Question # 1

The total pressure exerted by a number of non reacting gases is equal to the sum of partial pressure of the gases under the same conditions is known as

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Boyle's law

Charle's law

Avogadro's law

Dalton's law

The carbon atoms in calcium carbide are held by

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Ionic bonds

2 sigma bonds

2 covalent one co-ordinate bond

2 π and one σ bond

Carbon atom holding halogen in aryl halides is

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Sp²-hybridesed

Sp³-hybridesed

Sp-hybridesed

Sp³d -hybridesed

Which of the following units represents largest amount of energy?

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Calorie

Joule

Erg

Electron vol.

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

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Tetraethyl lead

Lead tetrachloride

Lead acetate

Ethyl acetate

1 mole of CH₄ contains

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6.02 x 10²³ atoms of H

4 g-atom of hydrogen

1.81 x 1023 molecules of CH₄

3.0 g of carbon

Alum is not used

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As a mordant in dyeing

As an insecticide

In purification of water

In tanning of leather

Acetic anhydride is obtained form acetyl chloride by the reaction of

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P₂O₅

H₂SO₄

CH₃COONa

CH₃COCH₃

The bond angle H - O - H in ice is closest to

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120° , 28°

60°

90°

109°

All the naturally occurring processes proceed spontaneously in a direction which lead to

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Decrease of entropy

Increase of enthalpy

Increase of free energy

Decrease of free energy

Which of the following has linear shape?

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SP

SP²

SP³

None of the above

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