| 1 |
The contents of sodium in leaf tissus vary from. |
- A. 0.01 - 10%
- B. 10-15%
- C. 12-16 %
|
| 2 |
Each day a normal man breathe............ litres of air. |
- A. 20,000 to 15,000
- B. 10,000 to 15,000
- C. 15,000 to 20,000
- D. 21,000, to 31,000
|
| 3 |
It is not crystalline form of carbon |
- A. charcoal
- B. graphite
- C. buckyballs
- D. diamond
|
| 4 |
Which Gas is essential for proteins. |
- A. Sulphur
- B. Hydrogen
- C. Nitrogen
- D. Oxygen
|
| 5 |
Iodine .......... 131 is used in treat the........................ |
- A. Cancer
- B. Bone growth
- C. Thyroid
- D. Brain tumor
|
| 6 |
Oxygen and nitrogen react to form. |
- A. Nitric Acid
- B. Nitrogen oxide
- C. Nitrogen peroxide
- D. Nitrate
|
| 7 |
The form of carbon which is not crystalline is. |
- A. Charcoal
- B. Graphite
- C. Bucky Ball
- D. Diamond
|
| 8 |
Teh process of converting atompspheric nitrogen to useable from is called. |
- A. Nitrogen cycle.
- B. Carbon cycle
- C. Nitrogen fixation
- D. Water cycle
|
| 9 |
The sun almost entirely consists to the element |
- A. oxygen
- B. iron
- C. phosphorus
- D. hydrogen
|
| 10 |
Coke is formed in the absence of.......... |
- A. Carbon
- B. Oxygen
- C. Air
- D. Hydrogen
|
