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31.

What is the effect of particulates on green house effect?

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32.

How is London smog formed?

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33.

What do you mean by particulates?

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34.

What type of pollution affects the sea-birds?

113 Views

35.

What is the composition of soil?

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36.

What is loam soil?

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37.

What is citation?

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38.

What is humification?

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39.

Name a gas which is colourless, tasteless and odourless but highly toxic.

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40. Which surfectants are chemically used in synthetic detergents?

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