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Chemistry

Chemistry
The weight of 6.023 × 1022 atoms of carbon is

1.2 gms
120 gms
0.12 gms
12 gms

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Chemistry
Which of the following elements is obtained from sea weeds ?

Vanadium
Argon
Sulphur
Iodine

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Chemistry
Sulphur dioxide bleaches colouring matter by :

Reduction
Dehydration
Decomposition
Oxidation

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Chemistry
The purest form of water in nature is

Rain water
Sea water
Lake water
River water

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

Zinc
Copper
Lead
Tin

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Chemistry
Philosopher’s wool is chemically

Calcium oxide
Magnesium oxide
Aluminium oxide
Zinc oxide

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