Waste Management Test

Waste Management

This is online test 02 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
Read the following statements: a) TCE & PCE are used in dry cleaning. b) Acute exposure toTCE & PCE affects CNS
  • A
    both the statements are wrong
  • B
    both the statements are correct
    Correct
  • C
    Statement b) is correct but a) is wrong
  • D
    Statement a) is correct but b) is wrong
2
Read the following statements: i.DDT, PCBs & CFCs transform easily in the environment. ii. Chlorinated or halogenated compounds are typically persistent.
  • A
    both the statements are correct
  • B
    Statement ii) is correct but i) is wrong
    Correct
  • C
    Statement i) is correct but ii) is wrong
  • D
    both the statements are wrong
3
For pollution control :
  • A
    Fly ash generated on burning coal can be used to manufacture bricks
  • B
    none of these are feasible
  • C
    both B & C
    Correct
  • D
    Bottles of soft drinks can be used for making fibers for carpeting
4
Heavy metals are toxic and potential carcinogens. Plant which can absorb heavy metals is :
  • A
    Azolla
    Correct
  • B
    Hydrilla
  • C
    Ectocarpus
  • D
    Nelumbo
5
Which of the following structure is that of a severely carcinogenic chemical :
  • A
    Option A
  • B
    Option B
  • C
    Option C
    Correct
  • D
    Option D
6
Read the following statements: i. Bioaccumulation depends on hydrophobicity, persistence and toxicity of pollutants. ii. Concentration of pollutants is biomagnified going down the food chain.
  • A
    Statement ii) is correct but i) is wrong
  • B
    Statement i) is correct but ii) is wrong
    Correct
  • C
    both the statements are wrong
  • D
    both the statements are correct
7
‘Ecosan’ in Kerala and Sri Lanka has following features : i. these toilets don’t need sewers and treatment plants ii. Do not pollute the ground water or soil iii. Totally self-contained treatment of human excreta away from the site of defecation
  • A
    all statements are correct
  • B
    only (ii) is correct
  • C
    only ii & iii are correct
  • D
    only i & ii are correct
    Correct
8
Which of the following plants depollute air by fixing CO ?
  • A
    Coleus and Pinus
  • B
    Phaseolus and Ficus
    Correct
  • C
    Quercus and Ficus
  • D
    Pinus and Ficus
9
e-wastes are managed by
  • A
    Send to industries for recycling
  • B
    Dumping along with domestic wastes
  • C
    Thrown into water bodies.
  • D
    Buried in landfills or incinerated.
    Correct
10
In sanitary landfills
  • A
    Wastes are burnt in open to reduce its volume.
  • B
    Wastes are dumped and buried at source.
  • C
    Wastes are dumped in a depression after compaction and covered with dirt every day.
    Correct
  • D
    Wastes are dumped on plane lands after compaction and left for decomposition.