When exposed to air silver objects and jewellery become

The given apparatus is required to test for sonority.

The simple test for sonority is

To test malleability of a substance, the given apparatus is required

What are the materials required to test a metal for electric conductivity?

What precautions do you take while burning sulphur?

If you burn sulphur in your lab, it gives

Which of the following is used to test for acidity of a substance?

If you dip blue litmus paper in sulphur dioxide solution, it will change into

If you add Zn in copper sulphate $(CuS{O}_4)(CuSO\_4)$ solution, you may observe in the beaker

Early men used these metals to make his tools first

… is highly malleable.

… mixture is used in currency coins.

Maximum metals are obtained in … state.

Most ductile metal is