Home
Class 12
BIOLOGY
Human society started use of bronze/copp...

Human society started use of bronze/copper

A

Earlier than iron

B

Later than iron

C

Around 2000 B.C.

D

Both B and C

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

All alkali metals dissolve in anhydrous liquid ammonia to give blue colour solution. It is the ammoniated electron which is responsible for the blue colour of the solution, and the electrical conductivity is mainly due to ammoniated electron, [e(NH_3)_y]^- Dilute solutions are paramagnetic due to free ammoniated electrons, this paramagnetism decreases at higher concentration. Above 3M concentration, the solutions are diamagnetic and no longer blue but are bronze/copper-bronze coloured with a metallic luster. Ammoniated solutions of alkali metals are reducing agents due to the :

Arrange the following in the decreasing order (most important first) of their importance, for the welfare of human society. Give reasons for your answer. Biogas, Citric acid, Penicillin and Curd

Name the method used to obtain pure copper from blister copper?

The reaction in the final state of extraction of copper from copper pyrites using Bessemer's process -

The resistance of a copper wire at 20^@C is 3 Omega and at 100^@ is 3.94 Omega .Determine the temperature coefficient of resistance of copper.

Use of iron started around

Name the method used for refining of copper metal.

Which of the following facts is true about electrolysis of copper sulphate solution using copper electrodes?

How can copper be extracted from low grade copper ores?