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Chemistry

Chemistry
Chemical formula of washing soda is

NaHCO3
Ca(OH)2
Na2SO4.10H2O
Na2CO3.10H2O

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Chemistry
The element used in the manufacture of safety matches is

Sulphur
Magnesium
Phosphorous
Silicon

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Chemistry
Electrolysis of an aqueous solution of copper sulphate using copper electrodes gives

Copper at anode and oxygen at cathode.
Copper at cathode and anodes dissolve to give copper
Hydrogen at cathode and oxygen at anode
Copper at cathode and oxygen at anode

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Chemistry
The tip of the match-stick contains

Phosphorus pentoxide
Phosphorus trichloride
Red phosphorus
White phosphorus

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Chemistry
Brass is a

Element
Homogeneous mixture
Heterogeneous mixture
Compound

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Chemistry
Vulcanization of rubber is carried out by adding

Sulphur
Ozone
Carbon
Phosphorus

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MORE MCQ ON Chemistry

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