Question # 1

The Electro-negatively difference for ionic bond must be greater than

Choose an answer

1.6

1.7

1.8

1.0

In a group, the ionization energy

Choose an answer

Increase

Decreases

Remain constant

First increases then decreases

Dehydration of ethyl alcohol yields

Choose an answer

Aldehyde

Ketone

Acid

Alkene

The weight of pure NaOH required to prepare 250 cm³of 0.1 N solution is

Choose an answer

4 g

1 g

2 g

5 g

Which of the following has highest oxidation potential

Choose an answer

Be

Li

Na

Ca

Choose an answer

0 dm³

3 dm³

2 dm³

3 dm³

The widely used nitrogen fertilizer that contains about 46% nitrogen is

Choose an answer

Ammonia

Ammonium nitrate

Ammonium sulphate

Urea

Transition elements have valence electrons in

Choose an answer

s-orbital

p-orbital

d-orbital

f-orbital

Enzymes catalyse all biological reactions occurring in the cell. What is true about an enzyme

Choose an answer

Enzyme is a small molecule

Enzyme is acidic in nature

Enzyme is a protein

Enzyme is a lipid

Homogenous catalysis is that in which catalyst and reactants are in same phase. Which one of the following reaction is a homogenous catalysis

Choose an answer

The rate of reaction :

Choose an answer

Decreases as the reaction proceeds

Increases as the reaction proceeds

May decrease or increase reaction proceeds

Remains same as the reaction proceeds

The relative lowering of vapour pressure is equal to the mole fraction of the solute, This law is called

Choose an answer

Henry's law

Raoult's law

Ostwald's law

Arrhenius law

The nature of the positive rays depend on

Choose an answer

The nature of the electrode

The nature of the discharge tube

The nature of the residual gas

All of the above

The total number of possible values of magnetic quantum number for the value of l=3 is

Choose an answer

3

1

5

7

The method used only for the production of symmetrical alkanes

Choose an answer

Kolb's method

Clemmenen

Cannizzaro

Wolf kishner

The tendency of an atom to attract shared electron pair towards itself is called

Choose an answer

Covelent bond

Electronegativity

Ionization potential

Electronic affinity

Alkene general formula :

Choose an answer

C_nH_2n+2

C_nH_2n

C_nH_2n-2

C_nH_2n+1

A compound X contains 50% sulphur and 50% oxygen by mass. What is the empirical formula of compound X?

Choose an answer

SO

SO₂

SO₃

SO₄

During the mechanism of aldol condensation a/an ______ is formed

Choose an answer

Oxide

Alkali

Alkoxide ion

None of these

Number of isomers of butane are:

Choose an answer

One

Two

Three

Four

Linear shape is associated with set of hybrid orbitals?

Choose an answer

sp

sp2

sp3

dsp2

In carboxyl group the bond between C and oxygen is:

Choose an answer

Sigma bond

Single bond

Double Bond

Triple bond

The energy of ionization of an atom is the energy difference between orbital

Choose an answer

Which of the following is a characteristic of a reversible reaction?

Choose an answer

It never proceeds to completion

It can be influenced by a catalyst

It proceeds only in the forward direction

Number of moles of reactants and products are equal

The fibre which contains polymers of vinylidine chloride as fibre forming substance is known as

Choose an answer

Saran fibre

Nylon

Polyester

Acetate fibre

The energy of the first electron is helium will be

Choose an answer

-13.6 eV

-54.4 eV

-5.44 eV

zero

Which of these polymers is an addition polymer?

Choose an answer

Nylon-6,6

Polystrene

Terylene

Epoxy resin

Choose an answer

It decolourises aqueous bromine rapidly

It is insoluble in water

It reduces Fehling's reagent

Two molecules react with each other in the presence of a strong acid

A solutiion of 0.5 mole camphor in 100 grmas chloroform (K_b= 0.322) has rise in boiling point than that of chloroform by

Choose an answer

0.81°C

1.61°C

1.81°C

0.61°C

Turnbull's blue is a compound called?

Choose an answer

Ferricyanide

Ferrous ferricyanide

Ferrous cyanide

Ferri - Ferro cyanide

Which is liquid among the following alkenes?

Choose an answer

Ethane

Propene

Butene

Pentene

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