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Ammonia is found in many household products, such as window cleaners. It turns red litmus blue. What is its nature?
Ammonia is basic in nature as it turns the colour of red litmus paper to blue.
Three liquids are given to you. One is hydrochloric acid, another is sodium hydroxide and the third is a sugar solution. How will you identify them? You have only turmeric indicator.
Blue litmus paper is dipped in a solution. It remains blue. What is the nature of the solution? Explain.
Consider the following statements:
(a) Both acids and bases change colour of all indicators.
(b) If an indicator gives a colour change with an acid, it does not give a change with a base.
(c) If an indicator changes colour with a base, it does not change colour with an acid.
(d) Change of colour in an acid and a base depends on the type of the indicator.
Which of these statements are correct?
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