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Chemistry Class 12 Chapter 16
Environmental Chemistry
Test 9
1.
Cannizzaro’s reaction is not given by?
Benzaldehyde
Formaldehyde
Acetaldehyde
None of these
2.
Which aldehyde shows rapid reaction with sodium nitroprusside?
Formaldehyde
Acetaldehyde
Acetone
Benzaldehyde
3.
Formalin is formed by mixing formaldehyde in water?
40%
10%
20%
60%
4.
Which reagents reacts with both aldehyde and ketone?
Tollen’s reagent
Fehiling solution
Grignard’s reagent
Benedicts’ reagent
5.
Acetone reacts with HCN to form a cyanohydrins, it is an example of?
Electrophilic substitution
Nucleophilic addition
Electrophilic addition
Nucleophilic substation
6.
Which of the following compound will react with Tollen’s reagent?
CH
3-
CHO
CH
3-
CO-CH
3
CH
3-
COOH
All of these
7.
Which of the following reaction is not shown by ketones?
Reaction with NAHSO
3
Reaction with HCN
Reaction with 2,4 dinitrophenyl hydrazine
Reaction with fehiling solution
8.
The carbon atom of carbonyl group is?
Sp
3
hybridized
Sp hybridized
Variable
Sp
2
hybridized
9.
Which of the following reaction are associated with aldehydes and ketones?
Nucleophilic addition
Oxidation
All of these
Polymerization
10.
Which substance does not gives iodo form test?
Ethyl alcohol
Acetaldehyde
Methyl alcohol
Methyl keton
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