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Chemistry

Chemistry
Highest percentage of carbon is found in which form of coal?

Bituminous
Lignite
Anthracite
Peat

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Chemistry
Bauxite is an alloy of which of the following metals ?

Aluminium
Silver
Iron
Tin

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Chemistry
The presence of ozone in the stratosphere is responsible for

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

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Chemistry
Which one of the following is not a ‘green house gas’ ?

Methane
Carbon dioxide
Nitrogen
Chlorofluorocarbons

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Chemistry
Milk is a natural

Mixture
Suspension
Solution
Emulsion

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Chemistry
The mineral containing both magnesium and calcium is

calcite
carnallite
magnesite
dolomite

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MORE MCQ ON Chemistry

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