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Chemistry

Chemistry
Quartz is a crystalline form of

Alumina
Silica
Limestone
Glass

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Chemistry
Which one is a sublime substance?

Sugar
Potassium Iodide
Iodine
Table salt

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Chemistry
Global warming is mainly due to accumulation of

Oxides of sulphur
Carbon dioxide
Carbon monoxide
Oxides of nitrogen

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Chemistry
The gas used in the manufacture of vanaspati from vegetable oil is

carbon dioxide
oxygen
nitrogen
hydrogen

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Chemistry
The number of g-molecule of oxygen in 6.02 x 1024CO molecules is

0.5 gram of molecule
5 gram of molecule
1 gram of molecule
10 gram of molecule

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Chemistry
Concentration of a material which is lethal to 50% animal is called

LD50
NOAEL
ADI
LC50

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MORE MCQ ON Chemistry

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