Question # 1

Polyanion formation is maximum in

Choose an answer

Nitrogen

Oxygen

Sulphur

Boron

The maximum number of electrons in the outermost shall of s-black elements is

Choose an answer

One

Two

Three

Four

When ammonia is heated with cupric oxide, a molecule of ammonia will

Choose an answer

Gain 3 electrons

Lose 3 electrons

Gain 2 electrons

Lose 2 electrons

Commercial common salt becomes slight damp on storing because

Choose an answer

Common salt is hygroscope

Common salt contains some impurity, which is hygroscopic

Salt in efflorescent

Salt is crystalline

Which of the following is the hardest metal among following

Choose an answer

Li

Na

Rb

K

Which salt is used for the treatment of hyperacidity in stomach

Choose an answer

NaCl

KCl

NaHCO₃

Na₂CO₃

Which of the following sulphates has the highest solubility in water

Choose an answer

BaSO₄

CaSO₄

MgSO₄

BeSO₄

Which of the following compound is industrially prepared by the electrolysis of solution of NaCl

Choose an answer

Na₂CO₃

NaHCO3

NaOH

NaOCl

Silicon atom is hybridized:

Choose an answer

sp

sp²

sp³

dsp²

Each of the 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

Permonosulphuric acid is known as

Choose an answer

Marshall's acid

Carlo's acid

Sulphuric acid

None of these

Tincal is a mineral of:

Choose an answer

Al

B

Si

C

Which one of the following equations represent the reaction that occurs when calcium nitrate is heated strongly

Choose an answer

Orthophosphoric acid is

Choose an answer

Monobasic

Dibasic

Tribasic

Tetrabasic

The element which has a simple cubic lattice in solid state is

Choose an answer

Se

Te

Po

None of these

Electron affinity of sulphur is

Choose an answer

More than O and Se

More than O but less than Se

Less than O but more than Se

Equal to O and Se

On alkali and alkaline earth metals down the group, there is decreasing trend in

Choose an answer

m.p.

b.p.

Ionization potentiall

All of these

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

Choose an answer

Dissolving out unreacted silver bromide

Converting silver

Reducing solubility of AgBr

Preventing overdeveloping and fogging

The oxidation number of each element of group ll-A is

Choose an answer

0

+1

+2

-1

LiOH ______ soluble than NaOH

Choose an answer

More soluble

Less soluble

Equally soluble

None

Red P can be obtained form 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 crysllizing

Melting it ad pouring the liquid into water

The structure of white phosphorus is

Choose an answer

Square planar

Pyramidal

Tetrahedral

Trigonal planer

Alkaline earth metals are usually

Choose an answer

Reducing agent

Oxidizing agent

Amphoteric

Acidic

Which of the following elements is most metallic?

Choose an answer

P

As

Sb

Bi

Heavy water is obtained by

Choose an answer

Prolonged electrolysis of water

Dissolving heavy salt in water

Simple distillation of water

Removing impurities of calcium and magnesium form water

The oxyacids of phosphorus in which phosphorus has the lowest oxidiation state is

Choose an answer

Hypophosphorus acid

Orthophosphorus acid

Pyrophosphorus acid

Metaphosphorus acid

When a colourless gas is passed through bromine water only decolourisation takes place the gas is

Choose an answer

SO₂

HBR

HCl

H₂S

Which of the following salt is used as purgative

Choose an answer

CaSO₄

MgSO₄

BeSO₄

NaCl

Chemical composition of colemnite is:

Choose an answer

Ca₂B₆O₁₁.5H₂O

CaB₄O₇ .4 H₂O

Na₂B₇O₇. 4 H₂O

CaNaB₅O₉.8H₂O

Which of the following salt is soluble in water

Choose an answer

CaCO₃

CaSO₄

MgSO₄

BaSO₄

Oleum is

Choose an answer

Castor oil

Oil of vitriol

Fuming of H₂SO₄

None of them

More Classes

Other Links

ECAT Chemistry Chapter 14 Group IIIA & IVA Elements Online Test 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

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