| 1 |
Matte is a mixture of: |
- A. FeS and CuS
- B. Cu<sub>2</sub>O and FeO
- C. Cu<sub>2</sub>S and FeS
- D. CuS and FeO
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| 2 |
Which one of the ore of copper? |
- A. Copper glance
- B. Chalcopyrite
- C. Both a and b
- D. None of these
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| 3 |
How many units are in Pakistan for manufacturing of Urea. |
|
| 4 |
Formula of Urea is. |
- A. KCNO
- B. H<sub>2</sub>N-CO-NH<sub>2</sub>
- C. HN-CO<sub>2</sub>-NH
- D. H<sub>3</sub>N-CO-NH<sub>3</sub>
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| 5 |
How many % age of nitrogen in urea fertilizers? |
- A. 40.6
- B. 45.6
- C. 46.6
- D. 50
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| 6 |
Which one of the following is not a fraction of petroleum? |
- A. Kerosene oil
- B. Diesel oil
- C. Alcohol
- D. Petrol
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| 7 |
Chemical formula of copper glance is: |
- A. Cu2O
- B. Cu2S
- C. CuFeS2
- D. CuSO4
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| 8 |
In solvay's process slaked lime is used to: |
- A. Prepare CO<sub>2</sub>
- B. Prepare quick lime
- C. Recover ammonia
- D. Form Na<sub>2</sub>CO<sub>3</sub>
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| 9 |
Petroleum fraction having composition C<sub>7 </sub>to C<sub>10 </sub>IS called |
- A. Petroleum gas
- B. Petroleum Ether
- C. Kerosine oil
- D. Gasoline or petrol
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| 10 |
How many percentage blister copper is pure? |
- A. 95%
- B. 75%
- C. 98%
- D. 100%
|