Question # 1

When quantity of electricity passed is one faraday then the mass deposited at the electrode is equal to

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One gm. atomic weight

One gm. Equivalent weight

Electrochemical equivalent

None of the above

Atmosphere of big/metropolitan cities is polluted most by

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Automobile exhausts

Pesticide residue

Household waste

Radio-active fall out

Setting of cement is an

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Exothermic reaction

Endothermic reaction

Neither exothermic nor endothermic

None

What quantity of limestone (CaCO₃) on heating will give 56 kg of CaO?

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1000 kg

56 kg

44 kg

100kg

Sea weeds are important source of

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Iron

Chlorine

Iodine

Bromine

The alkali metal which is liquid at 15°C is

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K

Cs

Na

None

Potassium crystallizes with a

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Orthogonal lattice

Cubic lattice

Triclinic

Ortho rhombic lattice

Which of the following is a colligative property?

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Melting point

Osmotic pressure

Freezing point

Sublimation temperature

An endothermic reaction is one in which

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Heat is converted into electricity

Heat is obsorbed

Heat is evolved

Heat is converted into mechanical work

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