Metallurgy — Chemistry STD 10 — Question

Electron affinities of two elements A and B are given below:
A = 3.79 electron volts
B = 3.56 electron volts
Which of them will ionize more easily and why?

Which type of reaction will Ethene undergo?

Define the following term: Acid.

Name :
a metallic oxide soluble in excess of caustic soda solution.

Which impurities are present in bauxite ?

Explain why:
Solid sodium chloride does not allow electricity to pass through.

Name the ore from which aluminium is extracted.

Name a non-metallic element which is a conductor of electricity.

Give the name and formula of two : Non-volatile acids