Question # 1

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

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LiOH

NaOH

KOH

CaOH

Calcium cyanamide on treatment with steam under pressure gives NH₃ and

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Calcium carbonate

Calcium hydroxide

Calcium oxide

Calcium bicarbonate

The last orbit of argon would have electrons

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8

18

2

6

Acetic anhydride is obtained form acetyl chloride by the reaction of

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P₂O₅

H₂SO₄

CH₃COONa

CH₃COCH₃

In the manufacture of iron from haematite,limestone is added to act as.

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Flux

A reducing

Slag

An oxidizing agent.

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 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

Setting of cement is an

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Exothermic reaction

Endothermic reaction

Neither exothermic nor endothermic

None

Ethyl chloride on treatment with aqueous alkali gives

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Ethane

Ethene

Ethanal

Ethanol

Detergents are

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Synthetic products

Natural products

Both A and B

None of the above

The valence orbital configuration of an element with atomic number 23 is

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3d⁵

3d³, 4s²

3d³,4s¹,4p¹

3d²,4s²,4p¹

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