set 3 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 3 EXERCISES
The following question based on organic chemistry topic of general science mcq
(a) diols
(b) carboxylic acids
(c) diketones
(d) dialdehydes
The correct answers to the above question in:
Answer: (b)
General formula
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Question : 1
Which among the following are unsaturated hydrocarbons?
- $H_3C - CH_2 - CH_2 - CH_3$
- $H_3C - C ≡ C - CH_3$
- $H_3C - {CH} ↙{|} ↙{CH_3} - CH_3$
- $H_3C - {CH} ↙{|} ↙{CH_3} = CH_3$
a) (ii) and (iv)
b) (ii) and (iii)
c) (i) and (iii)
d) (iii) and (iv)
Answer »Answer: (a)
Unsaturated hydrocarbons have double or triple bond.
Question : 2
General formula of alkenes and alkyl radicals are respectively:
a) CnH2n–1 and CnH2n
b) CnH2n and CnH2n+2
c) CnH2n and CnH2n+1
d) CnH2n+1 and CnH2n+2
Answer »Answer: (c)
Question : 3
If a hydrocarbon has any double bond, it is
a) alkene
b) alkane
c) alkyne
d) All the above
Answer »Answer: (a)
Alkenes have double bond.
Question : 4
The enzyme involved in the oxidation of ethanol to form vinegar is
a) oxidase
b) acetobacter
c) zymase
d) invertase
Answer »Answer: (b)
Question : 5
The offending substance in the liquor tragedies leading to blindness etc., is
a) amyl alcohol
b) benzyl alcohol
c) ethyl alcohol
d) methyl alcohol
Answer »Answer: (d)
Question : 6
The flavour of apple is mainly due to which one of the following?
a) Benzene
b) Ethanol
c) Formalin
d) Benzaldehyde
Answer »Answer: (b)
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