Question

M is an element in the form of a powder. M burns in oxygen and the product obtained is soluble in water. The solution is tested with litmus. Write down only the word which will correctly complete the following sentence.

1. If M is a metal, then the litmus will turn ______.
2. If M is a non-metal, then the litmus will turn ______.
3. If M is a reactive metal, then ______ will be evolved when M reacts with dilute sulphuric acid.
4. If M is a metal, it will form ______ oxide, which will form ______ solution with water.
5. If M is a non-metal, it will not conduct electricity in the form of ______.

Answer 1

1. If M is a metal, then the litmus will turn blue.
2. If M is a non-metal, then the litmus will turn red.
3. If M is a reactive metal, then hydrogen gas will be evolved when M reacts with dilute sulphuric acid.
4. If M is a metal, it will form basic oxide, which will form alkaline solution with water.
5. If M is a non-metal, it will not conduct electricity in the form of graphite.