CBSE
Multiple Choice QuestionsThe product obtained ,heating ethanol with conc. H2SO4 at 165° - 170°C is :
(C2H5)2SO4
CH2=CH2
CH2F-CH2F
CF2=CFCl
The structural formula of picric acid is :
Phenol reacts with aqueous bromine to give :
+ 
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.
Among the following the most reactive towards alcoholic KOH is
CH2=CHBr
CH3COCH2CH2Br
CH3CH2Br
CH3CH2CH2Br
Propan-1-ol can be prepared from propene by
H2O/H2SO4
Hg(OAc)2/H2O followed by NaBH4
B2H6 followed by H2O2
CH3CO2H/H2SO4
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.
The product of the given reacion is
In the reaction,
R MgBr + HC(OEt)3 P, the product P is
RCHO
R2CHOEt
R3CH
RCH(OEt)2
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.
