Question
What is the unit of concentration of ozone layer?
What is the unit of concentration of ozone layer?
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Chapter: Concerns about our Environment
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Question
Which layer of atmosphere is susceptible to storm and rain?
Which layer of atmosphere is susceptible to storm and rain?
Question
Identify the greenhouse gas: (a) Oxygen (b) Hydrogen (c) Water vapour (d) Nitrogen
Identify the greenhouse gas: (a) Oxygen (b) Hydrogen (c) Water vapour (d) Nitrogen
Question
In which layer of the atmosphere is the minimum temperature noted?
In which layer of the atmosphere is the minimum temperature noted? OR In which layer of the atmosphere does the orbit of…
Question
Chlorine atom (Cl) destroys Ozone molecule (O3) – show with the help of a chemical reaction.
Chlorine atom (Cl) destroys Ozone molecule (O3) – show with the help of a chemical reaction.
Question
The major constituent of Biogas is (a) CH4 (b) CFC (c) CO2 (d) CO
The major constituent of Biogas is (a) CH4 (b) CFC (c) CO2 (d) CO
Question
Give two reasons in favour of using paper for packaging.
Give two reasons in favour of using paper for packaging.
Question
The amount of which greenhouse gas in the atmosphere increases by the burning of fossil fuel?
The amount of which greenhouse gas in the atmosphere increases by the burning of fossil fuel?
Question
Mention two possible future effects of global warming on environment.
Mention two possible future effects of global warming on environment.
Question
What is meant by the calorific value of a sample of coal is 30,000 kJkg-1?
What is meant by the calorific value of a sample of coal is 30,000 kJkg-1? OR Why can wind energy be used…