Write the names and structures of the monomers of the following polymer units:

(i) Nylon-6

(ii) Novolac

(iii) Buna-S

Give reason for following:

(i) O-nitrophenol is more acidic than o-methoxyphenol.

(ii) Butan-1-ol has a higher boiling point than diethyl ether

(iii) (CH₃)₃C-O-CH₃ on reaction with HI gives (CH₃)₃C-I and CH₃OH as main products and not (CH₃)₃C-OH and CH₃I.

Predict the product of following reaction.

(i)

(ii) C₆H₅-CH₂-CH₃ ?

(iii) CH₃COOH ?

(i) Which one of the following is a polysaccharide: starch, maltose, fructose, glucose?

(ii) What is the difference between native protein and denatured protein.

(iii) Write the name of vitamin responsible for the coagulation of blood.

Seeing the growing cases of diabetes and depression among young children, Mr. Lugani, the principal of one reputed school organized a seminar in which he invited parents and principals. They all resolved this issue by strictly banning junk food in schools and introducing healthy snacks and drinks like soup, lassi, milk, etc. in school canteens. They also decided to make compulsory half an hour of daily physical activities for the students in the morning assembly. After six months, Mr. Lugani conducted the health survey in most of the schools and discovered a tremendous improvement in the health of the students. After reading the above passage, answer the following questions:

(i) What are the values (at least two) displayed by Mr. Lugani?

(ii) As a student how can you spread awareness about this issue?

(iii) What are antidepressant drugs? Give an example.

(iv) Name the sweetening agent used in the preparation of sweets for a diabetic patient.