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
-
Chemical change
-
physical change
-
No change
-
Biological change
-
Become cold by convection
-
Become cold by radiation
-
Does not become cold
-
Become cold by conduction
C
Correct answer
Explanation
wood is insulator so it won’t conduct.
-
Sugar solution
-
Sea water
-
Alcohol
-
Distilled water
B
Correct answer
Explanation
Sea water is a good conductor of electricity as it is saline so sodium and chloride ions help in conductivity.
-
Solution
-
Suspension
-
Solute
-
Solvent
-
hot water
-
pond water
-
hard water
-
cold water
C
Correct answer
Explanation
Soap does not form foam with hard water.
-
Heavier
-
Fine
-
Lighter
-
Bigger
B
Correct answer
Explanation
Sieving is the method in which a sieve or the strainer is used which has small holes. Only fine particles can pass through these holes, whereas the bigger ones stay in the sieve.
-
Water vapours
-
Water vapours and salt
-
Salt
-
Water
C
Correct answer
Explanation
Evaporation is a process of conversion of liquid into vapours. Water gets evaporated, mud settles down and it is salt which is recovered by evaporation.
-
Water vapours
-
Fat droplets
-
Milk droplets
-
Dust particles
A
Correct answer
Explanation
Milk when heated gives off water in the form of vapours. When milk is heated with the vessel covered, then water vapours can be observed on the inner surface of the lid.
-
solution
-
heterogeneous mixture
-
homogenous mixture
-
pure substance
A
Correct answer
Explanation
Solute in lower quantity is dissolved in a solvent. The mixture of the two is known as solution.
-
increases
-
decreases
-
remains unaffected
-
none of these
A
Correct answer
Explanation
The solubility of any substance can be increased by increasing the temperature of the solution.
-
Iced tea
-
Hot coffee
-
Soup
-
Boiled milk
A
Correct answer
Explanation
Sugar or any solute gets dissolved quickly when the temperature is higher. As hot coffee, soup, and boiled milk are hot, so sugar will quickly dissolve in these. Iced tea being at lower temperature will take longer time to dissolve sugar.
-
Sand and water
-
Sugar and milk
-
Sugar and sand
-
Rice and water
B
Correct answer
Explanation
Heterogeneous mixture is the one in which the solute and solvent can be seen separately as the two do not get dissolved e.g. a mixture of sand and water, sugar and sand, rice and water etc.
-
Constituents
-
Mixtures
-
Pure substances
-
Impurities
B
Correct answer
Explanation
The substances which are made up of only one type of particles are known as pure substances. On the other hand, the substances made up of more than one type of particles are known as mixtures. Different components forming the mixtures are known as constituents.
-
Sea water
-
Air
-
Common salt
-
Pickle
C
Correct answer
Explanation
Mixture is any substance which is made up of 2 or more types of particles e.g. sea water is a mixture of water and dissolved salts, air is a mixture of gases and water vapors, pickle is a mixture of oil, salt, spices etc. But common salt is a compound (NaCl) and not a mixture.