The fiber least prone to catch fire is 1). nylon 2). (b)(2 ) polyester 3). cotton 4). terylene
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1. Marsh gas contains-
2. Match the List-I with List-II and select the correct answer using the codes given below the listsList-I (Green house gas)List-II(Major source)F.Carbondioxide1.Enteric fermentation in cattleG.Methane2.Burning of fossilH.Chloroflro carbons3.Mercury compounds in waste waterJ.Nitrous oxide4.Nylon...
3. The purest form of water is
4. 92 Which of the following chemical materials is responsible for the depletion of ozone layer in the atmosphere ?
5. Phosphorus is kept in water because
6. Catalytic converters are generally made from :
7. Which of the following is not a method of preparing oxygen?
8. Tetra ethyle lead (TEL) is
9. Which one of the following pairs is NOT correctly matched
10. Process of loosing electrons is known as _____.
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