1
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
On heating which of the following releases CO2 most easily?
A
Na2CO3
B
MgCO3
C
CaCO3
D
K2CO3
2
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
20.0 g of a magnesium carbonate sample decomposes on heating to give carbon dioxide and 8.0 g magnesium oxide. What will be the percentage purity of magnesium carbonate in the sample?
(At. wt. of Mg = 24)
A
96
B
60
C
84
D
75
3
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
The oxidation of benzene by V2O5 in the presence of air produces
A
maleic anhydride
B
benzoic acid
C
benzaldehyde
D
benzoic anhydride.
4
AIPMT 2015
MCQ (Single Correct Answer)
+4
-1
Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is
A
hydrazine in presence of feebly acidic solution
B
hydrocyanic acid
C
sodium hydrogen sulphate
D
a Grignard reagent.
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