Question # 1

Choose an answer

Ethanol in the presence of concentrated sulphuric acid

Potassium hydroxide

Sodium

Sodium carbonate

The addition of unsymmetrical reagent to unsymmetrical alkene is in accordance with the rule:

Choose an answer

Hund's rule

Markownikov's rule

Pauli's Exclusion Principle

Auf bau Principle

The number of atoms or molecules whose concentrations determine the rate of the reaction is called

Choose an answer

Molecularity

Order

Rate of reaction

Rate constant

Which of the followingα-Amino acids has basic R-group

Choose an answer

Proline

Glutamic acid

Histidine

Valine

When during electrolysis of a solution of AgNO₃, 9650 coulombs of charge pass through the electroplating bath, the mass of silver deposited on the cathode will be

Choose an answer

1.08 g

10.8 g

21.6 g

108 g

In CH₄, all the H-C-H bond angles are

Choose an answer

120°

107°

109°

109.5°

Turnbull's blue is a compound called?

Choose an answer

Ferricyanide

Ferrous ferricyanide

Ferrous cyanide

Ferri - Ferro cyanide

The reaction in which ketone is reduced to the alkane is called

Choose an answer

Kolb

Clemmensen

Cannizzaro

None

When ethyl iodide and n-propyl iodide are allowed to react with sodium metal in ether, the number of alkanes that could be produced is

Choose an answer

Only one

Two alkanes

Three alkanes

Four alkanes

The percentage of carbon in different types of iron products is in the order of

Choose an answer

Cast iron > wrought iron > steel

Wrought iron > steel > cast iron

Cast iron > steel > wrought iron

Cast iron = steel > wrought iron

The wave number of the light emitted by a certain source is 2 x 10⁶m^-1. The wavelength of this light will be

Choose an answer

500 nm

500 m

200 nm

5 x 10⁷m

Choose an answer

Forward reaction is favoured

Backward reaction is favoured

No effect

None of the above

Coinage metals like Au, Pt, Ag and Cu are the least reactive metals and don't liberate H₂gas when treated with acids because

Choose an answer

These have very high positive values of reduction potentials

These have very high negative values of reduction potentials

Their ionization potentials are lowest

Their reduction potentials are close to SHE

The rate of which the reaction proceeds is directly proportional to the product of the active masses of the reactants is according to

Choose an answer

Law of mass action

Le Chateliers principle

Equilibrium law

Law of constant proportion

The atom of an element is

Choose an answer

The smallest particle

The fundamental particle

The independent particle

The charged particle

Identify the incorrect statement with respect to ozone

Choose an answer

Ozone is formed in the upper atmosphere by a photochemical reaction involving dioxygen

Ozone is more reactive than diaoxygen

Ozone is diamagnetic whereas dioxygen is paramagnetic

Ozone protects the earth's inhabitants by absorbing gamma-radiations

1.0 g pure calcium carbonate was found to require 50 ml of dilute HCl for complete reaction. The strength of HCl solution is given by

Choose an answer

4 N

2 N

0.4 N

0.2 N

In Millikan method the oil droplet falls under the force of gravity but it moves upward due to

Choose an answer

Electric field

Magnetic field

Incident light

X-rays

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Choose an answer

Uninfluenced by occurrence of thuderstorm

Which depends on the amount of dust in air

Slightly lower than that of rain water without thunderstorm

Slighlty higher than that when the thunderstom is not there

An element in +3 oxidation state has the electronic configuration (Ar) 3d³. Its atomic number is

Choose an answer

24

23

22

21

SnCI₂have ______ shape

Choose an answer

Planner

Tetrahedral

Angular

None

HCOOH reacts with conc. H₂SO₄to produce

Choose an answer

CO

CO₂

NO

NO₂

If a salt bridge is removed between the two half cells, the voltage

Choose an answer

Drops to zero

Does not change

Increases gradually

Increases rapidly

Alkyle halides can be prepared by treating halogen acids with

Choose an answer

Ethane

Ethanol

Ethene and ethanol

Aldehyde

Which of the following element has the maximum electron affinity?

Choose an answer

F

S

I

Cl

Steps in SN , reactions are:

Choose an answer

One

Two

Three

Four

Among the alkaline earth metals the element forming predominantly covalent compounds is

Choose an answer

Be

Mg

Sr

calcium

Alcohols are named by replacing 'e' of alkane with:

Choose an answer

al

ene

ol

one

______ reacts with alkalis to give hydrogen

Choose an answer

Be

Mg

Ca

None

Variable valency is generally exhibited by

Choose an answer

Normal elements

Transition elements

Metallic elements

None of these

The sample being analyzed is called :

Choose an answer

Electrolyte.

Substance.

Analyte.

All of above.

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