Question # 1

Which of the following statements is most appropriate about effective nuclear charge? It depends upon

Choose an answer

The shielding constant

The atomic number

The charge on the nucleus

Both the nuclear charge and the shielding

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

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

Choose an answer

Mojarity

Molality

Mole fraction of solute

Mole fraction of solvent

Red P can be obtained from white P by

Choose an answer

Heating it with a catalyst in an inert atmosphere

Distilling it in an inert atmosphere

Dissolving it in CS₂and crystallzing

Melting it and pouring the liquid into water

Rusting of iron is catalysed by

Choose an answer

Fe

O₂

Zn

H⁺

Minamata disease is due to pollution of

Choose an answer

Organic waste

Oil spill in water

Industrial waste containing mercury into fishing water

Arsenic into the atmosphere

For the carbylamine reaction we need hot alc. KOH and

Choose an answer

Any amin and chloroform

Chloroform and Ag powder

A primary amine and chloroform

A mono alkyl amine and trichlorom-ethane

Saturated solution of NaCl on heating becomes

Choose an answer

Super saturated

Unsaturated

Remains saturated

None

Which of the following units represents largest amount of energy?

Choose an answer

Calorie

Joule

Erg

Electron vol.

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

Choose an answer

1-Propanol

2-Propanol

2-Methyl-2-propanol

Ethanol

The alkali metal which is liquid at 15°C is

Choose an answer

K

Cs

Na

None

Outermost shells of two elements X and Y have two and six electrons respectively. If they combine, the expected formula of compound will be

Choose an answer

XY

X₂Y

X₂Y₃

XY₂

Carbon monoxide is pollutant as it

Choose an answer

Inactivates nerves

Inhibits glycolysis

Combines with oxygen

Combines with hemoglobin

The last orbit of argon would have electrons

Choose an answer

8

18

2

6

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.

Ethyl chloride on treatment with aqueous alkali gives

Choose an answer

Ethane

Ethene

Ethanal

Ethanol

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