Q7 of 26 Page 70

What is the anode mud?

The insoluble impurities settle down at the bottom of the anode (the positively charged electrode) are known as anode mud.


More from this chapter

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5

A non-metal X exists in two different forms Y and Z. Y is the hardest natural substance, whereas Z is a good conductor of electricity. Identify X, Y and Z.

 6

Name the process by which sulphide ores are concentrated.

 8

Give reason for the following:

(a) Sodium metal is kept immersed in kerosene.


(b) Blue colour of copper sulphate solution disappear when some aluminium powder is added in it.

 9

The electronic configurations of three elements X, Y and Z are X -2, 8; Y – 2, 8, 7 and Z – 2, 8, 2. Which of them is a metal and a non-metal?