Lichens are the best indicator of Air pollution Sound pollution Noise pollution

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Question
Lichens are the best indicator of
Options
A. Air pollution
B. Sound pollution
C. Noise pollution
D. Water pollution

Correct Answer

Air pollution

Explanation

1. Lichens are plants that grow in exposed places such as rocks or tree bark.

2. Lichens are widely used as environmental indicators or bio-indicators. They can be used as air pollution indicators, especially of the concentration of sulfur-di-oxide in the atmosphere.

3. They need to be very good at absorbing water and nutrients to grow there.

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General Science problems

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1. The power of a lens is measured in:
Options
A. diopters
B. aeon
C. lumen
D. candela

Discuss

Correct Answer: diopters

2. Iodine test is used to detect
Options
A. Carbohydrate
B. Fat
C. Protein
D. Cholesterol

Discuss

Correct Answer: Carbohydrate

Explanation:

The iodine test is used to test for the presence of starch i.e, Carbohydrate.

3. Where is the headquarters of the United Nations Economic and Social Council (ECOSOC) ?
Options
A. Berlin
B. Spain
C. London
D. New York

Discuss

Correct Answer: New York

Explanation:

The Economic and Social Council (ECOSOC) is one of the six principal organs of the United Nations for coordinating the economic, social and environmental issues, as well as for implementing internationally agreed development goals. Recently, it is in news because India has been re-elected to the United Nations ECOSOC for another 3-year term. India was among 18 nations to win election to the Economic and Social Council (ECOSOC). India obtained 183 votes, the second highest after Japan in the Asia Pacific category. The elected members of ECOSOC for a three-year term beginning 1 January, 2018 are Belarus, Ecuador, El Salvador, France, Germany, Ghana, India, Ireland, Japan, Malawi, Mexico, Morocco, Philippines, Spain, Sudan, Togo, Turkey and Uruguay. The headquarters of the ECOSOC is located in New York, Unites States.