Chemical properties of isotopes .............
1). must be same
2). must be different
3). need not be same
4). need not be different
2. Question 16.19:What problem arises in using alitame as artificial sweetener?
4. The gas that is used in the manufacture of vanaspati ghee is :
6. Nitrogen is an essential constituent of all :
7. Which of the following elements is found in all organic compounds?
8. Question 10.13:Give the uses of freon 12, DDT, carbon tetrachloride and iodoform.
9. Water is not effective in extinguishing a fire caused by petrol because
10. Neutrino has-