Download OU B.Sc 2019 June-July 4th Semester 3114 Chemistry Question Paper

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Code No. 3114 /E

B.Sc. IV-Semester (CBCS) Examination, May / June 2019

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Subject : Chemistry

Paper — IV (SEC - 2) : (Remedial Methods for Pollution, Drinking Water and Soil)

Time : 1½ Hours Max. Marks: 40

Note : Answer ALL the questions.

PART - A (2 x 5 = 10 Marks)

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(Short Answer Type)

1. (a) Write briefly about Greenhouse effect.
2. (b) What is dissolved oxygen? Write its significance.

1. (a) What are water softeners? How are they useful in water treatment?
2. (b) What is the effect of Manganese (Mn²⁺) and (Zn²⁺) on plants?

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PART - B (2 x 15 = 30 Marks)

(Essay Type)

1. (a) Explain the sources of water pollution. Explain how to control the same.
2. (b) Write about sources of soil pollution.

1. (a) Explain the primary drinking water standards of inorganics, organics.

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2. (b) Describe the effect of nitrogen, phosphorous and sulphur on plants.

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