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Environmental Issues

AIPMT 2004MCQEasy📈 Topic in 38% papers+4−1
Ques. 1AIPMT 2004

In 1984, the Bhopal gas tragedy took place because methyl isocyanate :-

  1. Reacted with DDT
  2. Reacted with water
  3. Reacted with ammonia
  4. Reacted with CO2

Answer

(2) Reacted with water

Solution

In December 1984, water entered tank E-610 of methyl isocyanate (MIC, CH3-N=C=O) at the Union Carbide pesticide plant in Bhopal, and MIC reacted exothermically with it:

CH3NCO + H2O CH3NH2 + CO2

The heat raised the temperature and pressure in the tank, so a large cloud of toxic MIC gas escaped into the air.

∴ The tragedy took place because methyl isocyanate reacted with water.

Answer: (2)

Out of syllabus

Keep practising — Environmental Issues

Ques. 2AIPMT 2004

Lead concentration in blood is considered alarming if it is -

  1. 4-6 g/100 mL
  2. 30 g/100 mL
  3. 20 g/100 mL
  4. 10 g/100 mL
Out of syllabus
Ques. 3AIPMT 2004

Common indicator organism of water pollution is :-

  1. Escherichia coli
  2. Lemna paucicostata
  3. Entamoeba histolytica
  4. Eichhornia crassipes
Out of syllabus
Ques. 4AIPMT 2003

Fluoride pollution mainly affects :-

  1. Heart
  2. Kidney
  3. Brain
  4. Teeth
Out of syllabus
Ques. 5AIPMT 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. 6AIPMT 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. 7AIPMT 2002

Maximum greenhouse gas is released by which country?

  1. France
  2. Britain
  3. India
  4. U.S.A.
Out of syllabus
Ques. 8AIPMT 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. 9AIPMT 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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