Download App

Natural Resources — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceNatural Resources1 Mark
Question

Green house effect is caused by:

  1. Green plants.
  2. Infrared rays.
  3. UV-rays.
  4. X-rays.
✓

Answer

  1. Infrared rays.

Explanation:

Greenhouse gases trap infrared rays and stop them from escaping the earth’s surface thus causing global warming.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q-[Bio-1M]" from Natural Resources→Natural Resources — all question types→Science STD 9 question papers→CBSE Board STD 9 question papers→CBSE Board question paper generator→

Similar questions

1A0 is:
→

Which of the following is leguminous green fodder commonly available in winter?

  1. Cow pea.
  2. Elephant grass.
  3. Berseem and lucerne.
  4. Rice and jowar.
→
Phloem in the plant perform the function of _________.
→
________ is the key to increase the number of cellsin a living being.
→

The jersey bull used for crossbreeding is exotic variety from:

  1. England
  2. Scotland
  3. Switzerland
  4. Holland
→
A cell shrinks on being kept in a solution. The solution is:
→
Which crop is grown between two cereal crops in crop rotation?
→
Who proposed the cell theory?
→

Which of the following is not a draught animal?

  1. Camel
  2. Elephant
  3. Sheep
  4. Horse
→
Lysosomes are made up of:
→