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प्रश्न
Dorji has a few bottles of soft drink in his restaurant. But, unfortunately, these are not labelled. He has to serve the drinks on the demand of customers. One customer wants acidic drink, another wants basic and third one wants neutral drink. How will Dorji decide which drink is to be served to whom?
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उत्तर
- Dorji should test the drink in the three bottles by pouring a small quantity of the drink on blue and red litmus papers one by one.
- The bottle whose drink turns the blue litmus paper red will be acidic in nature.
- The drink from which the bottle turns the red litmus paper blue will be alkaline in nature.
- The drink in the bottle that does not change the colour of the litmus paper will be neutral in nature. In this way, Dorji can test acidic, basic, and neutral drinks in bottles and give them to customers.
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संबंधित प्रश्न
Name one natural source of the following acids:
(d) Tartaric acid
The indicator which produces a pink colour in an alkaline solution is:
(a) methyl orange
(b) turmeric paper
(c) phenolphthalein
(d) litmus paper
What effect does the concentration of H+ (aq) ions have on the nature of a solution?
Water is never added to acid in order to dilute it why?
Define the term ‘basicity’ of an acid.
Write balanced equation to satisfy the following statement:
\[\ce{Acid + Carbonate or bicarbonate -> Salt + water + Carbon dioxide}\]
Tartaric acid is a ______ acid.
Zn + 2 HCl → ZnCl2 +_____↑
You are provided with four test tubes containing sugar solution, baking soda solution, tamarind solution, salt solution. Write down an activity to find the nature (acidic/basic/neutral) of each solution.
A metal 'M' on reacting with dilute acid liberates a gas 'G'. The same metal also liberates gas 'G' when reacts with a base.
- Write the name of gas 'G'.
- How will you test the presence of this gas?
- Write chemical equations for the reactions of the metal with (1) an acid and (2) a base.
