home by my
7. Water
It is the most important constituent of food. It is
spoon of salt and a few drops of
essential for life. Human body contains about a litre of water. This mixture
70% water by weight. Water is needed by our chemist shops also
Multiple Choice Questions (MCQs)-
Tick the correct options:
1 Which of the following vitamins is necessary for normal growth of bones and teeth
(a) vitamin A (b) vitamin B
(c) vitamin C
Answers
Answer:
Hope it will help you
Explanation:
Zinc granules on treating with an acid X, form the zinc sulphate (ZnSO4) salt along with the evolution of a gas Y which burns with a pop sound when brought near to a burning candle. Identify the acid X and gas evolved Y.
a. X- Sulphuric acid and Y- Oxygen gas
b. X- Hydrochloric acid and Y- Oxygen gas
c. X- Sulphuric acid and Y- Hydrogen gas
d. X- Hydrochloric acid and Y- Hydrogen gas
Answer. c. X- Sulphuric acid and Y- Hydrogen gas
3. The figure given below represents the experiment carried out between conc. sulphuric acid and sodium chloride, which react with each other to form HCl gas.
Answer:
vitamin C
Explanation:
plz mark as brainlist
follow me than I'll follow u.
u can check my profile whoever follow me I follow him/her in revert.