| 1 |
Which Gas is essential for proteins. |
- A. Sulphur
- B. Hydrogen
- C. Nitrogen
- D. Oxygen
|
| 2 |
Which gas is slightly soluble in water. |
- A. Neon
- B. Carbon di oxide
- C. Argon
- D. Oxygen
|
| 3 |
Iodine .......... 131 is used in treat the........................ |
- A. Cancer
- B. Bone growth
- C. Thyroid
- D. Brain tumor
|
| 4 |
Coke is formed in the absence of.......... |
- A. Carbon
- B. Oxygen
- C. Air
- D. Hydrogen
|
| 5 |
The amout of carbon dioxide int eh air is increased by. |
- A. Photosynthesis
- B. Respiration
- C. Burning
- D. Evaporation
|
| 6 |
The most common element in the universe is |
- A. oxygen
- B. hydrogen
- C. nitrogen
- D. iron
|
| 7 |
The compounds consisting of Amino acids are called |
- A. carbohydrate
- B. Fast
- C. Proteins
- D. organic compounds
|
| 8 |
The process by which green plants manufacture their food is |
- A. respiration
- B. photosynthesis
- C. oxidation
- D. nitrogen fixation
|
| 9 |
Teh process of converting atompspheric nitrogen to useable from is called. |
- A. Nitrogen cycle.
- B. Carbon cycle
- C. Nitrogen fixation
- D. Water cycle
|
| 10 |
The contents of sodium in leaf tissus vary from. |
- A. 0.01 - 10%
- B. 10-15%
- C. 12-16 %
|
