Fill in the blanks with the correct option.

1. __ is an example of a carbonate mineral of iron. (Iron pyrite/Siderite)

2. The method used for extraction of a metal from its
ore depends on the of the metal. (solubility/reactivity)

3. During electrolysis of NaCl, chlorine gas is obtained
at the _. (anode/cathode)

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Solution

1. Siderite is an example of a carbonate mineral
of iron.
2. The method used for extraction of a metal from its ore depends on the reactivity of the metal.
3. During electrolysis of NaCl, chlorine gas is obtained
at the anode.

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Question 45.
A metal carbonate X on reacts with acid and gives a gas which when passed through a solution Y gives the carbonate back. On the other hand, a gas G that is obtained at the anode during electrolysis of brine is passed on dry Y, it gives a compound Z, used for disinfecting drinking water. Identify X, Y, G and Z.

Q. Fill in the blanks with the correct option.

1. ____________ is an example of a carbonate mineral of iron.
(Iron pyrite/Siderite)

2. Impurities present in an ore are often referred to as _____________.
(minerals/gangue)

3. Froth floatation is used as a method of concentration in the case of ___________ores.
(sulphide/carbonate)

Q. A metal carbonate