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Chemistry
5. Acids, Bases and Salts
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Q17 of 27 Page 29

Form a sentence using the following words – baking soda, ant bite, moist, effect, neutralised, rubbing.

The effect of ant bite can be neutralized by rubbing moist baking soda on the affected area.


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15

Look at Figure 5.1 which shows solutions taken in test tubes A,B,C and D. What colour is expected when a piece of red litmus paper is dropped in each test tube? Nature of the solutions is given in the table for your help.


16

While playing in a park, a child was stung by a wasp. Some elders suggested applying paste of baking soda and others lemon juice as remedy. Which remedy do you think is appropriate and why?

18

Match the substances in Column I with those in Column II

19

Fill the blanks in the following sentences

(a) Lemon juice and vinegar taste ___________ because they contain ___________.


(b) Turmeric and litmus are _________ acid-base indicators.


(c) Phenolphthalein gives _________ colour with lime water.


(d) When an acidic solution is mixed with a basic solution, they _________ each other forming _________ and water.

Questions · 27
5. Acids, Bases and Salts
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