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Chemistry

Chemistry
Depletion of ozone layer causes

Blood cancer
Skin cancer
Lung cancer
Breast cancer

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Chemistry
The metal compound commonly found in Sindhoor or Kumkum is based on

Lead
Zinc
Copper
Tin

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Chemistry
The percentage of nitrogen present in ammonium sulphate is :

0.305
0.18
0.27
0.25

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Chemistry
The graphite rods in the nuclear reactor

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

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Chemistry
The coloured discharge tubes for advertisement mainly contain

Xenon
Helium
Argon
Neon

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Chemistry
The lowest layer of earth's atmosphere is

Stratosphere
Ionosphere
Mesosphere
Troposphere

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MORE MCQ ON Chemistry

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