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______ and ______ fibres are obtained from animals.
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Silk fibres come from ______ of silk ______.
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Match the items of Column I with the items given in Column II.
| Column I | Column II | ||
| (a) | Yak wool | (i) | Sheared hair |
| (b) | Angora goats | (ii) | Silkworm |
| (c) | Mulberry leaves | (iii) | Tibet and Ladakh |
| (d) | Scouring | (iv) | Jammu and Kashmir |
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Write a caption for the figures given in Figure.
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Write a caption for the figures given in Figure.
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Write a caption for the figures given in Figure.
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Write a caption for the figures given in Figure.
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A beggar wrapped himself with a few layers of newspaper on a cold winter night. This helped him to keep himself warm because ______.
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While constructing a house in a coastal area, in which direction should the windows preferably face and why?
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When the soil is too basic, plants do not grow well in it. To improve its quality what must be added to the soil?
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A solution changes the colour of turmeric indicator from yellow to red. The solution is ______.
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On adding phenolphthalein indicator to a colourless solution, no change is observed. What is the nature of this solution?
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State whether the following statement is true or false. Correct the false statement.
Lime water turns red litmus blue.
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Look at figure 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.
| Test tube | Nature of Solution | Change in colour of red litmus |
| A | Neutral | |
| B | Basic | |
| C | Acidic | |
| D | Neutral |
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Phenolphthalein gives ______ colour with lime water.
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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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Which of the following is a chemical change?
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A chemical change may involve –
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Which of the following is/are true when milk changes into curd?
- Its state is changed from liquid to semi solid.
- It changes colour.
- It changes taste.
- The change cannot be reversed.
Choose the correct option from below:
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Which of the following statement is incorrect for a chemical reaction?
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