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Chemistry

Chemistry
PH scale ranges from

0 – 7
0 – 14
8 – 14
None

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Chemistry
The mineral containing both magnesium and calcium is

magnesite
carnallite
calcite
dolomite

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Chemistry
The most abundant element in the earth’s atmosphere is

Nitrogen
Oxygen
Krypton
Argon

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Chemistry
Burning pyrites ore gives out

Sulphur dioxide gas
Nitric oxide gas
Carbon dioxide gas
Nitrogen dioxide gas

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Chemistry
For generation of biogas, the materials commonly used are

Forest residues
Animal wastes
Crop residues
Aquatic plants

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Chemistry
The material used in the manufacture of lead pencil is

Mica
Graphite
Carbon
Lead

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MORE MCQ ON Chemistry

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