Question # 1

Magnesium keeps on burning in

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N₂

CO₂

N₂O

N₂ as well as CO₂

When pressure is applied to the equilibrium system Ice Water Which of the following phenomenon will happen?

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More ice will be formed

Water will evaporate

More water will be formed

Equilibrium will not be formed

When electrons revolve is stationary orbits

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There is no change in energy level

They vecome stationary

They are gaining kinetic energy

There is increase in energy

Octane number can be changed by

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Isomerisation

Alkylation

Cyclisation

All of these

Which of the following process is used to separate insoluble particles from liquids?

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Separation

Filtration

Crystallization

Condensation

According to MO Theory the species O⁺₂ possesses

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Bond order of 2.5

Three unpaired electrons

Diamagnetic character

Stability lower then O₂

Which of the following elements is most electronegative?

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Oxygen

Chlorine

Nitrogen

Fluorine

Which of the following substances is used as an antiknock compound?

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Tetraethyl lead

Lead tetrachloride

Lead acetate

Ethyl acetate

The number of unpaired electrons in the P-subshell of oxygen atom

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1

2

3

4

The order of reactivity of halogens in aliphatic substitution reactions is

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Br2 > CI2 > F2

CI2 > Br2 > F2

CI2 CI2 > Br2

F2 > Br2 > CI2

The vapour density of a gas is 11.2 The volume occupied by 11.2 g of this gas at N.T.P is

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22.4 liters

11.2 liters

1 liter

2.24 liters

Which of the following species participate in sulphonation of benzene ring?

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H₂SO₄

HSO^-₃

SO₃

SO^-₂

Which has largest radius?

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CO³⁺

Mn³⁺

Fe³⁺

Cr³⁺

One mole of gas refers to

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The number of molecules in one litre of gas

The number of molecules in one gram of gas

The number of molecules contained in 12 grams of ¹²C isotope

The number of molecules in 22.4 litres of a gas at S.T.P.

The weight of 11.2 litres of CO₂at S.T.P. would be

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88 g

44 g

32 g

22 g

Bond angle is minimum for

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H₂O

H₂S

H₂Se

H₂Te

Ascorbic acid is chemical name of

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Vitamin D

Vitamin A

Vitamin C

Vitamin B6

The most reactive compound for electrophilic nitration will be

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Benzyl chloride

Benzoic acid

Nitrobenzene

Chlorobenzene

Minamata disease is due to pollution of

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Organic waste

Oil spill in water

Industrial waste containing mercury into fishing water

Arsenic into the atmosphere

Which of the following nitrogen fertilizer contain more nitrogen

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NaNO₃

KNO₃

NH₄NO₃

Urea

Which of the following alkali metal hydroxides is the strongest base?

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LiOH

NaOH

KOH

CsOH

Magnesium keeps on burning in

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N₂

CO₂

N₂O

N₂as well as CO₂

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