Which of the following procedures will give you water free from all impurities?
(a) Adding chlorine tablets
(b) Distillation
(c) Boiling
(d) Filtration

Academic Chemistry NCERT Class 8

Correct Answer: (b) Distillation

Explanation: During distillation, all the harmful microorganisms (or germs) present in water are killed and it becomes absolutely safe for drinking.

Updated on: 10-Oct-2022

7 Views

Related Articles
Which of the following is not a physical change?(a) Boiling of water to give water vapour(b) Melting of ice to give water(c) Dissolution of salt in water(d) Combustion of Liquefied Petroleum Gas (LPG)
Which condition out of the following will increase the evaporation of water?(a) Increase in temperature of water.(b) Decrease in temperature of water.(c) Less exposed surface area of water.(d) Adding common salt to water.
(a) Name one ionic compound containing chlorine and one covalent compound containing chlorine.(b) How will you find out which of the water soluble compound A or B is ionic?
You are given a mixture of iodine in alcohol called tincture iodine. Which method will you use to recover both, iodine as well as alcohol, from this mixture ?(a) evaporation (b) simple distillation(c) fractional distillation (d) crystallisation
Which of the following cannot be separated from air by the process of fractional distillation ?(a) oxygen (b) argon (c) hydrogen (d) nitrogen
The salt which give a neutral solution on dissolving in water will be:(a) CH3COONa (b) NH4Cl (c) KCl (d) Na2CO3
The salt which will give an acidic solution on dissolving in water is:(a) KCl (b) NH4Cl (c) Na2CO3 (d) CH3COONa
The liquid air has three components X, Y, and Z whose boiling points are: – 186°C, –183°C and –196°C, respectively. When liquid air is fed into a tall fractional distillation column from near its bottom and warmed up slowly :(a) Which component will be collected from near the bottom of the fractional distillation column? Why?(b) Which component will be collected from the top part of the fractional distillation column? Why?(c) Which component will be collected from the middle part of the fractional distillation column? Why?(d) What could the components X, Y and Z be?
Which one of the following solutions will not conduct electricity?$(a)$. Lemon juice $(b)$. Vinegar$(c)$. Tap water $(d)$. Vegetable oil
The best way to recover sugar form an aqueous sugar solution is :(a) evaporation to dryness (b) distillation (c) filtration (d) crystallisation
Which of the following give you more energy?(A) An apple(B) A boiled egg(C) A bowl of cornflakes(D) A bowl of dal
Which of the following does not have a fixed melting point/boiling point?(a) gold (b) ethanol(c) air (d) oxygen
One of the following salt will give an alkaline solution on dissolving in water. This is:(a) Na2CO3 (b) Na2SO4 (c) NaCl (d) (NH4)2SO4
Evaporation of a liquid occurs at(a) boiling point(b) a fixed temperature(c) temperature lower than boiling point(d) all temperatures
Which of the following is wastewater?(a) Water trickling from a damaged tap.(b) Water coming out of a shower.(c) Water flowing in a river.(d) Water coming out of a laundry.

Kickstart Your Career

Get certified by completing the course

Advertisements