1
JEE Main 2013 (Offline)
MCQ (Single Correct Answer)
+4
-1
The order of stability of the following carbocations :

JEE Main 2013 (Offline) Chemistry - Basics of Organic Chemistry Question 229 English
A
$${\rm I}{\rm I}{\rm I} > {\rm I}{\rm I} > {\rm I}$$
B
$${\rm I}{\rm I} > {\rm I}{\rm I}{\rm I} > {\rm I}$$
C
$${\rm I} > {\rm I}{\rm I} > {\rm I}{\rm I}{\rm I}$$
D
$${\rm I}{\rm I}{\rm I} > {\rm I} > {\rm I}{\rm I}$$
2
JEE Main 2013 (Offline)
MCQ (Single Correct Answer)
+4
-1
Synthesis of each molecule of glucose in photosynthesis involves:
A
10 molecules of ATP
B
8 molecules of ATP
C
6 molecules of ATP
D
18 molecules of ATP
3
JEE Main 2013 (Offline)
MCQ (Single Correct Answer)
+4
-1
The gas leaked from a storage tank of the Union Carbide plant in Bhopal gas tragedy was:
A
Methylamine
B
Ammonia
C
Phosgene
D
Methyl isocyanate
4
JEE Main 2013 (Offline)
MCQ (Single Correct Answer)
+4
-1
An unknown alcohol is treated with the “Lucas reagent” to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism:
A
tertiary alcohol by SN1
B
secondary alcohol by SN2
C
tertiary alcohol by SN2
D
secondary alcohol by SN1
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