Question # 1

In a group, the atomic radii from top to bottom

Choose an answer

increase

decrease

don't change

show variable trend

During thunderstorms, water dissolves

Choose an answer

Dust particles

HCl

Nitric acid

Clouds

The reaction of formaldehyde with HCN is

Choose an answer

Nucleophilic substitution

Electrophilic substitution

Nucleophilic addition

Free radical addition

Which gas is not a constituent of atmosphere?

Choose an answer

Xe

O₃

H₂

F₂

Diamond, graphite and sand grant molecules are belonged to:

Choose an answer

Inorganic

Organic

biopolymer

synthetic

Albumins are separated by

Choose an answer

1/2 saturated ammonium sulfate

Full saturated ammonium sulfate

20% saturated ammonium sulfate

60% saturated ammonium sulfate

The original volume of a gas at 0° is 273 cm³at constant pressure, its volume at 273°C becomes

Choose an answer

zero cm³

546 cm³

446 cm³

346 cm³

Ethene C₂H₄and N₂gases diffuse at the same rate at room temperature. it is due to the reason

Choose an answer

these are non polar gases

their molecular masses are same

both are covalent molecules

both have multiple bonds

Lonic solids are characterized by:

Choose an answer

low melting points

_{good conductivety in solid state}

high vapour pressures

solubility in polar solvents

Polymer formed by the combining of three different monomers is called:

Choose an answer

Homopolymer

Copolymer

Ter polymer

Thermoplastic polymers

Which one of following elements is not present in all proteins?

Choose an answer

Carbon

Hydrogen

Nitrogen

Sulphur

The total number of transition elements is:

Choose an answer

10

14

40

50

A solution has pH = 0, its H⁺ion concentration is

Choose an answer

1 x 10^-14

1 x 10¹⁴

1 x 10¹

1

Purification of an impure copper is made by electrolytic cell, in which impure copper is anode and pure copper is cathode, and the electrolyte used is

Choose an answer

H₂SO₄

CuSO₄

ZnSO₄

Na₂SO₄

The formation of compounds like PF₅, BCI₃, SF₆indicates that

Choose an answer

These halides are ionic

These halides are covalent

They are Lewis acids

Octet rule not obeyed so the rule is not universal

The comparative rates at which the solutes move in paper chromatography, depend on:

Choose an answer

the size of per sued.

R_f values of solutes

temperature of the experiment

size of the chromatography tank used.

With amino acids ninhydrin solution gives

Choose an answer

Blue

Violet

Bluish violet

White

Cracking normally gives smaller ______

Choose an answer

Alkanes

Alkenes

Alkynes

Both a and b

Bond angle is minimum for

Choose an answer

H₂O

H₂S

H₂Se

H₂Te

A compound contains 75% carbon and 25% hydrogen, by mass. What is the molecular formula of the compound/

Choose an answer

C₃H₈

CH₄

C₂H₄

C₂H₆

When aqueous NaCl is electrolyzed, which of the following ions get discharged at anode :

Choose an answer

H⁺

Na⁺

OH^-

Cl^-

Each of the following compounds is effective as a refrigerant. The release of which one of these causes the greatest depletion of the ozone layer

Choose an answer

CCl₂F₂

CH₃OCH₃

CH₃CHF₂

CH₃CH₂CH₃

More Classes

Other Links

Chemistry General Science Test Medium Mode 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