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Chemistry

Chemistry
Which one is the most reactive gaseous element

Iodine
Bromine
Flourine
Chlorine

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Chemistry
Mercury is a :

Liquid non-metal
Solid non-metal
Liquid metal
Solid metal

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Chemistry
Muddy water is treated with alum in purification process, itis termed as :

Coagulation
Emulsification
Absorption
Adsorption

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Chemistry
Helium gas is used in gas balloons instead of hydrogen gas because it is

More abundant than hydrogen
More stable
Non-combustible
Lighter than hydrogen

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Chemistry
Heating of a ore below its melting point in the absence of air is known as

Roasting
Refining
Smelting
Calcination

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Chemistry
L.P.G. is mostly liquefied

Methane
Butane
Hydrogen
Oxygen

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MORE MCQ ON Chemistry

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