Biology - Comprehensive Mock Test 178

Question 1771 Easy

Sound become hazardous noise pollution at level ?

A) Above 30 dB B) Above 80 dB C) Above 100 dB D) Above 120 dB

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Question 1772 Medium

Cyanide poisoning causes death in seconds because?

A) it causes Lysis of red B) It deneatures enymes of the heart muscle C) It causes cardiac arrest D) it breaks the electron

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Question 1773 Easy

BOD is ?

A) Biological oxygen deficit B) Biosphere oxygen demand C) Biological oxygen demand D) None of these

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Question 1774 Medium

Which of the following is the bestg indicator of SO2?

A) Bryophyte B) Lichen C) Algae D) Pteridophyte

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Question 1775 Easy

The most important indoor air pollutant is?

A) Sulphur Dioxide B) Carbon Dioxide C) Nitrogen Dioxide D) Radon gas

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Question 1776 Medium

The world’s only floating national park is situated in?

A) Manipur B) Kulakumpur C) Bilaspur D) Dispur

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Question 1777 Easy

Eco mark is given to an Indian product which is?

A) Rich in protein B) Environment friendly C) Conomically viable D) Pure and unadulterated

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Question 1778 Easy

Pyramid of energy in a ecosystem is ?

A) Always inverted B) Always upright C) Spindle shape D) Both upright and inverted depending upon ecosystem

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Question 1779 Medium

10% law of energy transfer in food chain was given by ?

A) Lindemann B) Stanley C) Tansley D) Weismann

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Question 1780 Easy

Which one lacks both root and stomata?

A) Hydrophyts B) Mesophytes C) Hygrophytes D) Halophytes

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