Question # 1

Generally the bond formed by metals with non-metals is

Choose an answer

Ionic

Covalent

Polar

Non- polar

The electronegativeities of F,Cl,Br and I are 4.0,3.0,2.8,2.5 respectively.Hydrogen halide with a high percentage of ionic character is

Choose an answer

HF

HCL

HBr

HI

Choose an answer

N₂O₄is limiting reactant

N₂H₄is the limiting reactant

Reactants are completely converted to the products

Reactions is reversible

When a carbon atom forms single bonds with other carbon atoms, these hybrid orbitals overlap with the orbitals of hydrogen to form four bonds which are

Choose an answer

Three sigma and one P_i

Two sigma and two P_i

One sigma and three P_i

sigma

Which is a reagent for Lucas test

Choose an answer

ZnCl₂+ Conc. HCl

Zn

Na

Br

Which of the following statements is true about Galvanic cell

Choose an answer

Anode is negatively charged

Reduction occurs at anode

Cathode is positively charge

Reduction occurs at cathode

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

Choose an answer

Hypophosphorus acid

Orthophosphorus acid

Pyrophosphorus acid

Metaphosphorus acid

Formula of chloroform is

Choose an answer

CH₃CI

CCI₄

CH₂CI₂

CHCI₃

What is the total number of different chloroethanes of formula C₂H_6-nCl_npossible (n may be 1 to 6)

Choose an answer

6

8

9

10

The ionic strength of a solution containing 0.1 mole/kg of KCl and 0.2 mole/kg of CuSO₄is

Choose an answer

0.3

0.6

0.9

0.2

Heat,. work and internal energy of the system and surroundings are related into an equation which is called

Choose an answer

First law of thermodynamics

Hess's law

Henry's law

Born-haber cycle

Which statement is incorrect about standard hydrogen electrode

Choose an answer

Its oxidation and reduction potential is zero

It consists of Pt wire dipped on 1 molar HCI solution

The electrolyte is 1 molar NaOH solution

H₂gas is passes in it at 1 atmospheric pressure

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

Choose an answer

O₂, H₂

O₂, Na

O₂, SO₂

O₂, S₂O₈²

In exothermic reversible reaction increase in temperature shift the equilibrium to :

Choose an answer

Remains unchanged.

Product side.

Reactant side.

None of above.

Which has highest 1st I.E.

Choose an answer

Br

Cl

F

l

Grignard's reagent on treatment with dry CO₂and HCI yields

Choose an answer

Ester

Alcohol

Carboxylic acid

Aldehyde

The coinage metals are

Choose an answer

Ni, Pd, Pt

Cu, Ag, Au

Zn, Al, Pb

Fe, Si, Sn

Alcohols of low molecular weight are

Choose an answer

Soluble in water

Soluble in water on heating

Insoluble in water

Insoluble in all solvents

To prepare ethanol by fernentation the optimum temp. is

Choose an answer

10 - 20°C

25 - 30°C

20°C

35°C

Choose an answer

Electronphilic substitution

Electrophilic addition

Free radical substitution

Nuclephilic substitution

Terylene is madeby polymerization of terephthalic acid with

Choose an answer

Ethylene glycol

Phenol

Ethanol

Catechol

The wave length of visible light is 500 nm. In S.I. unit this value is

Choose an answer

5 x 10^-8m

5 x 10^-9m

500 x 10^-7m

500 x 10^-9m

The open chain organic compounds are called

Choose an answer

Linear compounds

Aromatic

Aliphatic

Both A and B

Which of the following is lighter

Choose an answer

Li

k

Na

Ca

Which one of the followings is a heterocyclic compound

Choose an answer

Cyclohexanol

Phenol

Pyridine

Anthracene

Tetraethyle lead causes disease:

Choose an answer

Typhoid

Respiratory

Stomach

Muscular

Polyanion formation is maximum in

Choose an answer

Nitrogen

Oxygen

Sulphur

Boron

Law of mass action was given by :

Choose an answer

Guldberg and Waage.

Berkeley and Hartly.

Ramsay and Reyleigh.

Berthelot.

Orlon is a polymer of

Choose an answer

Tetrafluoroethylene

Acrylonitrile

Ethanoic acid

Benzene

Solvent extraction method is a particularly useful technique of separation when the product to be separated is:

Choose an answer

non-volatile or thermally unstable.

volatile or thermally stable.

non-volatile or thermally stable.

volatile or thermally unstable.

The element with atomic number 26 will be found in group

Choose an answer

2

8

6

10

More Classes

Other Links

ECAT Chemistry 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