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Chemistry

Chemistry
The major use of sulphur is in the manufacture of

H2SO4
SO2
Fungicide
H2S

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Chemistry
The presence of ozone in the stratosphere is responsible for

Increasing the average global temperature in recent years
Supplying oxygen for people travelling in jets
Higher rate of photosynthesis
Checking the penetration of ultra-violet rays to the earth

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Chemistry
Glycol is added to aviation gasoline because it

Prevents freezing of petrol
Increases efficiency of petrol
Reduces consumption of petrol
Reduces evaporation of petrol

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Chemistry
Hardness of the water is commonly measured in terms of

Calcium sulphate equivalents
Magnesium carbonate equivalents
Magnesium sulphate equivalents
Calcium carbonate equivalents

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Chemistry
In arc welding, Argon is used because of its

High calorific value
High flammability
Low reactivity with metal
Ability to lower the melting point of the metal

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Chemistry
Which is known as carbolic acid?

Phenol
Acetic acid
Ethanol
Oxalic acid

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MORE MCQ ON Chemistry

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