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Chemistry

Chemistry
An electric iron has a heating element made of :

Nichrome
Zinc
Copper
Tungsten

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Chemistry
Petroleum is a mixture of

Salts
Polymers
Hydrocarbons
Elements

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Chemistry
The chemical(s) most commonly used for cloud seeding or ‘artificial rainmaking’ is/are

Dry ice or frozen carbon dioxide
Sodium Chloride
Silver Iodide
All listed here

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Chemistry
The element with highest first ionisation energy is

Helium
Hydrogen
Lithium
Sodium

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Chemistry
Denatured spirit is ethanol mixed with

Kerosene
Pyridine
Petrol
Water

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Chemistry
Helium is added to the oxygen supply of deep sea divers because it is

Less soluble in blood than nitrogen at high pressure
Readily miscible with oxygen
Less poisonous than nitrogen
Lighter than nitrogen

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MORE MCQ ON Chemistry

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