Question # 1

Hess's law is analogous to

Choose an answer

Law of heat summation

law of increasing entropy

Law of heat exchange

Ist law of thermodynamics

In the reaction A2 (g) + 4B2 (g) <-----------> 2AB4 (g) such that ∆H < 0, the formation of AB4(g) will be favoured at

Choose an answer

Low temperature and high pressure

Low temperature and low pressure

High temperature and low pressure

High temperature and high pressure

The pH of ideal buffer is

Choose an answer

10

7

Less than 7

0

Variable Oxidation state of is related to transition elements

Choose an answer

empty d-subshells

Completely filled

Partially filled d-subshell

d-d transition

The pH range of acid rain is?

Choose an answer

7-6.5

6.5-6

6-5.6

Less than 5

Formula of stearic acid is:

Choose an answer

C₁₁H₂₃COOH

C₁₃H₂₇COOH

C₁₅H₃₁COOH

C₁₇H₃₅COOH

Which of the following is not a secondary pollutant

Choose an answer

Ozone

Carbonic acid

Sulphuric acid

Carbon dioxide

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

Which of the following pair has the same no. of electrons in d- subshell

Choose an answer

Sc+3,Ti+3

Mn+2,Fe+3

Ti+3,V+3

Cr+3.Co+2

Which of the following element has high m.p and b.p, it acts as a reducing agent, and can react with bases?

Choose an answer

Sr

Ca

Be

Mg

Carboxylic acid is more acidic than phenol because of the greater stability of

Choose an answer

Carboxylic acid

Phenoxide ion

proton

Carboxylate ion

The number of moles of solute in 1000g (1 Kg) of the solvent is called :

Choose an answer

Molarity

Normality

Mole fraction

The total values of magnetic quantum number of subshell are five, the subshell is

Choose an answer

S-subshell

P-subshell

D-subshell

F-subshell

In the particular reaction for the valueK_{c 1 x}10^-25which statement is correct :

Choose an answer

Almost forward reaction is completed.

Amount of reactant is negligible as compared to product.

Amount of product is negligible as compared to reactant.

Amount of product is equal to amount of reactant.

An electrolyte

Choose an answer

Forms complex ions solution

Gives ions only when electricity is passed

Possesses ions even in solid state

Gives ions only when dissolved in water

A solution is a homogeneous mixture of two or more kinds different :

Choose an answer

Molecular.

Covalent substance

Ionic Substances

Both (a) and (c)

Which of the following elements is/are not liquid at 30°C?

Choose an answer

Ga

Hg

Ge

Cs

The difference of potential of two electrodes when concentration of solution is 1M each at 25°C and1 atm is called :

Choose an answer

Cell reaction.

Electrode potential.

Cell voltage.

Standard cell potential.

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

Replacement of Cl of Chlorobenzene to give phenol requires drastic conditions but chlorine of 2, 4-Dinitrochlorobenzene is readily replaced because

Choose an answer

NO₂makes the electron rich ring at ortho and para positions

NO₂withdraws electrons at metaposition

NO₂donate electrons at m-position

NO₂withdraws electrons at ortho and para position

In the modern periodic table the elements are placed in the ascending order of their

Choose an answer

Atomic masses

Melting points

Boiling points

Atomic numbers

Choose an answer

di(4-bormophenyl) method

Methanol

Propan-1-ol

Propan-2-ol

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