General Science MCQ – 131 (Chemistry)

chemistry, physics, biology

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General Science MCQs including Physics, Chemistry, Biology. This help is General Eligibility Test like Entrance Exam, Sainik School, NDA, Army, All India Competitive exam, and All HP Exams. You can also play our weekly quiz and download all quizzes PDF as well.

1. Benzenediazonium chloride on reaction with phenol in weakly basic medium gives?
(A) Diphenyl ether
(B) p-hydroxyazobenzene
(C) Chlorobenzene
(D) Benzene

2. Phenol reacts with bromine in CS2 at low temperature to give?
(A) m-bromophenol
(B) o-and p- bromophenol
(C) p- bromophenol
(D) 2,4,6-tribromophenol

3. When phenol is treated with excess bromine water it gives?
(A) m-bromophenol
(B) o-and p- bromophenol
(C) p- bromophenol
(D) 2,4,6-tribromophenol

4. Phenol on reduction with H2 in the presence of Ni catalyst gives?
(A) Benzene
(B) Toluene
(C) Cyclohexane
(D) Cyclohexanol

5. Dehydration of alcohol is an example of?
(A) Addition reaction
(B) Elimination reaction
(C) Substitution reaction
(D) Redox reaction

6. The compound obtained by the reaction of ethane with diborane followed by hydrolysis with alkaline H2O2 is?
(A) Ethanol
(B) Propanol
(C) Ethanal
(D) Triethyl bromide

7. Which of the following is formed when phenol is exposed to air?
(A) o-Benzoquinone
(B) p- Benzoquinone
(C) Phenoquinone
(D) o-and p- Benzoquinone

8. Which of the following is formed when glycerol is heated with oxalic acid at 503K?
(A) Glycerin acid
(B) Acrolein
(C) Allyl alcohol
(D) Methanoic acid

9. The alcohol which does not react with Lucas regent is?
(A) isobutyl alcohol
(B) n-butanol
(C) tert-butyl alcohol
(D) sec-butyl alcohol

10. Phenol is less acidic than?
(A) acetic acid
(B) p-methozyphenol
(C) Nitrophenol
(D) Ethanol

General Science MCQ – 130 (Biology)

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