Question # 1

Which one of the mineral acid.

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HCl

H₂SO₄

HNO₃

All of these

Ozone has a smell

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Bitter

Rotten egg

Sweat

None of them

In smelting process a small amount of coke is required because:

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it is highly endothermic process

it is highly exothermic process

it is very fast process

it is very slow process

The stratosphere layer is at height above the earth's surface.

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0-12 km

12-50 km

50-85 km

65-120 km

Which one of the following is polmerized to from benzene?

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ethane

ethene

methane

ethyne

The pH of water containing CO₂ is

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4-6

5.6-6

6-7

7-8

A reaction between an acid and base produce.

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Salt and water

Salt and gas

Salt and acid

Salt and bases

At dynamic equilibrium:

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The reactions stops to proceed

The amounts of reactants and products are equal

The speed of the forward is reverse reactions are equal

The reaction can no longer be reversed

Carbon monoxide is harmful to use because it:

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Paralyses lungs

Damages lungs

Reduce oxygen carrying ability of hemoglobin

Make the blood coagulate

Gypsum in water is.

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Sparingly soluble

Insoluble

Highly soluble

None of them

What percentage of nitrogen and oxygen is in the atmosphere.

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69%

79%

9%

89%

Which is not a part of flue gas?

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Furans

Dioxins

HCl

H₂SO₄

In irreversible reaction, dynamic equilibrium:

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Never establishes

Establishes before the completion of reaction

Establishes after the completion of reaction

Establishes readily

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