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Chemistry

Chemistry
The percentage of oxygen in air is approximately

1
0.21
0.78
0.01

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Chemistry
'Fire-fighting clothes' are made from

Steatite
Mica
Talc
Asbestos

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Chemistry
The advantage of detergents over soaps is

Detergents could not give much lather
Soaps give lather with only soft water
Detergents are soluble in water
Detergents give lather even with hard water

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

Zinc
Tin
Copper
Lead

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Chemistry
The coloured discharge tubes for advertisement mainly contain

Argon
Xenon
Neon
Helium

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Chemistry
Iron rusts quickly in

Rain water
Sea water
River water
Distilled water

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MORE MCQ ON Chemistry

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