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Chemistry

Chemistry
One carat of diamond is equal to

200 mg
250 mg
100 mg
150 mg

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Chemistry
The important metal used with iron to produce stainless steel is

Chromium
Aluminium
Carbon
Tin

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Chemistry
The trans-uranium elements are the chemical elements with atomic numbers greater than

92
86
89
96

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Chemistry
The gas that usually causes explosions in coal mines is

Methane
Hydrogen
Air
Carbon monoxide

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Chemistry
PH value between 6.5-7.5 makes the soil

None of these
Neutral
Acidic
Basic

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Chemistry
The graphite rods in the nuclear reactor

produce neutrons
react with U to release energy
convert fast moving neutrons into thermal neutrons
undergo combustion which triggers the nuclear fission

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MORE MCQ ON Chemistry

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