Biology - Mock Test 278

Question 2771

A population is a group of?

A) individuals in a species B) species in a community C) communities in an ecosystem D) individuals in a family

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Question 2772

Carbon mono oxide is a pollutant because?

A) it reacts with O2 B) it inhibits glycolysis C) makes nervous system inactive D) reacts with haemoglobin

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Question 2773

The supersonic jets cause pollution by the thinning of?

A) CO2 layer B) SO2 layer C) O3 layer D) O2 layer

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Question 2774

The true statement about ‘green house effect’ is that it is ?

A) caused by combination of many gases B) caused by CO2 C) caused only by CO2, CFC, CH4 and NO2 gases D) None of these

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Question 2775

Mobile combustion accounts?

A) 10-20% of air pollution B) 40-50% of air pollution C) 50-60 % of air pollution D) 5-10 % of air pollution

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Question 2776

Air pollution can be of?

A) natural origin B) artificial or man made origin C) both a and b D) b only

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Question 2777

Which of the following is a secondary pollutant?

A) CO2 B) CO C) O3 D) SO2

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Question 2778

Particulate pollutants are?

A) are small solid particles and liquid droplets B) liquid droplets in atmosphere C) are small solid particles released into the atmosphere D) all of these

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Question 2779

Which of the radioactive material is largely associated with bone cancer?

A) radium-226 B) thorium-232 C) Strontium-90 D) iodine

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Question 2780

Radiation can cause?

A) cardiac disease B) Haemophilia C) leukemia D) bone marrow diseases

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