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Test: Our Environment - 4


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25 Questions MCQ Test General Science(Prelims) by IRS Divey Sethi | Test: Our Environment - 4

Test: Our Environment - 4 for Class 10 2022 is part of General Science(Prelims) by IRS Divey Sethi preparation. The Test: Our Environment - 4 questions and answers have been prepared according to the Class 10 exam syllabus.The Test: Our Environment - 4 MCQs are made for Class 10 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Our Environment - 4 below.
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Test: Our Environment - 4 - Question 1

Which of the following is non-biodegradable ?

Test: Our Environment - 4 - Question 2

“Nitrous oxide is a green house gas” the above statement is-

Detailed Solution for Test: Our Environment - 4 - Question 2

Like other greenhouse gases, nitrous oxide absorbs radiation and traps heat in the atmosphere, where it can live for an average of 114 years, according to the EPA.

Test: Our Environment - 4 - Question 3

Find the incorrect statement-

Test: Our Environment - 4 - Question 4

Which of the following is not a terrestrial ecosystem

Test: Our Environment - 4 - Question 5

Which of the following constitute a food chain ?

Test: Our Environment - 4 - Question 6

Which of the following constitutes the forth trophic level ?

Test: Our Environment - 4 - Question 7

“Flow of energy is unidirectional”. It means that-

Test: Our Environment - 4 - Question 8

The maximum concentration of chemicals get accumulated in

Test: Our Environment - 4 - Question 9

DDT, a pesticide is-

Test: Our Environment - 4 - Question 10

Green house gases are-

Test: Our Environment - 4 - Question 11

Which of the following is biodegradable-

Test: Our Environment - 4 - Question 12

Montreal protocol became effective in-

Test: Our Environment - 4 - Question 13

Ozone depletion has resulted in-

Test: Our Environment - 4 - Question 14

Micro-organisms belongs to the group of-

Test: Our Environment - 4 - Question 15

Function of an ecosystem involves-

Test: Our Environment - 4 - Question 16

The driving force of an ecosystem is-

Test: Our Environment - 4 - Question 17

A food chain always starts with-

Test: Our Environment - 4 - Question 18

According to 10%10% law, the energy available to each successive level is _________ of previous level

Test: Our Environment - 4 - Question 19

The formula of Ozone is _______

Test: Our Environment - 4 - Question 20

The decomposers in an ecosystem-

Test: Our Environment - 4 - Question 21

In due given food chain, suppose the amount of energy available at third trophic level is 50 KJ, what will be the energy available at due producer level ?

Detailed Solution for Test: Our Environment - 4 - Question 21

Only 10% of the energy present is given to the consumer at the next level, of the total energy the level/animal has.
Therefore, if 4th Level = 5kJ
3rd Level = 50kJ
2nd Level = 500kJ
Producer = 5,000kJ

Test: Our Environment - 4 - Question 22

In the following groups of materials, which group contains only non biodegradable items.

Test: Our Environment - 4 - Question 23

An example of man-made ecosystem is -

Detailed Solution for Test: Our Environment - 4 - Question 23

Examples of man-made ecosystems are orchards, home aquarium, zoo, botanical gardens and park. These ecosystems are sustained by human interventions. Aquarium and zoo ecosystem, for example, cannot survive without the care of humans. Man-made ecosystems are created for specific purposes.

Test: Our Environment - 4 - Question 24

A food chain consist of

Detailed Solution for Test: Our Environment - 4 - Question 24

A food chain is a series of plants/animals which are interrelated in the form of an organism being eaten as food by the other. A food chain consists of producers and consumers. In the given food chain, plants are producers. The animals eating plants are called primary consumers and animals eating primary consumers are called secondary consumers. 

Thus, the correct answer is 'Producers and consumers.'

Test: Our Environment - 4 - Question 25

The process of eating and being eaten is called-

Detailed Solution for Test: Our Environment - 4 - Question 25

The food chain is a sequence of populations or organisms through which food and energy are passed on an ecosystem with the members of each trophic levels. A food chain shows who is eating whom. Here, organisms of higher trophic level derive its nutrients from organisms of a lower trophic level.

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