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The most abundant constituent of atmospheric air is ?

  • Oxygen
  • Hydrogen
  • Carbon
  • Nitrogen

Answer: Option D

Similar Questions :

1. Branch of science which used in test of breast cancer ?

  • Mycology
  • Mammography
  • Microbiology
  • Morphology

Answer: Option B

Explanation:

Mycology - is study of fungi.

Microbiology - is study of micro organisms like virus, bacteria etc.

Morphology - is study of external structures.

2. Which of the following is a physical basis of life ?

  • Protoplasm
  • Nucleus
  • Mitochondria
  • Ribosome

Answer: Option A

3. What is Myopia ?

  • Colour blindness
  • Night blindness
  • Long sightedness
  • Short sightedness

Answer: Option D

4. Who invented Polio Vaccine ?

  • Harrison and Sympson
  • Johan E. Salk
  • Luvenhauk - Leeuwenhock
  • Karl Landsteiner

Answer: Option B

Explanation:

Harrison and Sympson invented chloroform,

Luvenhauk - Leeuwenhock invented Bacteria,

Karl Landsteiner invented Blood Transfer.

5. What is study of heart ?

  • Ecology
  • Dermatology
  • Cardiology
  • Demography

Answer: Option C

Explanation:

Ecology - Study of interrelationship between living and their environment.

Dermatology - Study of Skin.

Demography - Study of population.

Read more from - Biology Questions Answers
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