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question_answer1)
The enzyme involved in the oxidation of ethanol to form vinegar is
A)
zymase done
clear
B)
oxidase done
clear
C)
acetobacter done
clear
D)
invertase done
clear
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question_answer2)
The main constituent of Vinegar is: [NDA]
A)
Acetic acid done
clear
B)
Ascorbic acid done
clear
C)
Citric acid done
clear
D)
Tartaric acid done
clear
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question_answer3)
Soaps are sodium salts of fatty acids. Which of the following tatty acid does not form soap?
A)
Butyric acid done
clear
B)
Oleic acid done
clear
C)
Palmitic acid done
clear
D)
Stearic acid done
clear
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question_answer4)
Identify the enzyme which converts glucose to ethyl alcohol.
A)
Zymase done
clear
B)
Invertase done
clear
C)
Maltase done
clear
D)
Diastase done
clear
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question_answer5)
Mineral acids are stronger acids than carboxylic acids because
A. mineral acids are completely ionised |
B. carboxylic acids are completely ionised |
C. mineral acids are partially ionised |
D. carboxylic acids are partially ionised |
A)
A and D done
clear
B)
B and C done
clear
C)
A and B done
clear
D)
C and D done
clear
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question_answer6)
'Drinking alcohol' is very harmful and it ruins the health. |
'Drinking alcohol' stands for: |
A)
drinking methyl alcohol done
clear
B)
drinking ethyl alcohol done
clear
C)
drinking propyl alcohol done
clear
D)
drinking isopropyl alcohol done
clear
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question_answer7)
Which of the following has shortest carbon-carbon bond length?
A)
\[{{C}_{2}}{{H}_{2}}\] done
clear
B)
\[{{C}_{2}}{{H}_{4}}\] done
clear
C)
\[{{C}_{2}}{{H}_{6}}\] done
clear
D)
\[{{C}_{6}}{{H}_{6}}\] done
clear
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question_answer8)
Which of the following can be used distinguish between ethane and ethene?
A)
A lighted splinter done
clear
B)
Aqueous bromine done
clear
C)
Litmus solution done
clear
D)
Lime water done
clear
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question_answer9)
|
Column-I |
|
Column-II |
A. |
Carbon black |
P. |
Water filters. |
B. |
Diamond |
Q. |
Fuel |
C. |
Coke |
R. |
Jewellery |
D. |
Charcoal |
S. |
Filler in automobiles |
A)
A-Q; B-R; C-S; D-P done
clear
B)
A-P; B-Q; C-Q; D-S done
clear
C)
A-S; B-R; C-P; D-Q done
clear
D)
A-S; B-R; C-Q; D-P done
clear
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question_answer10)
|
Column-I |
|
Column-II |
A. |
Polyethylene |
P. |
wood glue |
B. |
Cellulose acetate |
Q. |
Soft drinks |
C. |
Polyvinyl acetate |
R. |
Descaling agents |
D. |
Dil Acetic acid |
S. |
Photographic film. |
A)
A-Q; B-S; C-P; D-R done
clear
B)
A-S; B-Q; C-P; D-R done
clear
C)
A-Q; B-S; C-R; D-P done
clear
D)
A-S; B-Q; C-R; D-P done
clear
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question_answer11)
Gas welding used for welding broken pieces of iron, we normally use a mixture of:
A)
ethane and oxygen done
clear
B)
ethene and oxygen done
clear
C)
ethyne and oxygen done
clear
D)
ethene and air done
clear
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question_answer12)
On the basis of following features identify the correct option
A. Drinks containing ethanol |
B. These drinks are major source of income to government |
A)
Alcoholic beverages done
clear
B)
Soft drinks done
clear
C)
Carbonated beverages done
clear
D)
Rectified spirit done
clear
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question_answer13)
The flavour of apple is mainly due to which one of the following? [CDS]
A)
Formalin done
clear
B)
Benzene done
clear
C)
Ethanol done
clear
D)
Benzaldehyde done
clear
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question_answer14)
Which of the following has maximum density [CDS]
A)
Chloroform done
clear
B)
Water done
clear
C)
Benzene done
clear
D)
Ice done
clear
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question_answer15)
Addition of ethylene dibromide to petrol [CDS]
A)
increases the octane number of fuel done
clear
B)
helps elimination of lead oxide done
clear
C)
removes the sulphur compound in petrol done
clear
D)
serves as a substitute of tetraethyl lead done
clear
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question_answer16)
The offending substance in the liquor tragedies leading to blindness etc., is [IAS Prelim]
A)
ethyl alcohol done
clear
B)
amyl alcohol done
clear
C)
benzyl alcohol done
clear
D)
methyl alcohol done
clear
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question_answer17)
The characteristic odour of garlic is due to [IAS Prelim]
A)
a chloro compound done
clear
B)
a sulphur compound done
clear
C)
a fluorine compound done
clear
D)
acetic acid done
clear
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question_answer18)
Which one of the following is an active component of oil of clove? [IAS Prelim]
A)
Menthol done
clear
B)
Eugenol done
clear
C)
Methanol done
clear
D)
Benzaldehyde done
clear
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question_answer19)
Consider the following statements about acetylene: [IAS Prelim]
1. It is used in welding industry |
2. It is a raw material for preparing plastics |
3. It is easily obtained by mixing silicon carbide and water of these statements |
A)
1 and 2 are correct done
clear
B)
1 and 3 are correct done
clear
C)
2 and 3 are correct done
clear
D)
1, 2 and 3 are correct done
clear
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question_answer20)
Which one of the following is the correct sequence in increasing order of molecular weights of the hydrocarbons? [IAS Prelim]
A)
Methane, ethane, propane and butane done
clear
B)
Propane, butane, ethane and methane done
clear
C)
Butane, ethane, propane and methane done
clear
D)
Butane, propane, ethane and methane done
clear
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question_answer21)
Assertion [A]: The main constituent of the liquefied petroleum gas is methane. |
Reason [R]: Methane can be used directly for burning in homes and factories where it can be supplied through pipelines. [IAS Prelim] |
A)
Both A and R are true and R is the correct explanation of A done
clear
B)
Both A and R are true but R is not the correct explanation of A done
clear
C)
A is true but R is false done
clear
D)
A is false but R is true done
clear
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question_answer22)
A bee-sting leaves an acid which causes pain and irritation. The injected acid is [NDA]
A)
acetic acid done
clear
B)
sulphuric acid done
clear
C)
citric acid done
clear
D)
methanoic acid done
clear
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