Question # 1

A dry alkaline cell has porous Zn anode and MnO₂as cathode the electrolyte used is

Choose an answer

Ca(OH)₂

NaOH

KOH

NH₄OH

Which of the following hydrides has the lowest boiling point?

Choose an answer

H₂O

H₂S

H₂S3

H₂Te

The degree of polarity of molecule is known as its

Choose an answer

Dipole moment

Moment arm

Bond energy

Ionic character

Ammonia like water also reacts with Grignard's reagent to give

Choose an answer

Alkane

Alkene

Alkyne

Amide

Which woody raw material is used of the manufacture of paper pulp

Choose an answer

Cotton

Bagasse

Poplar

Rice straw

Choose an answer

154 pm

133 pm

120 pm

150 pm

The element like nitrogen, phosphorus, calcium, are added in large amounts to the soils and are called

Choose an answer

Nutrents elemets

Basic elements

Additives

If a reactant or product of a reaction absorbs radiation, then physical method for determining the rate of reaction is

Choose an answer

Spectrometry

Refractometry

Conductivity measurement

Optical method

When two hydrogen atoms approach each other.

Choose an answer

Forces of attraction operate.

Forces of repulsion operate.

Forces of attraction and repulsion operate simultaneously.

Nothing happens.

A polymer may be

Choose an answer

Homopolemer

Co-polymer

Terpolymer

All of these

The heat of formation of SO₂(g) is -70.9 Kcal. The energy required for the decomposition of 1 mole of SO₂(g) is

Choose an answer

35.50 Kcal

70.9 Kcal

141.8 Kcal

-35.9 Kcal

Which one of the following gases is used for artificial ripening of fruits

Choose an answer

Ethene

Ethane

Methane

Propane

Dehydration of an alcohol at 180°

Choose an answer

Alkene

Ether

Ester

An hydride

The radius of first orbit of hydrogen atom

Choose an answer

0.329 A°

0.429 A°

0.529 A°

0.229 A°

A compound A has a molecular formula C₂Cl₃OH. It reduces Fehling solution and on oxidation produces a monocarboxylic acid B.A can also be obtained by the action of Cl₂on Ethanol. A is

Choose an answer

Chloral hydrate

CHCl₃

CH₃Cl

Chloroacetic acid

Purine derivative among the following bases is

Choose an answer

Thymine

Uracil

Guanine

Cytosine

Which of the following species is paramagnetic?

Choose an answer

CO₂

NO

O^2-

CN

Baukelite is a polymer obtained from two monomers

Choose an answer

Phenol and ethanol

Phenol and methanol

Phenol and methanal

Phenol and acetone

The branch of science dealing with structure, composition and changes in matter and laws and principles which govern these changes is called as

Choose an answer

chesmistry

Geology

Physics

Mechanics

Which compound is more soluble in water

Choose an answer

C₂H₅OH

Benzene

CH₃OCH₃

Hexane

Optical rotation method is sued when

Choose an answer

Reaction involve ions

Change of refractive indices

Reactions involving change of optical activity

None of the above

Metal tend to lose electrons, becoming:

Choose an answer

Metals

Positively charged

Negatively charged

(a)And (c)

What is formed when oxalic acid is dehydrated by conc. H₂SO₄?

Choose an answer

C + CO₂

CO

CO₂

CO + CO₂

The ore CaSO₄2H₂O has the general name

Choose an answer

Gypsum

Dolomite

Calcite

Epsom salt

The oxidation number of H is -1 in the compound

Choose an answer

H₂O

H₃BO₃

NaOH

NaH

On the basis of VSEPR theory SO₂is a

Choose an answer

Liner molecule

A bent molecule

A strong molecule

A gaseous molecule

The filtration process is used to to separate solid from :

Choose an answer

Liquid.

Gas.

Solid.

All of above.

When methane reacts with Cl₂in the presence of diffused light the products obtained are

Choose an answer

Chloroform only

Carbon tetrachloride only

Chloromethane and dichloromethane

Mixture of a, b, c

The correct order of reactivity of halogens with alkanes is

Choose an answer

l₂> Br₂> Cl₂> F₂

l₂> Cl₂> F₂> Br₂

F₂> Cl₂> l₂> Br₂

F₂> Cl₂> Br₂> l₂

The toxic organic compounds and heavy metals and metalloids results in contamination of

Choose an answer

Surface water

Ground water

Both surface and ground water

Neither surface nor ground waters

Which compound was recognized the parent member of aromatic compounds

Choose an answer

Aniline

Phenol

Benzene

Toluene

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