Question

an element was burnt and the gas evolved was collected in a test tube. Aqueous solution of the gas turned blue litmus red. The element is
(1) sodium
(2) Magnesium
(3) Zinc
(4) Sulphur​

Answer 1

Answer:

sulphur is the element when burnt turned into blue litmus red

Answer 2

Answer: 4. Sulphur​

Explanation: A litmus is an acid base indicator. An acid is a substance which changes the blue litmus to red. The aqueous solution of sulphur acts as a acid which reacts with the blue litmus to change it into red color.