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Which one of the following is a disaccharide : Starch, Maltose, Fructose, Glucose ?
Concept: Biomolecules in the Cell > Carbohydrates >> Oligosaccharides
What are the hydrolysis products of sucrose?
Concept: Classification of Carbohydrates
What is the role of t-butyl peroxide in the polymerization of ethene?
Concept: Types of Polymerisation Reactions - Addition Polymerisation or Chain Growth Polymerisation
Write the mechanism of free radical polymerization of ethene.
Concept: Types of Polymerisation Reactions - Addition Polymerisation or Chain Growth Polymerisation
Write the names and structure of the monomers of the following polymers:
Nylon-6, 6
Concept: Types of Polymerisation Reactions - Condensation Polymerisation Or Step Growth Polymerisation
Write the names of monomers used for getting the following polymer:
Neoprene
Concept: Introduction to Polymers >> Classification of Polymers Based on Molecular Forces
Write the names of monomers used for getting the following polymer:
Teflon
Concept: Introduction to Polymers >> Classification of Polymers Based on Structure
Seeing the growing cases of diabetes and depression among young children, Mr Lugani, the principal of one reputed school, organised a seminar in which he invites 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 health survey in most of the school 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.
Concept: Chemicals in Food - Artificial Sweetening Agents and Food Preservatives
Mr. Roy, the principal of one reputed school organized a seminar in which he invited parents and principals to discuss the serious issue of diabetes and depression in students. They all resolved this issue by strictly banning the junk food in schools and to introduce healthy snacks and drinks like soup, lassi, milk etc. in school canteens. They also decided to make compulsory half an hour physical activities for the students in the morning assembly daily. After six months, Mr. Roy conducted the health survey in most of the schools and discovered a tremendous improvement in the health of students.
After reading the above passage, answer the following :
(i) What are the values (at least two) displayed by Mr. Roy ?
(ii) As a student, how can you spread awareness about this issue ?
(iii) What are tranquillizers ? Give an example.
(iv) Why is use of aspartame limited to cold foods and drinks ?
Concept: Chemicals in Food - Artificial Sweetening Agents and Food Preservatives
On the occasion of World Health Day, Dr. Satpal organized a ‘health camp’ for the poor farmers living in a nearby village. After check-up, he was shocked to see that most of the farmers suffered from cancer due to regular exposure to pesticides and many were diabetic. They distributed free medicines to them. Dr. Satpal immediately reported the matter to the
National Human Rights Commission (NHRC). On the suggestions of NHRC, the government decided to provide medical care, financial assistance, setting up of super-speciality hospitals for treatment and prevention of the deadly disease in the affected villages all over India.
(i) Write the values shown by
(a) Dr. Satpal
(b) NHRC
(ii) What type of analgesics are chiefly used for the relief of pains of terminal cancer ?
(iii) Give an example of artificial sweetener that could have been recommended to diabetic patients
Concept: Chemicals in Food - Artificial Sweetening Agents and Food Preservatives
How many atoms constitute one unit cell of a face-centered cubic crystal?
Concept: Number of Atoms in a Unit Cell
What is the formula of a compound in which the element Y forms hcp lattice and atoms of X occupy 2/3rd of tetrahedral voids?
Concept: Close Packed Structures - Formula of a Compound and Number of Voids Filled
Why does a solution containing non-volatile solute have higher boiling point than the pure solvent ?
Concept: Vapour Pressure of Liquid >> Vapour Pressure of Liquid- Liquid Solutions
Why is elevation of boiling point a colligative property?
Concept: Colligative Properties and Determination of Molar Mass >> Elevation of Boiling Point
Calculate the freezing point of the solution when 31 g of ethylene glycol (C2H6O2) is dissolved in 500 g of water.
(Kf for water = 1.86 K kg mol–1)
Concept: Colligative Properties and Determination of Molar Mass >> Depression of Freezing Point
Define the following term: Primitive unit cells
Concept: Crystal Lattices and Unit Cells
Define the following term:
Ferromagnetism
Concept: Properties of Solids: Magnetic Properties
Henry’s law constant for CO2 in water is 1.67 × 108 Pa at 298 K. Calculate the quantity of CO2 in 500 mL of soda water when packed under 2.5 atm CO2 pressure at 298 K.
Concept: Solubility >> Solubility of a Gas in a Liquid
What happens if external potential applied becomes greater than E°cell of electrochemical cell?
Concept: Electrochemical Cells
How much charge is required for the reduction of 1 mol of Zn2+ to Zn?
Concept: Nernst Equation - Introduction
