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Chemistry

Chemistry
The gas that usually causes explosions in coal mines is

Air
Carbon monoxide
Methane
Hydrogen

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Chemistry
Which mineral is the ore of aluminium ?

Magnetite
Haematite
Siderite
Bauxite

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Chemistry
Which one is the most reactive gaseous element

Flourine
Bromine
Chlorine
Iodine

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Chemistry
Which one of the following is not a characteristic feature of alloys? They are

Homogeneous systems
Compounds
Mixtures
Solutions

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Chemistry
During fermentation of sugar, the compound which is always formed is :

Ethylene
Methyl Alcohol
Ethyl Alcohol
Acetic Acid

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Chemistry
The alkaloid naturally found in coffee, cocoa and cola nut is

Morphine
Caffeine
Cocaine
Tannin

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MORE MCQ ON Chemistry

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