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Exceptions in Physical Properties

Name the foll...

Question

Name the following:

(a) A metal which is liquid at room temperature.

(b) The process of heating an ore to a high temperature in the presence of air.

(c) The compound formed by the reaction between calcium oxide and silica.

(d) A compound which is added to lower the fusion temperature of the electrolytic bath in the extraction of aluminium.

(e) Name an allotrope of a non-metal that allows electricity to pass through it.

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Solution

(a) Mercury
(b) Roasting
(c) CaSiO₃
(d) Cryolite
(e) Graphite

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Similar questions

Q. Name the following:
(a) A metal which is liquid at room temperature.
(b) A compound which is added to lower the fusion temperature of the electrolytic bath in the extraction of aluminium.
(c) The process of heating an ore to a high temperature in the presence of air.
(d) The compound formed by the reaction between calcium oxide and silica.
(e) The middle region of the blast furnace.

Q. Question 30
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous; non-sonorous; non-malleable and are coloured.
(a) Name a lustrous non-metal.
(b) Name a non-metal which exists as a liquid at room temperature.
(c) The allotropic form of a non-metal is a good conductor of electricity. Name the allotrope.
(d) Name a non-metal which is known to form the largest number of compounds.
(e) Name a non-metal other than carbon which shows allotropy.
(f) Name a non-metal which is required for combustion.

Q. A compound added to lower the fusion temperature of the electrolytic bath in the extraction of Al is ___________.

Q. Name the following:
A compound added to lower the fusion temperature of electrolytic both in the extraction of aluminium.

Q. Name:
(a) The metal which is liquid at room temperature.
(b) The allotrope of the non-metal carbon which conducts electricity.

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