Q51 of 76 Page 272

Which of the following compounds is manufactured by using the chemical effect of electric current?

Sodium hydroxide (NaOH) is manufactured by using the chemical effect of electric current when a sodium salt is electrolysed.

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49

Which of the following metals are produced by the electrolysis of their molten compounds ?

A) Copper


B) Silver


C) Aluminium


D) Sodium

 50

Which of the following types of energy can be used to decompose water into its elements?

 52

Which of the following objects should not be chrome-plated ?

 53

Which of the following is a weak electrolyte ?