Metal And Its Compounds - Study Mode
[#271] Which one of the following statements is correct?
Correct Answer
(B) Calcium carbonate is an ingredient of toothpaste
[#272] The first metal used by man was
Correct Answer
(C) copper
[#273] Gas produced with the reaction of the soda with hydrochloric acid.
Correct Answer
(C) Carbon dioxide
[#274] Malachite is an ore of . . . . . . . .?
Correct Answer
(A) copper
[#275] Which of the following is lighter than water?
Correct Answer
(B) Sodium