Question # 1

Which of the following is directly related to Qualitative analysis?

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Identification

Separation

Measurement

Calculation

At 500 K the equilibrium constant for reaction cis-C₂H₂CI₂ trans-C₂H₂CI₂ is 0.6. At the same temperature the equilibrium constant for the reaction trans-C₂H₂CI₂ cis-C₂H₂CI₂ will be

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0.60

1.67

0.66

2.6

The equilibrium constant in a reversible chemical reaction at a given temperature

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Depends on the initial concentration of the reactants

Depends on the concentration of one of the products at equilibrium

Does not depend on the initial concentrations of recatants

Is not characteristic of the reaction

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

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Flux

A reducing

Slag

An oxidizing agent.

The number of atoms contained in 11.2 L of SO₂ at S.T.P are

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3/2 x 6.02 x 10²³

2 x 6.02 x 10²³

6.02 x 10²³

4 x 6.02 x 10²³

Salol is prepared from

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Salicylic acid and phenol

Salicylic acid and methyl alcohol

Both

None

The maximum number of electrons in a subshell for which / = 3 is

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14

10

8

4

Tollen's reagent is

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Ammonical cuprous chloride

Ammonical cuprous oxide

Ammonical silver bromide

Ammonical silver nitrate

When sulphur is boiled with Na₂SO₃solution the compound formed is

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Sodium sulphides

Sodium sulphates

Sodium persulphate

Sodium thiosulphate

BiCI₃ on hydrolysis forms a white precipitate of

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Bismuthio is acid

Bismuth oxychloride

Bismuth pentachloride

Bismuth hydroxide

Which of the following is different from the other three oxides?

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MgO

SnO

ZnO

Cr₂O₃

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