 4

Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about __________ percent.

Accepted Answer

< 10

Answer

75

Answer

> 30

Answer

50

Question 5

Average sulphur content in Indian pyrites is about __________ percent.

Accepted Answer

35

Answer

15

Answer

55

Answer

70

Question 6

Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C.

Accepted Answer

15-30

Answer

90-100

Answer

250-300

Answer

<0

Question 7

Pick out the wrong statement.

Accepted Answer

None of these

Answer

Kraft method of pulp manufacture can process all types of fibrous raw materials

Answer

Digestion time for bagasse is less than that for wood base materials

Answer

Both temperature and pressure in the digestor is less in case of the sulphite method as compared to that in the sulphate method

Question 8

Phthalic anhydride is produced by the oxidation of

Accepted Answer

Naphthalene

Answer

Benzene

Answer

Toluene

Answer

Aniline

Question 9

__________ process is used for producing soda ash.

Accepted Answer

Solvay

Answer

Chamber

Answer

Chance

Answer

Tromp