Question 6 :
Which of the following will be suitable for coating dress materials of fire - men ?

Question 8 :
Assertion: Plastics are not toxic when come in contact with food and medicines Reason: Plastics are used world-over because they are safe for packaging of foods, medicines and child care products

Question 11 :
Which of the following is not a characteristic of thermosetting polymers?

Question 13 :
The fibre developed in Newyork & London simultaneously is known as:

Question 15 :
Plastic __________ the percolation of water into the soil and prevents replenishment of ground water.

Question 17 :
Match the following with the correct answers.<br/>(a) Scouring&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160;(i) Yields silk fibers<br/>(b) Mulberry leaves&#160; &#160; (ii) Cleaning sheared skin&#160;<br/>(c) Sheep&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; (iii) Food of silk worm.<br/>(d) Cocoon&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160;(iv) Wool yielding animal.&#160;