Recent questions tagged metals and nonmetals

+2 votes

1 answer

You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice.

asked Apr 7, 2019 in Class 10 by kratos

+3 votes

1 answer

Zinc is the metal which **** in the middle of the activity series. This metal is extracted from its sulphide ore.

asked Apr 7, 2019 in Class 10 by kratos

+3 votes

1 answer

What is the nature of non-metal oxide?

asked Apr 7, 2019 in Class 10 by kratos

+3 votes

1 answer

'M' is an element which is out of Cu, Fe, Al, Na. It shows the following properties:

asked Apr 7, 2019 in Class 10 by kratos

+2 votes

1 answer

What chemical process is used for obtaining a metal from its oxide ?

asked Apr 7, 2019 in Class 10 by kratos

+1 vote

1 answer

What is meant by refining of metals? In the electrolytic refining of metal M, name the cathode, anode and the electrolyte.

asked Apr 7, 2019 in Class 10 by kratos

+1 vote

1 answer

(i) "sodium is a highly reactive metal and it cannot be obtained from its oxide by heating with carbon." Give reason.

asked Apr 5, 2019 in Class 10 by kratos

+2 votes

1 answer

Which Mineral is known as ‘Liquid Gold ?

asked Apr 4, 2019 in Class 10 by kratos

+1 vote

1 answer

Give reasons for the following : (i) Aluminum is a reactive metal but is still used for packing food articles.

asked Apr 4, 2019 in Class 10 by kratos

+3 votes

1 answer

Stainless steel contains (1) Fe, Cr, Ni, C

asked Apr 3, 2019 in JEE by kratos

+2 votes

1 answer

Give reason. Chemical reaction does not take place when copper is added to iron sulphate solution. Why?

asked Apr 3, 2019 in Class 10 by kratos

+3 votes

1 answer

Halide ores present in the following : Bauxite, Calamine, Galena, Cryolite, Copper glance, Cinnabar.

asked Apr 2, 2019 in Class 12 by kratos

+1 vote

1 answer

Thermite is a mixture of iron oxide and

asked Mar 30, 2019 in Class 12 by kratos

+3 votes

1 answer

A non-metal X which is the largest constituent of air combines with hydrogen when heated in

asked Mar 29, 2019 in Class 10 by kratos

+3 votes

1 answer

Name a metal that does not react with cold as well as hot water but reacts with steam.

asked Mar 29, 2019 in Class 10 by kratos

+2 votes

1 answer

Potassium, sodium, magnesium are high reactive metals and occur as chlorides in nature. Suggest and explain the suitable method

asked Mar 29, 2019 in JEE by kratos

+1 vote

1 answer

A metal that exists as a liquid at room temperature is obtained by heating its sulphide in the presence of air.

asked Mar 29, 2019 in Class 10 by kratos

+3 votes

1 answer

You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice.

asked Mar 28, 2019 in Class 10 by kratos

+3 votes

1 answer

When calcium carbide is added to water, the gas that is evolved is :

asked Mar 27, 2019 in Class 11 by kratos

+2 votes

1 answer

(a) Write down the electronic configuration of (i) sodium atom, and (ii) chlorine atom.

asked Mar 27, 2019 in Class 10 by kratos

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