Advertisements
Advertisements
प्रश्न
Air is a pure substance.
पर्याय
True
False
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.
Connect with sports Air is not a pure substance. It helps us in many ways from breathing to playing. Balloon sports are a very popular sport. Hot air is lighter than cool air. So, the balloons filled with hot air rise up. Find out more about hot air balloons.
______ has the same properties throughout the sample.
A ______ substance is made up of only one kind of particle.
Complete the Analogy.
Made up of one kind of particles: Pure substance:: Chemical combination of two or more element: ______.
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?
