Metal And Its Compounds - Study Mode

[#181] Which of the following is not true about manganese?
Correct Answer

(B) Affects its resistance at high temperature levels

[#182] Which of the following mixtures is used to purify Gold?
Correct Answer

(C) Aqua regia

[#183] The most commonly used substance in fluorescent tubes are
Correct Answer

(C) Mercury Vapour and Argon

[#184] Which of the following is the use of sodium carbonate, which is an alkali? 1. Producing sodium compounds such as borax. 2. To remove permanent hardness of water. 3. Use in glass, soap and paper industries.
Correct Answer

(D) 1, 2 and 3

[#185] Which is used in storage batteries?
Correct Answer

(B) Lead