1 |
Petroleum fraction having composition C5 to C7 is. |
Petroleum Gas
Petroleum Ether
Kerosine oil
Gasoline or petrol
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2 |
Petroleum fraction having composition C7 to C10 IS called |
Petroleum gas
Petroleum Ether
Kerosine oil
Gasoline or petrol
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3 |
Which one is not the fraction of residual oil? |
Paraffin wax
Asphalt
Fuel oil
Coke
|
4 |
Composition of carbon in the diesel oil. |
C<sub>7</sub>-C<sub>10</sub>
C<sub>10</sub>-C<sub>12</sub>
C<sub>13</sub>-C<sub>15</sub>
C<sub>15</sub>-C<sub>18</sub>
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5 |
Composition of carbon in kerosene oil is. |
C<sub>10</sub>-C<sub>12</sub>
C<sub>12</sub>-C<sub>12</sub>
C<sub>16</sub>-C<sub>18</sub>
C<sub>30</sub>-C<sub>30</sub>
|
6 |
How many units are in Pakistan for manufacturing of Urea. |
3
6
9
12
|
7 |
Urea is nitrogenous fertilizer. It consist of nitrogen. |
26.6 %
36.6%
46.6%
56.6%
|
8 |
Ammonia is prepared by: |
Solvay's process
Haber's process
Floatation process
Bayer's process
|
9 |
When NaHCO3 is heated if forms: |
CO<sub>2</sub>
Ca(OH)<sub>2</sub>
CaCO<sub>3</sub>
CaO
|
10 |
The impurities associated with the minerals are known as: |
Metallurgy
Ores
Gangue
Compounds
|
11 |
On which bases froth floatation process take place? |
Density bases
Concentration basis
Watting basis
None of these
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12 |
How many percentage blister copper is pure? |
95%
75%
98%
100%
|