Question # 1

Fluorine does not show positive oxidation states due to the absence of

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d-orbitals

s-orbitals

p-orbitals

None

Chile salt petre is

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NaNO₃

Na₂SO₄

KNO₃

Na₂S₂O₃

Ammonia gas used directly as a fertilizer is injected into the soil at a depth of about

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Two inches

Three inches

Five inches

Six inches

If the solvent is inflammable for heating purpose we use

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Ice bath

Water bath

Wire gauze

Thermostat

Which of the following compounds has the lowest anion to cation size ratio?

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LiF

NaF

CsI

CsF

The dimension of rate constant of a second order reaction involves

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Neither time nor concentration

Only time

Time and concentration

Time and square of concentration

In the equilibrium

N₂ + 3H₂ - 2NH₃ + 22 kcal the formation of ammonia is favoured by

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Increasing the pressure

Increasing the temperature

Decreasing the pressure

Adding ammonia

Portland cement is manufactured by using

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Limestone,clay and sand

Limestone,gypsum and sand

Limestone,gypsum and alumina

Limestone,clay and gypsum

The halide which is not hydrolysed is

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SiCI₄

SiF₄

CCI₄

PbCI₄

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