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Chemistry

Chemistry
Which metal does not undergo corrosion due to the formation of oxide layer?

Iron
Zinc
Copper
Aluminium

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Chemistry
An electric iron has a heating element made of :

Tungsten
Copper
Nichrome
Zinc

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Chemistry
Which amidst the following is not a gem stone ?

Cat's-eye
Pearl
Topaz
Opal

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Chemistry
Persons working in cement plants and lime stone quarries are prone to disease like

Cancer
Silicosis
Pneumoconiosis
Asthma

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Chemistry
The “King of Metals” is :

Gold
Iron
Silver
Aluminium

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Chemistry
The gas dissolved in water that makes it basic is :

Ammonia
Hydrogen
Sulphur dioxide
Carbon dioxide

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MORE MCQ ON Chemistry

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