Question # 1

Which of the following is not the required condition for the formation of smog

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Sufficient NO

Sunlight

Less movement of air

Winds

Types of bonds between C terminal and N terminal is

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Covalent

Disulphide bond

Peptide

Ionic

In gasses and liquid, temperature is the measure of:

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Average transnational kinetic energies of molecules.

Average vibrational kinetic energies of molecules.

Average rotational kinetic energies of molecules.

None of above.

Lanthanides an actinides belong to following group of periodic table:

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IB

VIIIB

IIB

IIIB

Acetic acid is obtained from:

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Red out

Vinegar

Butter

Milk

The elements for which the value of ionization energy is low can

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Gain electrons readily

Lose electron less readily

Gain electrons with difficulty

Lose electron readily

Which pair gives same dehydrohalogenation product

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I-Chlorobutane, 2-Chlorobutane

I-Chloropropane, 2-Chloropropane

I-Bromopentane. 3-Bromopentane

iso-butvl chloride. 2°- butyl chloride

Which one of the following is used as coagulant for purification potable water:

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copper sulphate

alum

barium

nicket sulphate

Carboxylic acid is given name by replacing "a" of alkane by:

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"oic" acid

"one"

"al"

"ol"

Which woody raw material is used for the manufacture of paper pulp?

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cotton

bugases

poplar

rice straw

Water exist in only

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One state

Two state

Three states

4 states

The most commonly and widely used nitrogen fertilizer in Pakistan is

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Urea

Ammonium nitrate

Ammonium sulphate

Ammonium chloride

Alkyl halides ae considered to be very reactive compounds towards nucleophiles because

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They have an electrophilic carbon

They have an electrophilic carbon and a good leaving group

They have an electrophilic carbon and a bad leaving group

They have a nucleophilic carbon and a good leaving group

Micro-nutrients are required in quantity ranging from

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4g-40g

6g-200g

6Kg-200Kg

4Kg-40Kg

Which three elements are needed for the healthy growth of plants

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N, S, P

N, Ca, P

N, P, K

N, K, C

NaHCO₃is prepared by

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Down's process

Solvay's process

Nelson's process

None of these

In molecules kinetic and potential energies are:

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Definite

Moderate

Indefinite

None of above

The number of antibonding electron pairs in O^2-molecular ion on the basis of MOT is

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4

3

2

5

The solubility product of AgCl is 2.0 x 10^-10mol²dm^-6The maximum concentration of Ag⁺ions in the solution is

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2.0 x 10^-10mol dm^-3

1.41 x 10^-5mol dm^-3

1.0 x 10^-10mol dm^-3

4.0 x 10^-20mol dm^-3

A carboxylic acid with one caboxyl group:

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Monocarboxylic acid

Dicarboxylic acid

Tricarboxylic acid

Polycarboxylic acid

When rate of forward reaction is equal to rate of backward reaction, then the equilibrium established is called

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Chemical equilibrium

Static equilibrium

Dynamic equilibrium

None of these

In Lucas test teriary alcohol make an oily layer

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Immediately

In 10 mins

On heating

Not

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