Which one of the following solutions would you use to test the pH of a given sample?
(1)blue litmus solution (2)red litmus solution
(3) universal indicator solution (4)mixture of red and blue litmus solution

Correct answer: (3) universal indicator solution

Explanation: Universal indicator is made up of several solutions having a wide range of pH values in order to indicate the acidity and alkalinity of solutions.

Given below is an image of a universal indicator showing the pH scale:

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Updated on: 10-Oct-2022

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An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?Baking powderLimeAmmonium hydroxide solutionHydrochloric acid
When a student added red litmus to an aqueous solution, the red litmus turned blue. Which one of the following should be added in excess so that the change in colour is reversed?(1) baking soda solution (2) lime water (3) vinegar solution (4) ammonia solution
Which one of the following would you need to identify the gas that evolve when you heat NaOH solution with zinc metal?(a) Red litmus solution(b) Blue litmus solution(c) A burning splinter/matchstick(d) Lime water
What do we observe on pouring acetic acid on red and blue litmus papers?(A) Red litmus remains red and blue litmus turns red.(B) Red litmus turns blue and blue litmus remains blue.(C) Red litmus turns blue and blue litmus turns red.(D) Red litmus becomes colourless and blue litmus remains blue.
The element whose oxide will turn red litmus solution to blue will be:sodiumsulphurcarbonphosphorus
Which of the following observations is true about dilute solution of acetic acid?(a) It smells like vinegar and turns red litmus blue.(b) It smells like onion and turns blue litmus blue.(c) It smells like orange and turns red litmus blue.(d) It smells like vinegar and turns blue litmus red.
A solution turns red litmus blue. Its pH is likely to be:(a) 1 (b) 4 (c) 5 (d) 10
A student added blue litmus solution to a colourless aqueous solution. The solution turned red. Which one of the following chemicals should be added in excess so that the change in colour is reversed?(1) ethanol solution (2) caustic soda solution (3) hydrochloric acid solution (4) vinegar solution
What is Indicator and Litmus Solution?
Solution A turns universal indicator blue to purple whereas solution B turns universal indicator orange to red.(a) What will be the action of solution A on litmus? (b) What will be action of solution B on litmus? (c) Name any two substances which can give solutions like A. (d) Name any two substances which can give solutions like B. (e) What sort of reaction takes place when solution A reacts with solution B?
Blue litmus paper is dipped in a solution. It remains blue. What is the nature of the solution? Explain.
A drop of colourless liquid was placed on blue litmus paper. The litmus paper turned red. The liquid could be :(1)dilute hydrochloric acid(2)dilute sodium hydroxide solution(3) distilled water(4)sodium bicarbonate solution
The salt whose aqueous solution will turn blue litmus to red is:ammonium sulphatesodium acetatesodium chloridepotassium carbonate
A solution turns blue litmus red. Its pH is likely to be:(a) 7 (b) 5 (c) 8 (d) 14
P and Q are aqueous solutions of sodium chloride and sodium hydroxide respectively. Which of these will turn:(a) blue litmus red? (b)red litmus blue?

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(1)blue litmus solution	(2)red litmus solution
(3) universal indicator solution	(4)mixture of red and blue litmus solution

Which one of the following solutions would you use to test the pH of a given sample?(1)blue litmus solution(2)red litmus solution(3) universal indicator solution(4)mixture of red and blue litmus solution

Kickstart Your Career

Which one of the following solutions would you use to test the pH of a given sample?
(1)blue litmus solution (2)red litmus solution
(3) universal indicator solution (4)mixture of red and blue litmus solution