Question # 1

Which one of the following is manufactured by Solvar's process:

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caustic soda

washing soda

urea

sulphuric acid

The number of carbon atoms present in petroleum ether.

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1-5

2-5

3-7

5-7

How many % age of nitrogen in urea fertilizers?

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40.6

45.6

46.6

50

Which one is not the fraction of residual oil?

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Paraffin wax

Asphalt

Fuel oil

Coke

In the bessemerization process.

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Roasted ore is beated.

Molten matte is removed.

Molten matte is heated

Molten matte is added

The elements that do not conduct heat and electricity are called.

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Metallurgy

Non metal

Metalloid

Alloy

The number of carbon atoms present in fuel oil.

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14-18

15-18

16-18

17-18

Composition of carbon in kerosene oil is.

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C₁₀-C₁₂

C₁₂-C₁₂

C₁₆-C₁₈

C₃₀-C₃₀

The number of carbon atoms present in diesel oil.

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10-15

11-15

12-15

13-15

Concentration of the copper ore is carried out by:

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Calcinations

Roasting

Forth flotation

Distillation

The number of carbon atoms present in gasoline or petrol.

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5-10

6-10

7-10

8-10

Blonde hair contains compounds of:

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molybdenum

iron

titanium

copper

Which one of the ore of copper?

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Copper glance

Chalcopyrite

Both a and b

None of these

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