Advertisements
Advertisements
प्रश्न
Air is a pure substance.
पर्याय
True
False
Advertisements
उत्तर
Air is a pure substance- False.
correct statement
Air is a mixture of gases.
APPEARS IN
संबंधित प्रश्न
Give the main difference between a pure substance and an impure substance.
______ has the same properties throughout the sample.
Which of the following are pure substances? Ice, Milk, Iron, Hydrochloric acid, Mercury, Brick and Water.
We mix rice, dal, salt, chilies, pepper, ghee, and other ingredients to make Pongal. So Pongal is also a ______.
Name the process associated with the following
Dry ice is kept at room temperature and at one atmospheric pressure.
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
The allotropic form of a non-metal is a good conductor of electricity. Name the allotrope.
Iron filings and sulphur were mixed together and divided into two parts, ‘A’ and ‘B’. Part ‘A’ was heated strongly while Part ‘B’ was not heated. Dilute hydrochloric acid was added to both Parts and evolution of gas was seen in both cases. How will you identify the gases that evolved?
A substance must absorb ______ so that it can melt.
Is blood a pure substance?
Name some substances that are sublime.
