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JNAN PUBLICATION-ROLE OF SUBSTANCES IN ENVIRONMENT-EXAMPLE
- Why is iodized salt necessary for our body?
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- What is pH scale? How is it important?
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- What is thyroid gland?
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- What is Goitre?
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- What is soap?
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- What is polymer?
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- What harm nylon net are causing in the environment?
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- Why cement and sand-based construction need watering?
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- How is water helpful in human body?
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- What are the two factors on which the acid-base balance of human body ...
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- What is the sources of Calcium that is essential for body?
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- In most cases, mango or other fruit or vegatable slices are coated wit...
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- Why salt is used to preserve food since antiquity?
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- Give example of some natural polymer.
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- How many types of platics are there?
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- What are detergents?
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- What are the harmful effects of DDT and other pesticides?
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- What does glass consists of? What mixed compound is used to prepare ye...
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- Define biodegradable and non-biodegradable wastes.
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- What are the general properties of common salt?
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