Free Master of Chemistry: Physical Chemistry Questions and Answers

Question 1

It is referred to as the solute concentration per unit volume.

Accepted Answer

concentration

Answer

ppm

Answer

molality

Answer

mass

Question 2

if 2g of NaCl is dissolved in 20g of water, then the solution's percentage is

Accepted Answer

9%

Answer

12%

Answer

7%

Answer

5%

Question 3

Choose the inaccurate composition percentage expression.

Accepted Answer

m/d%

Answer

m/v %

Answer

m/m%

Answer

v/v %

Question 4

Pa is the SI unit for pressure. equivalent to

Accepted Answer

1N/m²

Answer

1N/M

Answer

1Nm

Answer

1N/m

Question 5

Which one compresses more easily?

Accepted Answer

gas

Answer

solution

Answer

solid

Answer

liquid

Question 6

Which of the following is not a relationship?

Accepted Answer

1ml=1cm³

Answer

1m3=10cm³

Answer

1L=1dm³

Answer

100L=100dm³

Question 7

Energy needed to stop a reaction is referred to as

Accepted Answer

activation energy

Answer

specific heat

Answer

minimum potential energy

Answer

maximum potential energy

Question 8

The relationship between a substance's concentration and the quantity of energy it absorbs is provided by

Accepted Answer

Beer’s law

Answer

Snell’s law

Answer

Avogadro’s law

Answer

Lambert law

Question 9

Surface-adsorbed chemicals are known as surfactants, and surface tension is

Accepted Answer

decreased

Answer

varied

Answer

increased

Answer

remain constant

Question 10

The rate at which phenolphthalein fades in basic solution is

Accepted Answer

1st order

Answer

0th order

Answer

2nd order

Answer

3rd order