Question 1 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0b8f59b460d7261f346.png' />
From the above image ,Complete the crossword given below with the help of clues.
Across 3: Substance made up of large number of smaller molecules
Question 2 :
State True or False. Acrylic is a fibre similar to wool .
Question 4 :
The material which is commonly used for making kitchen containers is
Question 5 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0b7f59b460d7261f344.png' />
From the above image ,Complete the crossword given below with the help of clues.
Across 1: Substance used as synthetic wool
Question 6 :
The synthetic fibres are also known as animal made fibres .
Question 7 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0b7f59b460d7261f344.png' />
From the above image ,Complete the crossword given below with the help of clues.
Across 1: Substance used as synthetic wool
Question 8 :
State True or False.A polymer is a chain of many small units joined together called monomers
Question 10 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0b8f59b460d7261f346.png' />
From the above image ,Complete the crossword given below with the help of clues.
Across 3: Substance made up of large number of smaller molecules
Question 11 :
State True or False. Burning of plastics and synthetic fibres produces lots of poisonous gases causing air pollution.
Question 12 : <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 13 :
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 14 :
The material which is commonly used for making kitchen containers is
Question 15 : <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 16 :
Which of the following is not a common property of plastics?
Question 17 : <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 18 :
State True or False. Burning of plastics and synthetic fibres produces lots of poisonous gases causing air pollution.
Question 19 :
State True or False.A polymer is a chain of many small units joined together called monomers
Question 20 :
The synthetic fibres are also known as animal made fibres .
Question 21 :
Terrycot is made by mixing two types of fibres. Write the names of the fibres.
Question 22 :
Terrycot is made by mixing two types of fibres. Write the names of the fibres.
Question 23 : <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 25 :
State True or False . A plastic used for making crockery is melamine .
Question 26 : <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 27 :
Indicate whether the following statements are True or False. Most of the plastics are biodegradable.
Question 29 :
Indicate whether the following statements are True or False. Synthetic fibres do not melt on heating.
Question 31 :
State True or False. Cotton is a natural polymer whose chemical name is cellulose.
Question 32 : <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 33 : <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 34 :
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 35 :
The most suitable material for the preparation of handles of cooking utensils is
Question 37 : <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 38 :
Indicate whether the following statements are True or False. It is risky to wear synthetic clothes while working in the kitchen.
Question 39 :
Indicate whether the following statements are True or False. The fabric terywool is obtained by mixing terylene and wool.
Question 40 :
State True or False . A plastic used for making crockery is melamine .
Question 41 :
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 42 : <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 43 :
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 44 :
Indicate whether the following statements are True or False. The fabric terywool is obtained by mixing terylene and wool.
Question 45 : <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 46 : <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 47 : <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 48 :
Which of the following is not a common property of plastics?
Question 49 :
Indicate whether the following statements are True or False. It is risky to wear synthetic clothes while working in the kitchen.
