Question # 1

Fertililzer are made by

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Nature only

Artificial methods only

Both artificial and natural methods

None of the above

Iron, once dipped in concentrated H₂SO₄, does not displace copper from copper sulphates solution, because

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It is less reactive than copper

A layer of sulphates is deposited on it

An inert layer of iron oxide is deposited on it.

All valence electrons of iron are consumed.

The most reactive compound for electrophilic nitration will be

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Benzyl chloride

Benzoic acid

Nitrobenzene

Chlorobenzene

By using the fluted filter paper rate of filtration is

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Increased

Decreased

Filtration is constant

Having no effect

Propyne on hydrolysis is presence of H₂SO₄and HgSO_{4 gives}

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Acetaldehyde

Acetone

Formaldehyde

None

In which of the following elements +1 oxidation state is more stable than +3

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B

Al

ga

Ti

If one litre of air is passed repeatedly over heated copper and magnesium till no further reduction in volume takes place, the volume finally obtained would be approximately

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800mL

200mL

10mL

Zero

Tollen's reagent is

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Ammonical cuprous chloride

Ammonical cuprous oxide

Ammonical silver bromide

Ammonical silver nitrate

White P when boiled with strong solution of caustic soda produces

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Phosphine

Posh acid

Phosphorous acid

None

Hess's law deals with

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Changes in heat or reaction

Rate of reaction

Equilibrium constant

Influence of pressure on volume of a gas.

The rate of reaction between A and B increases by a factor of 100, and when the concentration with respect to A is increased 10 folds, the order of reaction w.r.t. A is

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10

1

4

2

The mass of the neutron is of the order of

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10^-23kg

10^-24kg

10^-26kg

10^-27kg

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

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1000 kg

56 kg

44 kg

100 kg

Which has maximum protein content?

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Ground nut

Cow milk

Egg

Wheat

Which inorganic precipitate acts as semipermeabale membrane?

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Calcium sulphate

Barium oxalate

Nickel phosphate

Copper ferrocyanide

The credit of discovering neutron goes to

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Rutherford

Langmuir

Chadwick

Austen

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