Chemistry Chapter 2 Class 9 MCQ
Addition of cupric oxide to glass gives which colour?
1. Red
2. Green
3. Orange
4. Brown
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Addition of copper sulphate to glass gives which colour?
1. Yellow
2. Red
3. Blue
4. Purple
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Metal oxides or metal salts are added to liquid glass to get
1. Colourless glass
2. Colour glass
3. Condensed glass
4. Brittle glass
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Which of the following can be used in making electrical bulbs
1. Soda glass
2. Pyrex glass
3. Quartz glass
4. Hard glass
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The glass used for laboratory glass ware is
1. pyrex glass
2. borosilicate glass
3. flint glass
4. both (1) and (2)
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The glass used for optics is
1. Quartz galss
2. Flint glass
3. Boro silicate glass
4. Soft glass
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The glass used for window glass is
1. Pyrex glass
2. Soda glass
3. Quartz glass
4. Flint glass
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Different kinds of glasses are obtained by varying the composition of
1. Cullet
2. Metal oxide
3. Batch
4. None of these
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Annealing strengthens the
1. cement
2. polymer
3. ceramic
4. glass
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The process of cooling liquid glass is called
1. Pelverisation
2. Polymerization
3. Annealing
4. Hydrogenation
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