States of Matter MCQs

States of Matter MCQs

Matter can exist in three primary states: solid, liquid, and gas. A substance can be found in one or more of these states; for example, water can exist as a solid (ice), liquid (water), and gas (steam). The state of matter is determined by intermolecular forces and the arrangement of molecules. While a substance’s chemical properties remain consistent regardless of its state, the rate of reaction can vary with changes in physical state. By altering temperature or pressure, matter can transition from one state to another. In addition to the three basic states, there are also two other states of matter: plasma and Bose-Einstein condensate.

A container with a pin-hole contains equal moles of H₂(g) and O₂(g). Find the fraction of oxygen gas escaped at the same time when one-fourth of hydrogen gas escapes

(a) 1/16
(b) 1/4
(c) 1/2
(d) 1/8

Find the temperature at which the rate of effusion of N₂ is 1.625 times to that of SO₂ at 500℃

(a) 620℃
(b) 173℃
(c) 110℃
(d) 373℃

What are the conditions for gas like Carbon monoxide to obey the ideal gas laws?

(a) low temperature and low pressure
(b) low temperature and high pressure
(c) high temperature and low pressure
(d) high temperature and high pressure

Find the change in the root mean square speed of the gas on raising the temperature from 27℃ to 927℃

(a) becomes times
(b) gets doubled
(c) gets halved
(d) remains same

If the temperature is doubled, the average velocity of a gaseous molecule increases by

(a) 4
(b) 1.4
(c) 2
(d) 2.8

Find the relation between probable velocity, mean velocity and root mean square velocity

(a) three basic states
(b) three basic states
(c) three basic states
(d) three basic states

Find the molecular mass of a gas that takes three times more time to effuse as compared to He with the same volume

(a) 9 u
(b) 64 u
(c) 27 u
(d) 36 u

Find the fraction of the total pressure exerted by hydrogen if it is mixed with ethane in an empty container at 25℃

(a) 15/16
(b) 1/16
(c) 1/2
(d) 1

At the same temperature, the average molar kinetic energy of N₂ and CO is

(a) KE₁ > KE₂
(b) KE₁ < KE₂
(c) KE₁ = KE₂
(d) insufficient information given

If 1.204 x 10^21 molecules of H2SO4 are removed from 392 mg of H₂SO₄, find the moles of H₂SO₄ left.

(a) 4 x 10^-3
(b) 1.5 x 10^-3
(c) 1.2 x 10^-3
(d) 2 x 10^-3