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Chemistry

Chemistry
Silicon is a

Insulator
Conductor
Semiconductor
Nonconductor

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Chemistry
The process which does not evolve CO2 in air is

Organic delay
Breathing
Burning
Photosynthesis

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

Coagulation
Adsorption
Emulsification
Absorption

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Chemistry
The substance which does not expand on going from liquid state to solid state is

Water
Aluminium
Type metal
Cast-iron

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Chemistry
The chief constituent of vinegar is

Oxalic acid
Acetic acid
Salycylic acid
Formic acid

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Chemistry
The number of neutrons present in an element having mass number 226 and atomic number 88 is :

88
50
138
314

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