Question # 1

Which of the following has linear shape?

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SP

SP²

SP³

None of the above

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 litres

11.2 litres

1 litre

2.24 litres

Atmosphere of big/metropolitan cities is polluted most by

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Automobile exhausts

Pesticide residue

Household waste

Radio-active fall out

Potassium crystallizes with a

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Orthogonal lattice

Cubic lattice

Triclinic

Ortho rhombic lattice

Evaporation of water is

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An exothermic change

an endothermic change

A process where no heat changes occur

A process accompanied by chemical reaction.

Ethyl alcohol is industrially prepare from ethylene by

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Permanganate oxidation

Catalytic reduction

Absorbing in H₂SO₄followed by hydrolysis

Fermentation

Crystal can be classified in to -------------- basic crystal habits

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7

3

14

3

Which has maximum protein content?

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Ground nut

Cow milk

Egg

Wheat

Given below are some statements concerning formic acid, which of them is true?

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It is a weaker acid than acetic

it is a reducing agent

When its calcium salt is heated, it forms a ketone

It is an oxidizing agent

Carbon atom holding halogen in aryl halides is

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sp²-hybridesed

sp³-hybridesed

sp-hybridesed

sp³d-hybridesed

Which of the following value ofΔHf represent that product is least stable?

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-94.0 kcal mol^-1

-231.6 kcal mol^-1

+21.4 kcal mol^-1

+64.8 kcal mol^-1

Sodium metal cannot be stored under

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Benzene

Kerosene oil

Alcohol

Toluene

Which of the following halogens does not form its oxyacids?

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F

Cl

Br

I

Which has largest first ionization energy?

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Li

Na

K

Rb

The rotation of two carbon atoms joined by double bond would happened only if

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P_ibond is broken

Sigma bond is broken

Both bonds are broken

None of above

The disaccharide present in milk is

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Sucrose

Maltose

Lactose

Cellobiose

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