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Fill in the crossword given as figure with the help of the clues provided.

(2) The solution which does not change the colour of either red or blue litmus.
(4) Phenolphthalein gives pink colour in this type of solution.
(7) Colour of blue litmus in lemon juice. Down
(1) It is used to test whether a substance is acidic or basic.
(3) It is a natural indicator and gives pink colour in basic solution.
(5) Nature of ant’s sting.
(6) It is responsible for increase in temperature during a neutralisation reaction"
Across
2. Neutral
4. Base
7. Red
Down
1. Indicator
3. Turmeric
5. Acidic
6. Heat
- Related Articles
- When it comes to the litmus paper the colour remains the same in neutral solution. If we take the blue litmus then it'll show a red colour in acidic solution and blue colour in basic solution, blue colour will remain in nuteral too. So then how can we identify that 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
- Blue litmus paper is dipped in a solution. It remains blue. What is the nature of the solution? Explain.
- On adding phenolphthalein indicator to colourless solution, no change is observed. What is the nature of this solution?(a) Basic(b) Either acidic or basic(c) Either acidic or neutral(d) Either basic or neutral
- What is the colour of phynosphtaline in basic solution?
- A solution changes the colour of turmeric indicator from yellow to red. The solution isbasicacidicneutral either neutral or acidic
- The indicator which produces a pink colour in an alkaline solution:(a) Methyl orange(b) Turmeric paper(c) Phenolphthalein(d) Litmus paper
- 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
- Generally metallic oxides are basic and non-metallic oxides are acidic in nature. Solution of which of the following oxides in water will change the colour of blue litmus to red?Sulphur dioxideIron oxideMagnesium oxideCopper oxide
- 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
- Blue litmus solution is added to two test tubes A and B containing dilute HC1 and NaOH solution respectively. In which test tube a colour change will be observed? State the colour change and give its reason.
- Blue litmus paper is dipped in a solution, it remains blue what is its nature?
- Fill in 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.
- A student puts a drop of reaction mixture of a saponification reaction first a blue litmus paper and then on a red litmus paper. He may observe that:There is no change in the blue litmus paper and the red litmus paper turns white.There is no change in the red litmus paper and the blue litmus paper turns red.There is no change in the blue litmus paper and the red litmus paper turns blue.No change in colour is observed in both the litmus papers.
- Boojho, Paheli and their friend Golu were provided with a test tube each containing China rose solution which was pink in colour. Boojho added two drops of solution ‘A’ in his test tube and got dark pink colour. Paheli added 2 drops of solution ‘B’ to her test tube and got green colour. Golu added 2 drops of solution ‘C but could not get any change in colour. Suggest the possible cause for the variation in their results.

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