Question # 1

In Friedal-Craft's alkylation besides AlCl₃the other reactants are

Choose an answer

C6H6 + NH3

C6H6 + CH4

C6H6 + CH3Cl

C6H6 + CH3COCl

The number of atoms contained in 11.2 L of SO₂at S.T.P are

Choose an answer

3/2 x 6.02 x 10²³

2 x 6.02 x 10²³

6.02 x 10²³

4 x 6.02 x 10²³

Which of the following method is most appropriate for the manufacture of methane?

Choose an answer

By reduction of CH2SL2

Wurtz reaction

Liquification of natural gas

None of these

Addition of iron fillings to CuSO₄solution caused precipitation of Cu owing to the

Choose an answer

Reduction of Cu²⁺

Oxidation of Cu²⁺

Reduction of Fe

Reduction of Fe³⁺

Ethanol containing some methanol is called

Choose an answer

Absolute spirit

Rectified spirit

Power alcohol

Methylated spirit

Covalent compounds are soluble in

Choose an answer

Polar solvents

Non-polar solvents

Concentrated acids

All solvents

In cold countries ethylene glycol is added to water in radiators of cars during winter. It results in

Choose an answer

Lowering in b.pt.

Reducing viscity

Reducing specific heat

Lowering in freezing pt.

White lead is

Choose an answer

Basic lead acetate

Acidic lead carbonate

Basic lead carbonate

Basic lead hydroxide

The rate of reaction between A and B increases by a factor of 100, and when the concentration with respect to A is increased 10 folds, the order of reaction w.r.t. A is

Choose an answer

10

1

4

2

Each of following is true of white and red phosphours except that they

Choose an answer

Are both soluble in CS₂

Can be oxidized by heating in air

Consist of the same kind of atoms

Can be converted into one another

A zero order reaction is one whose rate is independent of

Choose an answer

Temperature of the reaction

The concentration of the reactants

The concentration of the products

The material of the vessel in which the reaction is carried out

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

Choose an answer

D.I.Khan

Haripur

Nowshera

Dargai

The heat evolved in combustion of rhombic and monoclinic sulphur are -70960 and -71030 cal mol^-1respectively. What will be heat of conversion of rhombic sulphur to monoclinic?

Choose an answer

70960 calories

71030 calories

-70 calories

+70 calories

Which for the following has greatest reducing power?

Choose an answer

Hl

HBr

HCl

Hl

Acid rains are produced by

Choose an answer

Excess NO₂ and SO₂from burning fossil fuels

Excess production of NH₃ by industry and coal gas

Excess release of carbon monoxide by incomplete combustion

Excess formation of CO₂ by combustion and animal respiration

As a fixing agent in photography, sodium thisoulphate is used for

Choose an answer

Dissolving out unreacted silver bromide

Converting silver halides to metallic silver

Reducing solubility of AgBr

Preventing overdeveloping and fogging.

More Classes

Other Links

NAT II Physical Science Chemistry MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer