1 |
The number of carbon atoms present in diesel oil. |
10-15
11-15
12-15
13-15
|
2 |
The number of carbon atoms present in kerosene oil. |
8-12
9-12
10-12
11-12
|
3 |
The number of carbon atoms present in gasoline or petrol. |
5-10
6-10
7-10
8-10
|
4 |
The number of carbon atoms present in petroleum ether. |
1-5
2-5
3-7
5-7
|
5 |
The number of carbon atoms present in petroleum gas. |
1-2
1-3
1-4
1-5
|
6 |
Formula of Urea is. |
KCNO
H<sub>2</sub>N-CO-NH<sub>2</sub>
HN-CO<sub>2</sub>-NH
H<sub>3</sub>N-CO-NH<sub>3</sub>
|
7 |
How many % age of urea is used as fertilizers? |
80%
90%
95%
98%
|
8 |
How many % age of nitrogen present in air by volume? |
70%
75%
78%
80%
|
9 |
Ammonia is prepared by the process . |
Ostwald
Haber
Clark
All
|
10 |
The raw materials for the manufacturing of urea are. |
Ammonia
Carbondioxide
Limestone
a & b
|
11 |
How many % age of nitrogen in urea fertilizers? |
40.6
45.6
46.6
50
|
12 |
Sindh alkalies limited was established near Karachi in. |
1965
1966
1970
2000
|