Question # 1

Which of the following is the most suitable method for removing the traces of water from ethanol?

Choose an answer

Reacting with Na metal

Passing dry HCl through it

Distilling it

Reacting with Mg

Atoms can be evident by use of electron microscope, field ionization microscope and:

Choose an answer

x-rays

Video camera

Telescope

Compound microscope

If the value of azimuthal quantum number is 3, then values of m the magnetic quantum no. will be

Choose an answer

0, 1, 2, 3

+3, +2, +1, -1, -2, -3

0, -1, -2 ,-3

-3, 0, +3

When acetamide reacts with Br₂and caustic soda, then we get

Choose an answer

Acetic acid

Bromoacetic acid

Methyl amine

Ethylamine

The filtration process is used to separate solid from:

Choose an answer

Liquid

Gas

Solid

All of above

Grignard reagent is prepared by the reaction of magnesium metal with alkyl halide in the presence of

Choose an answer

Alcohol

Water

Suephuric acid

Dry ether

Reaction of ethanes with KMnO₄gives:

Choose an answer

Ozonide

Glyoxal

Glycol

Oxalic acid

The gasoline having octane No. 100 has ______

Choose an answer

More knocking

Less knocking

No knocking

Only knocking

Choose an answer

Br_2(aq)

2, 4-dinitrophenylhydrazine

NaBH

Tollen's reagent

Compounds having same molecular formula but different structures are said to be

Choose an answer

Monomers

Isomers

Metamers

Tautomers

Which of the following is produced when an aqueous solution of butan-2-ol is refluxed with dil acidified KMnO₄

Choose an answer

Butanol

Butanoic acid

Butanone

Butane

Generally electron affinities for elements in a period from left to right

Choose an answer

Decreases

Increases

Remain same

Increases alternatively

Coal is used to bake bricks in lime kiln:

Choose an answer

40%

60%

80%

None of these

Grignard's reagent is

Choose an answer

Alkyl halide

Magnesium halide

Alkyl magnesium halide

Ethereal solution of an alkyl halide

The state of equilibrium refers to

Choose an answer

State of rest

Dynamic state

Stationary state

State of inertness

A polymeric substance that is formed in the liquid state and then hardened to a rigid solid is called a:

Choose an answer

Fiber

Plastic

Vanish

Polyamide resin

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

Choose an answer

SO₂

HBR

HCl

H₂S

Electrochemistry is concerned with the conversion of electrical energy into chemical energy in :

Choose an answer

Galvanic cell

Electrolytic cell

Voltaic cell

Both (a) and (c)

Transition metals mostly are

Choose an answer

Diamagnetic

Paramagnetic

Neither diamagnetic nor paramagnetic

Both diamagnetic and paramagnetic

An element of the third period (Na to S) is heated in chlorine. The product is purified and then added to water. The resulting solution is found to be neutral. What is the element

Choose an answer

Sodium

Aluminium

Silicon

Phosphorus

Which of the following is a molecular diseases?

Choose an answer

Allergy

Cancer

German measles

Sickle cell anemia

How many alcohol (including both structural isomers and stereoisomers) can have the molecular formula C₄H₁₀O

Choose an answer

3

4

5

6

IIB elements (Zn, Cd, Hg) and III B elements (Sc, Y and La) are

Choose an answer

Non typical transition element

Typical transition element

Normal elements

Inner transition element

Alkanes normally have ______ hybridization

Choose an answer

Sp

Sp²

Sp³

d sp³

Which halide among the following is used as methylating agent?

Choose an answer

CH₃l

C₂H₅Cl

C₂H₅Br

C₆H₅Cl

The open chain organic compounds are called

Choose an answer

Linear compounds

Aromatic

Aliphatic

Both A and B

The number of electrons in the M shell of the element with atomic number 24 is

Choose an answer

24

12

13

8

In the manufacture of iron from haematitie,limestone is added to act as

Choose an answer

Flux

A reducing agent

Slag

An oxidizing agent

The relative abundance of the ions with a definite m/e value is measured by

Choose an answer

High pressure of vapours

Strength of electric current measured

Quantity of fast moving electrons

Electron gas

Which of the following is used as anesthetics

Choose an answer

Alcohol

Diethylether

Phenol

Dimethyl ether

The Zwitter ion is also called

Choose an answer

International salt

Internal salt

No salt

None of these

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