brodidit for students
الڈیہائیڈ اور کیٹون
بارہویں جماعت · کیمیا · 8 سوالات
نام: ____________________ تاریخ: ____________
The functional group of aldehydes is:
- A -COOH
- B -OH
- C -CO-
- D -CHO
Which reagent distinguishes aldehydes from ketones?
- A Sodium chloride
- B Bromine water
- C Litmus
- D Tollens' reagent
The simplest ketone is:
- A Ethanal
- B Propanone
- C Methanal
- D Butanone
Reduction of an aldehyde gives a:
- A Carboxylic acid
- B Ester
- C Primary alcohol
- D Secondary alcohol
Fehling's solution is reduced by aldehydes to give a:
- A Blue solution
- B White gas
- C Black solid
- D Red precipitate
Methanal is commonly known as:
- A Acetaldehyde
- B Acetic acid
- C Acetone
- D Formaldehyde
Propanone is commonly used as a:
- A Solvent
- B Fertiliser
- C Sweetener
- D Fuel only
The carbonyl group is:
- A C=O
- B COOH
- C C-OH
- D C-O-C
جوابی کلید
1. D, 2. D, 3. B, 4. C, 5. D, 6. D, 7. A, 8. A
An aldehyde has the -CHO group.
Aldehydes give a silver mirror with Tollens' reagent. Ketones do not.
Propanone (acetone) is the simplest ketone.
Aldehydes are reduced to primary alcohols.
Copper(II) is reduced to red copper(I) oxide.
Formaldehyde is methanal.
Acetone is a common solvent.
A carbon double bonded to oxygen.