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Chemistry Class 12 Chapter 16
Environmental Chemistry
Test 8
1.
Which type of aldehyde gives cannizzaro reaction?
Formaldehyde
Acetaldehyde
Propionic aldehyde
n-butyraldehyde
2.
Which is the example of acid catalyzed reaction?
Aldol condensation
Cannizzaro reaction
Reaction with HCN
Polymerization
3.
Which of the following is strong oxidizing agent?
Fehiling solution
Tollen reagent
Benedict solution
Acidified KMnO
4
4.
The formation of cyanohydrins from a ketones is an example of?
Electrophilic addition
Nucleophilic addition
Nucleophilic substation
Electrophilic substation
5.
When acetaldehyde is heated with Fehling’s solution, it gives a red precipitate of?
Cu
CuO
Cu+ Cu
2
O
Cu
2
O
6.
A plastic Backlit is a compound of HCHO with?
Benzene
Phenol
Ammonia
hydrocarbon
7.
Methyl ketones are characterized through?
Tollen’s reagent
Schiff’s test
Iodoform test
Benedict’s reagent
8.
In order to obtain acetaldehyde from calcium acetate, it should be heated with?
Calcium acetate
Calcium acid
Calcium format
Formic acid
9.
Which of the following substance gives acetaldehyde on dry distillation?
CH
3
COOH)
2
Ca
(HCOO)
2
Ca
Both a and b
None
10.
Which of the following have the highest boiling point?
Metyhanal
Ethanal
Propanal
Hexanone
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