Last seen: Sep 10, 2021
(a) Baking soda. (b) Washing soda.
Tartaric acid.
Sodium carbonate.
Sodium carbonate.
Hydrochloric acid.
Plaster of Paris.
Calcium hydroxide.
The common name is Gypsum and the chemical name is calcium sulphate dihydrate.
CuSO4.5H2O has blue colour due to the presence of water of crystallization.
False, Copper sulphate crystals are always wet due to the presence of water of crystallisation in them.
(i) Na2CO3. (ii) Na2CO3.10H2O.
(a) NaHCO3. (b) Na2CO3.
(a) Universal indicator paper is used to measure the pH. (b) Lemon juice with pH = 2.5 is the most acidic. (c) Household ammonia with pH = 12 is t...
(a) The pH in a person’s mouth becomes lower after each meal because bacteria present in the mouth breaks down the sugar to form acids. (b) If the p...
(a) Wasp stings are alkaline in nature since they are treated using acids like vinegar. (b) Bee stings are acidic in nature since they are treated u...
(a) Solution A turns universal indicator blue to purple so it is basic in nature and will turn litmus blue. (b) Solution B turns universal indicator...