Lakshya Education MCQs

Question: Most of the radiation emitted by a human body is in the form of:
A.Ultraviolet radiation and is invisible
B.Visible radiation but is too weak to be visible
C.Infrared radiation and is invisible
D.Humans do not emit electromagnetic radiation
Answer: Option C

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Question 1. Solar radiation reaches the earth's surface as:
  1.    Visible radiation only
  2.    Ultraviolet radiation only
  3.    Infrared radiation only
  4.    Visible and infrared radiation only
  5.    Ultraviolet, visible, and infrared radiation
Answer: Option E
Question 2. Carbon monoxide is a pollutant because it
  1.    reacts with 02
  2.    reacts with haemoglobin
  3.    inhibits glycolysis
  4.    inactivates nervous system A
Answer: Option B
Question 3. The earth's atmospheric window is in the:
  1.    Ultraviolet region
  2.    Visible region
  3.    Infrared region
  4.    Polar regions
Answer: Option C
Question 4. Name the endangered animal which is protected in Rajamalai National Park
  1.    Chital
  2.    Black buck
  3.    Nilgiri Tahr
  4.    None
Answer: Option C
Question 5. Sea water is
  1.    acidic
  2.    alkaline
  3.    neutral
  4.    hypotonic
Answer: Option B
Question 6. Which phytoplankton exists at the size of 60 micro metre?
  1.    Nanoplankton
  2.    Ultraplankton
  3.    Net plankton
  4.    Picoplankton
Answer: Option A

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