Waste Management Test

Waste Management

This is online test 01 for CBSE class 12 Biology Environmental Issues (Waste management).. There are 10 questions in this test with each question having around four answer choices.

Questions & Answers

1
Bioremediation of Phenol, one of the most common environmental pollutants is reported to be assisted by :
  • A
    earthworms & nematodes
  • B
    earthworms & bacteria
    Correct
  • C
    only bacteria
  • D
    only earthworms
2
Which of the following is not a radioactive isotope:
  • A
    Strontium- 90
  • B
    Lead- 207
    Correct
  • C
    Iodine- 137
  • D
    Cobalt- 60
3
Match the following: Pollutant a) Benzpyrene b) Carbondioxide c) Carbonmonoxide d)Chlorofluorocarbons Its effect i) Ozone depletion ii) lung cancer iii) atmospheric warming iv) reduced oxygen supply
  • A
    a)-iii, b)-i, c)-iv, d)-ii
  • B
    a)-iv, b)-i, c)-ii, d)-iii
  • C
    a)-ii, b)-iii, c)-iv, d)-i
  • D
    a)-ii, b)-iii, c)-ii, d)-iv
Answer
Not Available
4
The metal which is inert and when swallowed remains non-toxic but becomes severely toxic when inhaled in volatile form:
  • A
    Mercury
    Correct
  • B
    Selenium
  • C
    Lead
  • D
    Cadmium
5
Which of the following can be categorised as a biological pollutant:
  • A
    Heavy metals
  • B
    Industrial waste
  • C
    Organophosphates
  • D
    Mildew
    Correct
6
Fertilizers will not :
  • A
    cause biological control
    Correct
  • B
    increase fertility
  • C
    cause eutrophication
  • D
    pollute water
7
ECOSAN (compost toilets) is about :
  • A
    minimising unnecessary water use
  • B
    household and personal hygiene
  • C
    all of the following are correct
    Correct
  • D
    maximising recycling and reuse at domestic level of grey water
8
The cultivation of a single cash crop in plantations or estates (large areas of land) on a large scale(in the whole year)is called plantational farming and example is/are:
  • A
    rice& maize plantations
  • B
    rubber plantation
    Correct
  • C
    wheat plantation
  • D
    sugarcane plantations
9
Potency of injury that can be caused by a radioactive isotope will not depend upon :
  • A
    its rate of being absorbed and excreted
  • B
    its place of availability
    Correct
  • C
    its ionising power
  • D
    its penetrating ability
10
The possible drawback of bioremediation method for oil spill containment is :
  • A
    bacterial degradation is inefficient for large oil spills.
  • B
    Requires large amount of energy and bacterial secretions are toxic to aquatic creatures.
  • C
    bacteria must be allowed to grow in low winds and in very calm waters.
  • D
    large number of bacteria outcompete other organisms for oxygen creating dead zone.
    Correct