| 1 |
Formula of baking soda is. |
- A. Na<sub>2</sub>CO<sub>3</sub>
- B. NaHCO<sub>3</sub>
- C. Na<sub>2</sub>SO<sub>4</sub>
- D. Na<sub>2</sub>PO<sub>4</sub>
|
| 2 |
How many % age of nitrogen present in air by volume? |
- A. 70%
- B. 75%
- C. 78%
- D. 80%
|
| 3 |
The number of carbon atoms present in petroleum gas. |
- A. 1-2
- B. 1-3
- C. 1-4
- D. 1-5
|
| 4 |
Which one is not the fraction of residual oil? |
- A. Paraffin wax
- B. Asphalt
- C. Fuel oil
- D. Coke
|
| 5 |
Chalco-pyite is an ore of: |
- A. iron
- B. aluminium
- C. silver
- D. copper
|
| 6 |
Urea is nitrogenous fertilizer. It consist of nitrogen. |
- A. 26.6 %
- B. 36.6%
- C. 46.6%
- D. 56.6%
|
| 7 |
The residual oil is heated above 400 c to produce. |
- A. Lubricants
- B. Paraffin wax
- C. Asphalt
- D. All
|
| 8 |
How many % age of urea is used as fertilizers? |
- A. 80%
- B. 90%
- C. 95%
- D. 98%
|
| 9 |
Formula of soda ash is. |
- A. Na<sub>2</sub>CO<sub>3</sub>
- B. NaHCO<sub>3</sub>
- C. Na<sub>2</sub>SO<sub>4</sub>
- D. Na<sub>3</sub>PO<sub>4</sub>
|
| 10 |
Crude oil is heated to the fractionating furnace upto. |
- A. 300 <sup>o</sup>C
- B. 350<sup>o</sup>C
- C. 400<sup>o</sup>C
- D. 450<sup>o</sup>C
|
