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Chemistry

Chemistry
Formation of ozone hole is maximum over

India
Europe
Africa
Antarctica

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Chemistry
The metallic constituents of hard water are :

Magnesium, tin and iron
Calcium, magnesium and iron
Magnesium, calcium and tin
Iron, tin and calcium

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Chemistry
The gas that is used in the manufacture of vanaspati ghee is :

Oxygen
Carbon dioxide
Hydrogen
Nitrogen

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Chemistry
Isobars are lines joining places having equal

Rainfall
Height above sea-level
Pressure
Population

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Chemistry
Soap is prepared by boiling caustic soda with

Glycerine
Kerosene oil
Alcohol
Fats

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Chemistry
Lead pencil contains

Ferrous sulphide
Lead sulphide
Graphite
Lead

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MORE MCQ ON Chemistry

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