Chemistry Written Test Class 12 Online Exam Quiz
Chemistry Written Test Class 12 GK Quiz. Question and Answers related to Chemistry Written Test Class 12. MCQ (Multiple Choice Questions with answers about Chemistry Written Test Class 12
How many products are formed from the aldol condensation reaction between ethanal and propanal?
Options
A : 1
B : 2
C : 3
D : 4
What is the proportion of Fehling solution A to Fehling solution B in the solution of Fehling’s reagent for conducting Fehling’s test?
Options
A : 1:1
B : 1:2
C : 2:1
D : 1:3
Four compounds A, B, C and D were heated individually with Tollen’s reagent. It was found that all compounds other than D formed a silver mirror on the inside of their test tubes. Identify the compound D.
Options
A : Acetaldehyde
B : Butyraldehyde
C : Acetone
D : Benzaldehyde
Which of the following compound does not undergo aldol condensation?
Options
A : Acetaldehyde
B : Propanal
C : Propanone
D : Benzaldehyde
Which of the following is Tollen’s reagent?
Options
A : Ammoniacal silver nitrate solution
B : Aqueous copper sulphate
C : Alkaline sodium potassium tartarate
D : Mixture of sodium carbonate, sodium citrate and Cu2+ complex
What is the product of Clemmensen reduction on acetophenone?
Options
A : Benzaldehyde
B : Methyl benzene
C : Ethyl benzene
D : Benzophenone
Which of the following compounds can be distinguished from iodoform test?
Options
A : Benzaldehyde and benzophenone
B : Benzaldehyde and formaldehyde
C : Acetophenone and acetaldehyde
D : Acetophenone and benzophenone
What are the major products of the oxidation of pentan-2-one with concentrated HNO3 at very high temperatures?
Options
A : Butanoic acid and methanoic acid
B : Propanoic acid and ethanoic acid
C : Pentanoic acid
D : Butanoic acid and ethanoic acid
When an aldehyde is heated with Fehling’s solution, a reddish-brown precipitate is formed due to which compound?
Options
A : CuS
B : AgBr
C : Cu2O
D : CdS
Catalytic hydrogenation of _______ gives propan-2-ol.
Options
A : formaldehyde
B : acetaldehyde
C : propionaldehyde
D : acetone
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