Question

A student was given four unknown solutions in test-tubes marked A, B, C and D and asked to test them with universal indicator solution. He observed that on putting universal indicator solution, the solutions A, B, C and D turned blue, orange, green and red respectively. The test-tube which contains sodium chloride solution is (1) A
(2) B
(3) C
(4) D

Answer 1

Answer:C

Explanation:Na

Answer 2

The test-tube which contains sodium chloride solution is  C

Explanation:

• NaCl formation is a case in point of a neutralization reaction. It is formed by the strong acid and strong base reactions.
• It has a benevolent disposition, so it reflects a commonly defined green colour.

Neutralization reaction :-

• When an acid and a substrate react to form liquid and a salt, a neutralization reaction requires the mixture of H+ ions and OH-ions to produce water.
• A strong acid and huge base is neutralized with a pH equal to 7.
• Neutralizing a super acid and poor base will have a pH lower than 7, and alternatively, the resultant pH will be higher than 7 when a good base neutralizes a less  acid.

Therefore the correct answer is Option(3) C