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Chemistry Class 12 Chapter 16
Environmental Chemistry
Test 11
1.
For aldol condensation necessary condition?
Alpha-H
Alpha-C
Basic medium
All
2.
Acetaldehyde is prepared by the oxidation of?
Propyl alcohol
Methyl alcohol
None of these
Ethyl alcohol
3.
In aldehyde the carbonyl group is bonded to?
1 hydrogen and 1 carbon
At least 1 hydrogen
1 carbon
1 hydrogen
4.
Which of the following does not show aldol condensation reaction?
C
6
H
5
CHO
HCHO
CI
3
CHO
All
5.
Aldehydes are reduced to?
T
o
alcohol
P
o
alcohol
S
o
alcohol
Not possible
6.
Acetaldehyde cyano hydrine on acid hydrolysis yields?
Lactic acid
Valeric acid
Propoinic acid
Tartaric acid
7.
Nucleophilic addition reactions are catalyzed?
Acid
Both
Base
None
8.
Reactivity of carbonyl group is due to?
Oxygen atom
Sp
2
hybridization
C=O polarity
Carbon atom
9.
When aldehydes are prepared on industry scale the catalyst used is?
Iron oxide
Silver
All of these can be used
Molybdenum oxide
10.
Aldehyde group is mostly present in?
Base
Sugar
Acid
Stone
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