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Environmental Issues

AIPMT 2003MCQEasy📈 Topic in 12% papers+4−1
Ques. 1AIPMT 2003

Fluoride pollution mainly affects :-

  1. Heart
  2. Kidney
  3. Brain
  4. Teeth

Answer

(4) Teeth

Solution

Excess fluoride in drinking water (above about 1.5 ppm) causes fluorosis.

⇒ The first and most visible effect is dental fluorosis: mottling, brown stains and pitting of the enamel of the teeth.

∵ Very high intake over long periods also hardens bones (skeletal fluorosis), but the teeth are mainly affected.

∴ Fluoride pollution mainly affects the teeth.

Answer: (4)

Out of syllabus

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Ques. 2AIPMT 2003

Escherichia coli is used as an indicator organism to determine pollution of water with :-

  1. Faecal matter
  2. Pollen of aquatic plants
  3. Heavy metals
  4. Industrial effluents
Out of syllabus
Ques. 3AIPMT 2002

Which of the following is absent in polluted water?

  1. Larva of stone fly
  2. Hydrilla
  3. Blue-green algae
  4. Water hyacinth
Out of syllabus
Ques. 4AIPMT 2002

Maximum greenhouse gas is released by which country?

  1. France
  2. Britain
  3. India
  4. U.S.A.
Out of syllabus
Ques. 5AIPMT 2001

What is the intensity of sound in normal conversation?

  1. 30–60 dB
  2. 10–20 dB
  3. 120–150 dB
  4. 70–90 dB
Out of syllabus
Ques. 6AIPMT 2000

Which is the cause of the damage expressed as relative biological effectiveness?

  1. Low temperature
  2. High temperature
  3. Radiation
  4. Pollution
Out of syllabus

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