CPI

Question 1

__________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia.

Answer 1

Ostwald’s

Question 2

The catalyst used in shift converter is

Answer 2

nickel

Question 3

DDT stands for

Answer 3

dichloro-diphenyl-trichloroethane

Question 4

Bleaching action of bleaching powder is due to its __________ properties.

Answer 4

oxidising

Question 5

Which of the following is not required in the manufacture of soda ash by Solvay process ?

Answer 5

Nitric acid

Question 6

The purpose of tanning in leather industry is to

Answer 6

stiffen the leather

Question 7

Main constituent of dolomite is

Answer 7

MgCO3

Question 8

Conversion of CO to CO2 by steam in presence of a catalyst is called

Answer 8

shift conversion

Question 9

Portland cement consists mainly of

Answer 9

CaO & SiO2

Question 10

Cumene (isopropyl benzene) is made by

Answer 10

propylene alkylation of benzene.

Question 11

Mannheim furnace is used in the manufacture of

Answer 11

hydrochloric acid

Question 12

Thermosetting materials

Answer 12

are cross-linked molecules

Question 13

Nickel is not used as a catalyst in the

Answer 13

Ostwald’s process of HNO3 manufacture.

Question 14

__________ iron is the purest form of iron.

Answer 14

Wrought

Question 15

Alcohol is produced by the

Answer 15

hydrolysis of an ether

Question 16

Sulphur removal by heating of pyrite ore in presence of air is called its

Answer 16

roasting

Question 17

Pick out the true statement pertaining to water treatment.

Answer 17

Normally, the turbidity is removed by adding a coagulent prior to sedimentation.

Question 18

ransportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of

Answer 18

nitric acid

Question 19

The most stable allotropic form of phosphorous is the __________ phosphorous.

Answer 19

black

Question 20

Function of thinner in a paint is to

Answer 20

suspend pigments & dissolve film forming materials

Question 21

Rancidity of the fatty oil can be reduced by its

Answer 21

hydrogenation

Question 22

Phenol formaldehyde

Answer 22

employs condensation polymerisation

Question 23

Shrinkage volume in cement setting does not depend upon the

Answer 23

sand to cement ratio

Question 24

A mineral is termed as ‘ore’, if

Answer 24

a metal can be economically extracted from it

Question 25

Inversion of sucrose produces

Answer 25

glucose

Question 26

Ore concentration by froth floatation utilises the __________ of ore particles.

Answer 26

wetting characteristics

Question 27

The most commonly used substance to speed up the sedimentation of sewage is

Answer 27

lime

Question 28

Wine, rum & Vodka are prepared by the formulation of

Answer 28

Wine - fruit juice Rum - sugar beet Vodka - rye

Question 29

The manufacture of Kraft pulp is done by a/an __________ process.

Answer 29

alkaline

Question 30

Industrial production of chloroform requires acetone and

Answer 30

calcium hypochlorite

Question 31

Styrene (a monomer for the production of polystyrene) is commercially produced by

Answer 31

catalytic dehydrogenation of ethyl benzene.

Question 32

Hydrogenation of oil takes place in a/an __________ reactor.

Answer 32

trickle bed

Question 33

Fatty material used in soap making is

Answer 33

tallow

Question 34

Favourable conditions for the liquefaction of gases in general are

Answer 34

high pressure & low temperature.

Question 35

__________ nature of hypo (sodium thiosulphate) makes it useful in photography.

Answer 35

Complex forming

Question 36

__________ is an ore of lead.

Answer 36

Galena

Question 37

Which of the following is an yellow pigment ?

Answer 37

Lead chromates

Question 38

Catalytic oxidation of toluene produces

Answer 38

phenol

Question 39

SO2 is bubbled through hot sugar cane juice to

Answer 39

act as an acidifying agent.

Question 40

An industrial process for making hydrazine from ammonia and hypochlorite ion in aqeous solution.

Answer 40

Raschig Process

Question 41

A process used in paper production in which sulfur dioxide is added to a mildly acidic digestion liquor to yield hydrogen sulfite ions.

Answer 41

Sulfite process

Question 42

In Kraft process of paper manufacture, while cooking liquor consists of caustic soda

Answer 42

Sodium sulfide, sodium carbonate

Question 43

Epsom Salt

Answer 43

Magnesium Sulfate

Question 44

Which of the following is also known as black diamond

Answer 44

Carbonado