Ch-4 Air ( NCERT) Grade 7 Geography

In what amount is Argon, present in the air?

• 0.28%

• 0.75%

• 0.93%

• 0.86%

What is the average height of troposphere??

• 30 km

• 18km

• 13km

• 43km

TRUE OR FALSE When air is heated it expands

• True

• False

what fraction of the Sun's heat does earth receive?

• 1 in 2,000,000,000

• 1 in 200,000,000,000

• 1 in 20,000,000

• 1 in 200,000,000

When did the second supercyclone occur in Odisha?

• 28 Sept., 1998

• 29 October, 1999

• 18  August, 1999

• 29 Sept., 1998

What kind of gases are present in the exosphere?

• Light gases like ARGON AND NITROGEN

• Heavyweight gases like helium and Hydrogen

• Light gases like helium and hydrogen