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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
Fuels which do not leave any residue on burning are
विकल्प
coal and wood
coal and LPG
wood and CNG
LPG and CNG
उत्तर
LPG and CNG
APPEARS IN
संबंधित प्रश्न
Fill in the blank
Although we cannot see air, we can ___it.
Tick (√) the correct alternative from the choice given for the following statement.
Respiration
Give a brief account of the discovery of air and the scientists involved.
What will happen if the amount of water vapour in the air increases.
Name the important scientists and their studies which led to the discovery of the components of air.
Fill in the blank:
Nitrogen of the air is utilized by plants for formation of _____.
Fill in the blank:
Rusting is a chemical reaction which involves _____ oxidation.
Draw a neat labelled diagram for the following experiment.
To study the presence of carbon dioxide in air.
The layer of air around the earth is known as ______.
Cool and soothing wind: Breeze.
uproot trees wind: ______.
