This download link is referred from the post: SGBAU BSc Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university
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B.Sc. (Part-I) Home Science (Semester-II) Examination
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TEXTILE CHEMISTRY—2.5
Paper—124TC12
Time : Three Hours] [Maximum Marks : 40
Note :— (1) Attempt ALL questions.
(2) All questions carry equal marks.
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1.1 Write the classification of dyes according to their sources and chemical structure. 8
OR
1.2 Write the applicability of dyes for dyeing different types of fibres.
2.1 Explain the process of jet dyeing method and explain the batik printing. 8
OR
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2.2 What is resist printing and what is warp-beam method of dyeing.
3. Give reasons for the following : 8
3.1 Terylene cloths need less ironing.
3.2 White or coloured silk clothes should not be dried in sunlight.
3.3 Coloured cotton clothes are soaked in salt water.
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3.4 The silk clothes should not be rubbed with the brush.
4. Match A with B : 8
| A | B |
|---|---|
| 4.1 Causlic soda | (a) Removes hardness of water |
| 4.2 Detergent | (b) Sodium or potassium salts of higher fatty acids |
| 4.3 Permutit process | (c) Method of removal of temperary hardness of water |
| 4.4 Lime | (d) Method of removal of permanent hardness of water |
| 4.5 Soap | (e) Partially or totally synthetic organic compound |
| 4.6 Temporary hardness | (f) Preparation of soap |
| 4.7 Washing soda | (g) Bicarbonate of calcium, magnesium and iron |
| 4.8 Types of hardness of water | (h) Permanent and temporary hardness of water |
5. Write : 8
5.1 Write the use of optical brighteners.
5.2 How oil stain is removed by dry method ?
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5.3 Which chemicals are used for bleaching ?
5.4 What is used for starching cotton cloths ?
5.5 How lipstick stains are removed ?
5.6 What is used to starch silk cloths ?
5.7 How nail polish stains are removed ?
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5.8 What is used to make white cloths more white ?
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This download link is referred from the post: SGBAU BSc Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university