Page 2 - HOME ASSIGNMENT-3 (PRACTICAL WORKSHEET)

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4. A drop of colourless liquid was placed on blue litmus paper. The litmus paper

turned red. The liquid could be. How can you change it to blue again?

MCQs
1. A student added red litmus solution to ‘A’ and observed that it changed into blue.
When she added another solution ‘B’ to ‘A’ in excess, she observed that the solution
turned red. What are the nature of the solutions A and B?

a. Solution A is basic and B is acidic.
b. Solution A is acidic and B is basic
c. Both A and B are acidic
d. Both A and B are basic
2. Four students performed the reactions of dilute HCl acid and a solution of sodium
hydroxide with zinc metal and solid sodium carbonate separately. They reported the
possible reaction by (V) no reaction by (x). In which of the following sets all
observations are correct.

Four students were asked by their teacher to arrange the set-up I-IV as given below
3. and identify the gas evolved in each case, if any.

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