Question # 1

Which of the hydrogen halides has the highest percentage of character?

Choose an answer

HCl

HBr

HF

Hl

Which of all following compound is not possible

Choose an answer

The color of ppts formed by Benedirct's test is

Choose an answer

Brick red

Wine red

Yellow

Orange

Platinum is poisoned by

Choose an answer

Arsenic

Silver

Argon

Zinc

DDT is formed from

Choose an answer

Benzene and Chlorobenzene

Chloral and Chlorobenzene

Chloral and Benzene

Chlorobenzene and chlorine

The reaction between fat and NaOH is called:

Choose an answer

Esterification

Hydrogenolysis

Fermentation

Sponification

Treatment of a secondary alcohol with a suitable oxidizing agent (K₂Cr₂O₇) results in the formation of

Choose an answer

Ketone

Aidehyde

Ether

Alkyl halide

By using graphite electrode the electrolysis of aqueous solution of NaCI produces at anode

Choose an answer

H₂gas

Cl₂gas

NaOH

No metal

The only alcohol that can be prepared by the indirect hydration of alkene is

Choose an answer

ethyl alcohol

propyl alcohol

isobutyl alcohol

methyl alcohol

Ammonium nitrate fertilizer is not used for which crop

Choose an answer

Cotton

Wheat

Sugar cane

Paddy rice

A compound possessingα-hydrogen atom, in the presence of dilute alkali formsβ-hydroxy aldehyde. This product on heating with dilute acid forms an unsaturated crotonaldehyde. The compound is

Choose an answer

CH₃CHO

CH₃CH₂CHO

CH₂= CH - CHO

HC = C - CHO

First atomic theory was put forward by an English school teacher:

Choose an answer

Maxewell

Newton

Sanger

John Dalton

Choose an answer

0.12

0.50

0.25

4.00

The order of distance between the various Bohr orbits is

Choose an answer

r₂- r₁> r₃- r₂> r₄- r₃> ......

r₁> r₂> r₂- r₃> r₄-r₃> .....

r₂-r₁= r₃- r₂= r₄- r₃> .....

r₂- r₁> r₃- r₂< r₄- r₃< ....

Soft drinks and baby feeding bottles are generally made up of

Choose an answer

Polyester

Polyurethane

Polyurea

Polystyrene

The fractions obtained from fractional distillation of petroleum are placed in increasing order of their boiling points. Which order is correct

Choose an answer

Natural gas, petroleum ether, gasoline kerosene

Petroleum ether, kerosene, natural gas, petroleum ether

Gasoline, kerosene, natural gas, petroleum ether

Kerosene, gasoline, petroleum ether, natural gas

Most common oxidation states shownby cerium are

Choose an answer

+2, +4

+3, +4

+3, +5

+2, +3

Lattice energy of NaCI

Choose an answer

+5000 KJ

-344 KJ

-776 KJ

-411 KJ

The quantum number which determines the shape of the orbital is

Choose an answer

principal

azimuthal

magnetic

spin

In the electrolysis of fused bauxite (Al₂O₃2H₂O) with fused Cryolite (Na₃AlF₆) using carbon rods as anode. The product obtained at cathode is

Choose an answer

Na metal

F₂gas

Al metal

O₂gas

Smallest charge of electricity that has been measured so far is

Choose an answer

Charge on a-rays

Charge on electron (1.602 x 10^-19C)

Charge on x-rays

Charge on gamma rays

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

Alkyle magnesium halides are known as

Choose an answer

Simon-smith reagent

Tollen's reagent

Grignard's reagent

Barford's reagent

n-butane and iso butane are an example of

Choose an answer

Chain isomerism

Positional isomerism

Meta merism

Functional group isomerism

As compared to molar solution, in the molal solution the quantity of solvent is :

Choose an answer

Comparatively lesser

More or less equal

Comparatively greater

Very large

The elements in which d or f-orbitals are incomplete are called

Choose an answer

Transition elements

Typical elements

Actinides

lanthanides

Cane sugar is not soluble in benzene but soluble in water because

Choose an answer

Cane sugar is a macro molecule

Cane sugar is an ionic compound

Can sugar has hydrogen bonding

Can sugar is an organic molecule

Which of the statements given below concerning properties of solution, describe a colligative effect?

Choose an answer

Boiling point of pure water decreases by the addition of ethanol

Vapour pressure of pure water decreases by the addition of nitric acid

Vapour pressure of pure benzene decreases by the addition of naphthalene

Boiling point of pure benzene increases by the addition of toluene

Benzene is not prepared from

Choose an answer

Acetylene

Phenol

Benzoic acid

Bromo benzene

CaC₂on hydrolysis form

Choose an answer

CH₄

C₂H₄

C₂H₂

C₆H₆

Splitting of spectral lines when atoms are subjected to strong electron field is called

Choose an answer

Zeeman effect

Stark effect

Photoelectric effect

Compton effect

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