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 Multiple Choice QuestionsMultiple Choice Questions

141.

The product obtained ,heating ethanol with conc. H2SO4 at 165° - 170°C is :

  • (C2H5)2SO4

  • CH2=CH2

  • CH2F-CH2F

  • CF2=CFCl


142.

The structural formula of picric acid is :


143.

Phenol reacts with aqueous bromine to give :

  •  + 


144.

Assertion : t-Butyl methyl ether is not prepared by the reaction of t-butyl bromide with sodium methoxide.

Reason : Sodium methoxide is a strong nucleophile.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion.

  • If assertion is true but reason is false.

  • If both assertion and reason are false.


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145.

Among the following the most reactive towards alcoholic KOH is

  • CH2=CHBr

  • CH3COCH2CH2Br

  • CH3CH2Br

  • CH3CH2CH2Br


146.

Propan-1-ol can be prepared from propene by

  • H2O/H2SO4

  • Hg(OAc)2/H2O followed by NaBH4

  • B2H6 followed by H2O2

  • CH3CO2H/H2SO4


147.

Assertion : Molar entropy of vaporisation of water is different from ethanol.

Reason : Water is more polar than ethanol.

  • If both assertion and reason are true and reason is the correct explanation of assertion.

  • If both assertion and reason are true but reason is not the correct explanation of assertion

  • If assertion is true but reason is false

  • If both assertion and reason are false.


148.

The product of the given reacion is


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149.

In the reaction,

R MgBr + HC(OEt)3 Ether, H3O+ P, the product P is

  • RCHO

  • R2CHOEt

  • R3CH

  • RCH(OEt)2


A.

RCHO

In the above given reaction, the product P is


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150.

Which of the following statements is not true about alcohols?

  • Lower alochols have fiery taste and strong smell.

  • As molecular mass increases the boiling point increases.

  • Lower alcohols are water insoluble and their solubility increases with molecular weight.

  • Lower alcohols are water soluble and their solubility decreases with molecular weight.


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