42. Methyl propane is an isomer of
43. Non-stick frying pans are coated with
44. Match List I with List II.
List-I (Item)
List-II (Toxic Substance)
a. CFL Lamp
1. Nitrogen oxide
b. Automobile battery
2. Phthalates
c. Polymer
3. Lead
d. Diesel engine
4. Mercury
List-I (Item) | List-II (Toxic Substance) |
a. CFL Lamp | 1. Nitrogen oxide |
b. Automobile battery | 2. Phthalates |
c. Polymer | 3. Lead |
d. Diesel engine | 4. Mercury |
45. . . . . . . . . polymer is used in making floor tiles.
46. Chemical name of vitamin-A is
47. Which one of the following acids is also known as Vitamin-C?
48. Assertion (A) Natural rubber has poor elasticity.
Reason (R) It has almost no cross linkages.
Reason (R) It has almost no cross linkages.