| 1 |
All of the followings react with Fehling solution except |
- A. CH2CH2CHO
- B. CH3-CH2COCH3
- C. HCHO
- D. CH3-CHO
|
| 2 |
Formalin is a 40% solution of |
- A. CH<sub>3</sub>CHO
- B. CH<sub>3</sub>OH
- C. HCHO
- D. CH<sub>3</sub>OCH
|
| 3 |
A snake was preserved in a solution and was placed in biology laboratory. The solution is. |
- A. De ionized water
- B. Fehling solution
- C. Formalin
- D. Chloroform
|
| 4 |
A cyanohydrin is formed by the reaction of |
- A. Alcohol and HCN
- B. Ketone and NH3
- C. Aldehyde and NH2OH
- D. Aldehyde and HCN
|
| 5 |
Air of the following tests are used to identify aldehydes except. |
- A. Tollen's test
- B. Fehling test
- C. Baeyer's test
- D. Benedict test
|
| 6 |
Silver mirror test is given by |
- A. Ethers
- B. Ketones
- C. Acids
- D. Aldehydes
|
| 7 |
Acetaldehyde react, with Grignard reagent to form |
- A. Primary alcohol
- B. Secondary alcohol
- C. Ter alcohol
- D. Carboxylic acids
|
| 8 |
Which of the following has highest boiling point |
- A. Methanal
- B. Ethanal
- C. Propanal
- D. 2-hexanone
|
| 9 |
Structure of carbonyl is |
- A. Tetrahedral
- B. Linear
- C. Octahederal
- D. Trigonal planar
|
| 10 |
Common names of aldehydes are derived from the common names of. |
- A. Alcohol
- B. Ketones
- C. Carboxylic acids
- D. Alkenes
|