How can you apply green chemistry for the following ?
(a) To control photochemical smog.
(b) To avoid use of halogenated solvents in dryclening and that of chlorine in bleaching.
(c ) to reduce use of synthestic detergents.
(d) To reduce the consumption of petrol and diesel.

How can you apply green chemistry for to avoid use of halogenated solvents in drycleaning and that of chlorine in bleaching

Cause- The government has recently increased its taxes on petrol and diesel by about 10 percent. Which of the following can be a possible effect of the above cause? (a) The petroleum companies will reduce the price of petrol and diesel by about 10 percent. (b) The petroleum companies will increase the prices of petrol and diesel by about 10 percent. [c] The petroleum companies will increase the prices of petrol and diesel by about 5 percent. (d) The petrol pump will stop selling petrol and diesel till the taxes are rolled back by the government. (e) None of above.

Which of the following practices involve green chemistry ? (i) Substitute CFCs by environmental friendly HFCs and other compounds (ii) Replace halogenated solvent by liquid CO_(2) for drycleaning , (iii) Use of H_(2)O_(2) for bleaching instead of Cl_(2) (iv) Use of tamarind seeds to clean municipal and industrial waste water.

Which of the following is/are true? (a) Sucrose is a non reducing sugar (b) Glucose is oxidised by bromine water (c) Glucose rotates plane polarized light in clock-wise direction (d) Fructose is oxidised by bromine water. Select the correct answer using the codes given below:

The gland A is attached to the wind pipe in the human body. The gland A makes and secretes a hormone B which controls the metabolism of carbohydrates, fats and proteins in the body. The non-metal element C is necessary for the formation of hormone B. The deficiency of C in the diet can cause a deficiency of hormone B in the body leading to a disease D in which the neck of a person appears to be swollen. People are advised to use salt e in cooking food so as to avoid disease D. (a) Name (i) gland A, and (ii) hormone B. (b) What is the element C? (c) Name one type of food which can provide sufficient C in the diet of a person. (d) Name (i) disease D, and (ii) salt E.

Properties of the elements are given below. Where would you locate the following elements in the periodic table ? (a) A soft metal stored under kerosene (b) An element with variable (more than one) valency stored under water. (c) An element which is tetravalent and forms the basis of organic chemistry (d) An element which is an inert gas with atomic number 2 (e) An element whose thin oxide layer is used to make other element corrosion resistant by the process of ''anodising''.