Question 1 : Chloral is used in the manufacture of
1. none of these
2. parathion
3. BHC
4. DDT
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Question 2 : The process used for the manufacture of ethyl alcohol from molasses is
1. none of these
2. dehydrogenation
3. distillation
4. dehydration
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Question 3 : Vulcanisation of rubber
1. increases its oil & solvent resistance.
2. increases its ozone & oxygen reactivity.
3. decreases its tensile strength.
4. converts its plasticity into elasticity
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Question 4 : Raw materials for 'Solvay Process' for manufacture of the soda ash are
1. ammonia limestone and coke
2. ammonia, salt and limestone.
3. none of these.
4. salt, limestone and coke or gas.
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Question 5 : Lurgi coal gasifier is a pressurised __________ bed reactor.
1. moving
2. fluidised
3. entrained
4. fixed
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Question 6 : Paper grade bamboo contains about __________ percent cellulose.
1. 60
2. 5
3. 20
4. 40
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Question 7 : Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils
1. are prone to rancid oxidation.
2. cause cholesterol build up and blood clotting.
3. always contain some amount of nickel (as their complete removal is very difficult)
4. have affinity to retain harmful sulphur compounds.
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Question 8 : Carboxymethyl cellulose (CMC) is added in detergents to act as a/an
1. optical brightening agent
2. surfactant
3. anti soil redeposition agent
4. builder
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Question 9 : Which of the following has sodium bicarbonate as its main constituent ?
1. Baking soda
2. Washing soda
3. none of these
4. Baking powder
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Question 10 : The only commercial Fischer-Tropsch plant for producing liquid hydrocarbon fuel from coal is located at
1. Los-Angles (U.S.A.).
2. SASOL (in South Africa).
3. Redcar (U.K.)
4. Trombay (India)
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