Question # 1

Salol is prepared from

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Salicyclic acid and phenol

Salicyclic acid and methyl alcohol.

Both

None

Which has maximum protein content?

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Ground nut

Cow milk

Egg

Wheat

Which one of the following elements occurs free in nature?

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N

P

As

Sb

Which of the following is directly related to Qualitative analysis?

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Identification

Separation

Measurement

Calculation

Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBh₄or LiAH₄?

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1-Propanol

2-Propanol

2-Methyl2-Proponal

Ethanol.

Hybridization explain the ----------- of orbitals

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Type of Bonding

Shapes

Shape and Type of bonding

None of above

Galena is an ore of

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Gallium

Lead

Tin

Germanium

A solution of sodium sulphate was electrolysed using some inert electrodes. The products at the electrodes are

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O_2,H₂

O_2,Na

O_2,SO₂

O_2,S_2O^2-₈

The movement of solvent molecules through a semipermeable membrane is called

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Electrolysis

Electrophoresis

Osmosis

Cataphoresis

Reaction of ethylamine with chloroform in alcoholic KOH produces

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CH₃OH

CH₃NC

C₂H₅NC

C₂H₅CN

Which is true for an element R present in group 13 of the periodic table?

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It is a gas at room temperature

It has oxidation state of +4

It forms R₂O₃

It forms RX₂

Gooch crucible is used for the filtration of precipitates having

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High Solubility

High concentration

High ignition temperature

Low Temperature

Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBH₄or LiAIH₄?

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1-Propanol

2-Propanol

2-Methyl-2-propanol

Ethanol

Carbon atom holding halogen in aryl halides is

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sp²-hybridesed

sp³-hybridesed

sp-hybridesed

sp³d-hybridesed

Cyclone collector is used for minimizing

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Radioactive pollution

Air pollution

Noise pollution

Water pollution

A cell constant is generally found by measuring the conductivity of aqueous solution of

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BaCl₂

KCl

NaCl

MgCl₂

When quantity of electricity passed is one faraday then the mass deposited at the electrode is equal to

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One gm. atomic weight

One gm. equivalent weight

Electrochemical equivalent

None of the above

By using the fluted filter paper rate of filtration is

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Increased

Decreased

Filtration is constant

Having no effect

The molal elevation constant is the ratio of the elevation in boiling point to

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Mojarity

Molality

Mole fraction of solute

Mole fraction of solvent

An electrolyte

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Forms complex ions in solution

Gives ions only when electricity is passed

Possesses ions even in solid state

Gives ions only when dissolved in water

In N.W.F.P the phosphate fertilizers are produced at

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D.I.Khan

Haripur

Nowshera

Dargai

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