Chemistry 5 Marks Questions

After watching a programme on TV about the presence of carcinogens (cancer causing agents) Potassium bromate and Potassium iodate in bread and other bakery products, Rupali a Class XII student decided to make others aware about the adverse effects of these carcinogens in foods. She consulted the school principal and requested him to instruct the canteen contractor to stop selling sandwiches, pizzas, burgers and other bakery products to the students. The principal took an immediate action and instructed the canteen contractor to replace the bakery products with some protein and vitamin rich food like fruits, salads, sprouts, etc. The decision was welcomed by the parents and the students.
After reading the above passage, answer the following questions:

1. What are the values (at least two) displayed by Rupali?
2. Which polysaccharide component of carbohydrates is commonly present in bread?
3. Write the two types of secondary structures of proteins.
4. Give two examples of water soluble vitamins.

After watching a programme on TV about the presence of carcinogens (cancer causing agents) Potassium bromate and Potassium iodate in bread and other bakery products, Rupali a Class XII student decided to make others aware about the adverse effects of these carcinogens in foods. She consulted the school principal and requested him to instruct the canteen contractor to stop selling sandwiches, pizzas, burgers and other bakery products to the students. The principal took an immediate action and instructed the canteen contractor to replace the bakery products with some protein and vitamin rich food like fruits, salads, sprouts, etc. The decision was welcomed by the parents and the students.
After reading the above passage, answer the following questions:

1. What are the values (at least two) displayed by Rupali?
2. Which polysaccharide component of carbohydrates is commonly present in bread?
3. Write the two types of secondary structures of proteins.
4. Give two examples of water soluble vitamins.

After watching a programme on TV about the presence of carcinogens (cancer causing agents) Potassium bromate and Potassium iodate in bread and other bakery products, Ritu a class XII student decided to aware others about the adverse effects of these carcinogens in foods. She consulted the school principal and requested him to instruct canteen contractor to stop selling sandwiches, pizza, burgers and other bakery products to the students. Principal took an immediate action and instructed the canteen contractor to replace the bakery products with some proteins and vitamins rich food like fruits, salads, sprouts etc. The decision was welcomed by the parents and students. After reading the above passage, answer the following questions:

1. What are the values (at least two) displayed by Ritu?
2. Which polysaccharide component of carbohydrates is commonly present in bread?
3. Write the two types of secondary structure of proteins.
4. Give two examples of water soluble vitamins.

Shyam went to a grocery shop to purchase some food items. The shopkeeper packed all the items in polythene bags and gave them to Shyam. But Shyam refused to accept the polythene bags and asked the shopkeeper to pack the items in paper bags. He informed the shopkeeper about the heavy penalty imposed by the government for using polythene bags. The shopkeeper promised that he would use paper bags in future in place of polythene bags.Answer the following:

1. Write the values (at least two) shown by Shyam.
2. Write one structural difference between low-density polythene and high-density polythene.
3. Why did Shyam refuse to accept the items in polythene bags?
4. What is a biodegradable polymer? Give an example.