1
WB JEE 2021
MCQ (Single Correct Answer)
+1
-0.25
Change Language
The exact order of boiling points of the compounds n-pentane, isopentane, butanone and 1-butanol is
A
n-pentane < isopentane < butanone < 1-butanol
B
isopentane < n-pentane < butanone < 1-butanol
C
butanone < n-pentane < isopentane < 1-butanol
D
1-butanol < butanone < n-pentane < isopentane
2
WB JEE 2020
MCQ (Single Correct Answer)
+1
-0.25
Change Language
The total number of alkyl bromides (including stereoisomers) formed in the reaction $$M{e_3}C - CH = C{H_2} + HBr \to $$ will be
A
1
B
2
C
3
D
No bromide forms
3
WB JEE 2018
MCQ (Single Correct Answer)
+1
-0.33
Change Language
CH3 $$-$$ C $$ \equiv $$ C MgBr can be prepared by the reaction of
A
CH3 $$-$$ C $$ \equiv $$ C $$-$$ Br with MgBr2
B
CH3 $$-$$ C $$ \equiv $$ CH with MgBr2
C
CH3 $$-$$ C $$ \equiv $$ CH with KBr and Mg metal
D
CH3 $$-$$ C $$ \equiv $$ CH with CH3MgBr
4
WB JEE 2017
MCQ (Single Correct Answer)
+1
-0.25
Change Language
The isomerisation of 1-butyne to 2-butyne can be achieved by treatment with
A
hydrochloric acid
B
ammoniacal silver nitrate
C
ammoniacal cuprous chloride
D
ethanolic potassium hydroxide
WB JEE Subjects
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
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CBSE
Class 12