Question 1 :
A synthetic fiber which looks like silk is obtained by chemical treatment of wood pulp. It is, therefore, known as artificial silk. What is its common name?
Question 2 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0bcf59b460d7261f34b.png ' />
From the above image, say which of the following represents the correct match for items in Column A with those in Column B.
Question 3 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0b8f59b460d7261f345.png' />
From the above image ,Complete the crossword given below with the help of clues.
Across 2: A plastic used for making containers and carry bags
Question 5 :
State True or False.A polymer is a chain of many small units joined together called monomers
Question 7 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0bbf59b460d7261f349.png' />
From the above image ,Complete the crossword given below with the help of clues.
Down 7: A polymer used for making rope
Question 10 :
State True or False . A plastic used for making crockery is melamine .
Question 12 :
State True or False. Cotton is a natural polymer whose chemical name is cellulose.
Question 13 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0bdf59b460d7261f34c.png' />
From the above image match the items in List 1 with items in List 2
Question 14 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0baf59b460d7261f348.png' />
From the above image ,Complete the crossword given below with the help of clues.
Across 4: Another name for this compound is artificial silk
Question 15 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0b9f59b460d7261f347.png' />
From the above image ,Complete the crossword given below with the help of clues.
Down 5: A type of fibre obtained naturally from cocoon
Question 16 :
Indicate whether the following statements are True or False. It is risky to wear synthetic clothes while working in the kitchen.
Question 17 :
Rohit took with him some nylon ropes, when he was going for rock climbing. Can you tell why he selected nylon ropes instead of ropes made of cotton or jute?
Question 18 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0bbf59b460d7261f34a.png' />
From the above image ,Complete the crossword given below with the help of clues.
Down 6: A synthetic fibre classified as polyester
Question 19 :
Indicate whether the following statements are True or False. The fabric terywool is obtained by mixing terylene and wool.
Question 20 :
State True or False. Acrylic is a fibre similar to wool .
Question 21 :
The most suitable material for the preparation of handles of cooking utensils is
Question 22 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0bbf59b460d7261f34a.png' />
From the above image ,Complete the crossword given below with the help of clues.
Down 6: A synthetic fibre classified as polyester
Question 23 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0bdf59b460d7261f34c.png' />
From the above image match the items in List 1 with items in List 2
Question 24 :
Indicate whether the following statements are True or False. Most of the plastics are biodegradable.
Question 25 :
Terrycot is made by mixing two types of fibres. Write the names of the fibres.
Question 26 :
State True or False.A polymer is a chain of many small units joined together called monomers
Question 27 :
State True or False. Cotton is a natural polymer whose chemical name is cellulose.
Question 28 :
Indicate whether the following statements are True or False. It is risky to wear synthetic clothes while working in the kitchen.
Question 30 :
Indicate whether the following statements are True or False. Most of the plastics are biodegradable.
