Question

X is an element in the form of a powder. X burns in oxygen and the product is soluble in water. The solution is tested with litmus. Write down only the word which will correctly complete each of the following sentences:
(a) If X is a metal, then the litmus will turn ______.
(b) If X is a non-metal, then the litmus will turn ______.
(c) If X is a reactive metal, then ______ will be evolved, when X reacts with dilute sulphuric acid.
(d) If X is a non -metal, it will form _ oxide, which will form ______ solution with water.
(e) If X is a non -metal, it will not conduct electricity unless it is carbon in the form of ______.

Answer 1

(a) If X is a metal, then the litmus will turn blue.
(b) If X is a non-metal, then the litmus will turn Red.
(c) If X is a reactive metal, then Hydrogen will be evolved, when X reacts with dilute sulphuric acid.
(d) If X is a non -metal, it will form acidic oxide, which will form acidic solution with water.
(e) If X is a non -metal, it will not conduct electricity unless it is carbon in the form of graphite.