Entry Test MCQ :: Aldehydes and Ketones
|
|
|
|
|
|
| 11. |
Cannizzaros reaction is not given by |
| A. |
formaldehyde |
B. |
acetaldehyde |
| C. |
benzaldehyde |
D. |
trimethyl acetaldehyde |
Answer: Option B
Explanation:
|
| 12. |
Which of the following reagents will react with both aldehydes and ketones? |
| A. |
Grignard reagent |
B. |
Tollens reagent |
| C. |
Fehlings reagent |
D. |
Benedicts reagent |
Answer: Option A
Explanation:
|
| 13. |
Ketones are comparatively less reactive than aldehdye. It is due to |
| A. |
alkyl groups are electron donating |
B. |
steric hindrance |
| C. |
both (a) and (b) |
D. |
none |
Answer: Option C
Explanation:
|
| 14. |
Which of the following do not give aldol condensation reactions? |
| A. |
formaldehyde |
B. |
acetaldehyde |
| C. |
diemthyl ketone |
D. |
propionaldehyde |
Answer: Option A
Explanation:
|
| 15. |
Which of the following is not a use of formaldehyde? |
| A. |
in silvery mirror |
B. |
in making medicine urotropine |
| C. |
in making throat lozenges |
D. |
in making acetic acid |
Answer: Option D
Explanation:
|
| 16. |
Formaldehyde and lactose are combined to produce throat lozenges named as |
| A. |
formamint |
B. |
lactomint |
| C. |
aldomint |
D. |
formalactose |
Answer: Option A
Explanation:
|
| 17. |
Which of the following is not a use of acetaldehyde? |
| A. |
formation of phenolic resins |
B. |
formation of mirror |
| C. |
antiseptic inhalant |
D. |
formation of throat lozenges |
Answer: Option D
Explanation:
|
| 18. |
Formula of haloform is |
Answer: Option C
Explanation:
|
| 19. |
Formaldehyde condenses with phenol in the presence of dilute H2SO4 to yield |
| A. |
Nylon 66 |
B. |
urotropine |
| C. |
Aniline formaldehyde plastic |
D. |
Bakelite |
Answer: Option D
Explanation:
|
| 20. |
Formalin consists of mixture of formaldehyde methyl alcohol and water. Percentage of water in it is |
Answer: Option C
Explanation:
|
Read more:
|
|
