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VGS PUBLICATION-BRILLIANT-IS MATTER PURE-ESSENTIAL MATERIAL FOR EXAMINATION PURPOSE (1 MARK QUESTIONS)
- What is meant by 'Pure substances'?
01:23
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- What is a mixture?
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- What is a homogeneous mixture? Give examples.
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- What is a heterogeneous mixture? Give examples.
01:50
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- What are the factors affecting rate of dissolving?
01:21
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- When do you say that a solution is dilute solution?
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- What do you say that a solution is a concentrated solution?
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- Define suspension.
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- What is an emulsion ? Give two examples.
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- What is a colloid?
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- What is dall effect ?
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- What techique do you use to separate the colours?
01:22
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- When do we use fractional distillation method for the separation of mi...
01:31
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- What is the definition given by Lavoisier for the 'element'?
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- What is the principle involved in separation of immiscible liquids usi...
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- What is the use of glass beads in the fractional distillation column?
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- How will you separate a mixture containing kerosene and petrol (differ...
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- What type of mixture are separated by the techniques of crystallisatio...
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