Chemistry · Science General

States of Matter

2,382 Questions

States of matter questions explore physical changes, evaporation, phase transitions, and the properties of liquids and gases. Topics cover density, cryosurgery, heavy water, and electrolytes. This foundational chemistry topic frequently appears in general science sections of SSC and railway exams.

Phase change mechanismsEvaporation and temperature effectsProperties of liquidsPhysical versus chemical changesElectrolytes and heavy water

States of Matter Questions

Multiple choice

The process due to which steam changes into liquid state on cooling

  1. Decantation

  2. Sedimentation

  3. Filtration

  4. Evaporation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Explanation: Evaporation is a type of vaporization of a liquid that occurs from the surface of a liquid into a gaseous phase that is not saturated with the evaporating substance. The other type of vaporization is boiling, which is characterized by bubbles of saturated vapor forming in the liquid phase.

Multiple choice

Which of these fits gap 22?

Directions: Complete this passage by selecting the most suitable option for the corresponding gap.

”Water, water everywhere, not a drop to drink” The problem faced in the middle of the sea by a ___(21)_____ sailor, troubles us regularly in our daily lives. Life cannot _____(22)______ without water, and we get thirsty without drinking it.______(23)_____, natural water, or that from faulty supplies, may carry harmful substances or bacteria. They pollute or damage the purity of water, and sicken our body. That is why, it is always very important to make sure while drinking, that the glasses are clean, and the water is____(24)_____ to drink. 



 

  1. sustain

  2. survive

  3. maintain

  4. stay
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

'Sustain' is the correct answer. It means life cannot be supported without water.

Multiple choice

Which of these fits gap 24?

Directions: Complete this passage by selecting the most suitable option for the corresponding gap.

”Water, water everywhere, not a drop to drink” The problem faced in the middle of the sea by a ___(21)_____ sailor, troubles us regularly in our daily lives. Life cannot _____(22)______ without water, and we get thirsty without drinking it.______(23)_____, natural water, or that from faulty supplies, may carry harmful substances or bacteria. They pollute or damage the purity of water, and sicken our body. That is why, it is always very important to make sure while drinking, that the glasses are clean, and the water is____(24)_____ to drink. 



 

  1. dirty

  2. sweet

  3. enough

  4. safe
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Qualities of drinkable water are being talked about. Therefore 'safe' is the correct answer.

Multiple choice

What happens to a lump of cotton wool when it is put in cold water?

  1. The lump of cotton wool expands.

  2. The lump of cotton wool shrinks.

  3. The lump of cotton wool disintegrates and dissolves in water.

  4. Both (1) and (3)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The lump of cotton wool shrinks. Air is present in the cotton wool. When it is dipped in water, air present in the cotton wool escapes and it shrinks.