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Environmental Issues · Question 72

AIPMT 2005MCQEasy📈 Topic in 0% papers+4−1
1

Prolonged liberal irrigation of agricultural fields is likely to create the problem of -

  1. Salinity
  2. Acidity
  3. Aridity
  4. Metal toxicity

Answer

(1) Salinity

Solution

As per NCERT, irrigation without proper drainage of water leads to waterlogging in the soil; it draws salt to the surface of the soil, where the salt is deposited as a thin crust or collects at the roots of plants.

∴ Prolonged liberal irrigation causes soil salinity, which is harmful to crops.

Answer: (1)

Out of syllabusAIPMT 2005

Keep practising — Environmental Issues

2

Which of the following is not used for disinfection of drinking water ?

  1. Chloramine
  2. Ozone
  3. Chlorine
  4. Phenyle
Out of syllabusAIPMT 2005
3

Identify the correctly matched pair -

  1. Basel Convention – Biodiversity Conservation
  2. Kyoto Protocol – Climatic change
  3. Ramsar Convention – Ground water pollution
  4. Montreal Protocol – Global warming
Out of syllabusAIPMT 2005
4

Which one of the following pairs is mismatched ?

  1. Fossil fuel burning – release of CO2
  2. Nuclear power – radioactive wastes
  3. Biomass burning – release of CO2
  4. Solar energy – greenhouse effect
Out of syllabusAIPMT 2005
5

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
Out of syllabusAIPMT 2004
6

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 syllabusAIPMT 2004
7

Common indicator organism of water pollution is :-

  1. Escherichia coli
  2. Lemna paucicostata
  3. Entamoeba histolytica
  4. Eichhornia crassipes
Out of syllabusAIPMT 2004
8

Fluoride pollution mainly affects :-

  1. Heart
  2. Kidney
  3. Brain
  4. Teeth
Out of syllabusAIPMT 2003
9

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 syllabusAIPMT 2003
10

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 syllabusAIPMT 2002
11

Maximum greenhouse gas is released by which country?

  1. France
  2. Britain
  3. India
  4. U.S.A.
Out of syllabusAIPMT 2002

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