Question # 1

At room temperature formaldehyde is

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Gas

Liquid

Solid

None of the above

In Friedal-Craft's alkylation besides AICI3 the other reactants are

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C6H6 + NH3

C6H6 + CH4

C6H6 + CH3CI

C6H6 + CH3COCI

The formula of nitre is

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KNO₃

NaNO₃

NaCI

Na₂CO₃

Which has the largest radius?

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CO³⁺

Mn³⁺

Fe³⁺

Cr³⁺

Which one is primary alcohol?

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Buten-2-oI

Propan-2-oI

Butane-1-oI

2,3-Dimethylhexane-4-oI

An exothermic reaction is one in which the reacting substances

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Have more energy than the products

Have less energy than the products

Have the same energy as the products

Are at a higher temperature than the products

Cyclone collector is used for minimizing

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Radioactive pollution

Air pollution

Noise pollution

Water pollution

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

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

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