CHEM 156 Mock Test (RFC academic Unit)

'No two electrons in the same atom can bear the same form of quantum number' This theory is known as

Pauli Exclusion principle

Hund's rule

Bohrs theory

De Broglie's principle

The combination of atoms take place due to

The average rate and instantaneous rate of a reaction are equal

At the end

at the start

In the middle

When two rates have a time interval equal to zero

In the reaction 2A + B → A2B, if the concentration of A is doubled and that of B is halved, then the rate of the reaction will

Increase 2 times

Decrease 2 times

Increase 4 times

Remain the same

Which of the following statements is wrong?

When two orbitals overlap in-phase with each other, a bonding molecular orbital forms.

When two orbitals overlap out-of-phase with each other, an antibonding molecular orbital forms.

When one of two atoms connected by a σ bond rotates about the bond axis, orbital overlap is lost.

When one of two atoms connected by a π bond rotates about the bond axis, orbital overlap is lost.

Which of the following pairs does not show an acid and its conjugate base?

HSO4- and SO42-

H2SO4 and SO42-

H2SO4 and HSO4-

HNO3 and NO3-

The pressure that a single component in a gaseous mixture would exert if it existed alone in the same volume as the mixture and at the same temperature as the mixture is referred to as.

Absolute Pressure

Partial pressure

Total pressure

None of the mentioned

What will be the pH of the solution on mixing a 50 mL solution of a strong acid of pH=1 with a 50 mL solution of strong acid of pH =2.

0.74

1.5

1.76

1.26

CHEM 156 Mock Test (RFC academic Unit)

More Quizzes