Question # 1

The compound that has zero dipole moment is

Choose an answer

HCl

H₂S

NH₃

CH₄

Which one of the followings has polar covalent bonds hut is overall nom-polar molecule:

Choose an answer

HF

CO₂

CH₄

N₂

Elements of group ll-A are called

Choose an answer

f-block elements

s-block elements

p-block elements

d-block elements

Which of the following laws study the pressure-volume relationship of a gas at constant temperature,we get

Choose an answer

a straight line

a curve with different peaks

straight line parallel to x-axis

a curve called isotherm

Which one of the following metals can replace the Copper from aqueous solution of its salt more easily?

Choose an answer

Cd

Fe

Zn

Na

The volume of gas depends upon the ______ molecules

Choose an answer

Size of

Molecular weight

Space between

Both a and b

The densities of two gases are in the ratio of 1 : 16.The ration of their rates of diffusion is

Choose an answer

16 : 1

4 : 1

1 : 4

1 : 16

If Cl2 is passed through hot NaOH. NaCIO3 is formed and the oxidation number of CI changes from

Choose an answer

-1 to 0

0 to +5

0 to-1

0 to +1

The reduction potentials of non-metals are A =+0.54V, B=+1.08V, C=+1.36V. D= +2.87V Which non -metal can displace all other from aqucous solution of their salts

Choose an answer

A

C

B

D

Cholestryl benzoate tums into milky liquid at

Choose an answer

140°C

145°C

148C°

149°C

Which af the following compound reacts slower than benzene in the electrophilic substitution.

Choose an answer

Phenol

Nitrobenzene

Toluene

Aniline

On passing HCI gas through a saturated solution of commercial sodium chloride, pure crystals of NaCI are precipitated due to

Choose an answer

Increase in pH of the solution

Decrease in pH of the solution

Common ion effect

Increase in ionization of NaCl

Choose an answer

-110.7 KJ/mole

+110.7 KH mole^-1

676.7 KJ mole^-1

+393.7 KH mole^-1

SN₂reactions can be best carried out with:

Choose an answer

Prl. alkyl halide

Sec. Alkyl halide

Ter. Alkyl halide

All of three

Refrectrometric method is used when

Choose an answer

Reactions involving absorption of I.R. or U. V

Reactions involving change of refractive index

Reactions involving ions

Change of optical activity

Alkali metals react violently with halogens to form

Choose an answer

Hydrides

Halides

Anyhydrides

None of these

The net heat change in chemical reaction is same whether it is brought in two or more different ways in one or several steps. it is known as

Choose an answer

Henry's law

Joule's principle

Hess's law

Law of conservation of energy

In an electrolytic cell, the electrons flow from :

Choose an answer

Cathode to anode or opposite

Cathode to anode

Anode to cathode

Random flow

It is common observation that rates of chemical reactions differ :

Choose an answer

Greatly.

A little bit.

Moderately.

Formic acid is obtained when

Choose an answer

Calcium acetate is heated with conc.H₂SO₄

Calcium formate is heated with calcium acetate

Glycerol is heated with oxalic acid

Acetaldehyde is oxidized with K₂Cr₂O₇and H₂SO₄

In a Galvanic cell, the electrons flow from

Choose an answer

A node to cathode through the solution

Cathode to anode through the external circuit

Anode to cathode through the external circuit

Calculate the amount of charge flowing in 2 minute in a wire of resistance 10Ωwhen a potential difference of 20 V is applied

Choose an answer

120 C

240 C

20 C

4 C

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