Metal And Its Compounds - Study Mode
[#221] Bauxite is the ore of
Correct Answer
(B) Aluminium
[#222] The quartz used in watches is . . . . . . . .
Correct Answer
(B) silicon dioxide
[#223] Consider the following statements 1. Galvanisation is the method of protecting steel and iron fromrusting by coating them with a thin layer of zinc. 2. Pure iron is very soft but if it is mixed with a small amount of carbon, it becomes hard and strong. 3. When iron is mixed with nickel and chromium, we get stainless steel, which is hard and does not rust. Which of the statements given above are correct?
Correct Answer
(D) 1, 2 and 3
[#224] The milkman adds a little bit of baking soda to the fresh milk:
Correct Answer
(A) To prevent acidification of milk
[#225] What is the dominant chemical present in detergent powder?
Correct Answer
(B) Sodium carbonate