Multiple choice questions HOTS XXIX — task. Science CBSE, Class 9.

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1. Rahul's mother was preparing to make pickles. She cut the vegetables into small pieces and put them in the sun for a few hours. Rahul curiously observed his mother's activities and asked her why she had put the salted vegetables in the sun. What could be the most appropriate answer to his question?

So, the cut vegetables can absorb vitamin D from sunlight as a nutrient
To enhance the flavor of the pickle
So, that the vegetables become dry by losing all the water through diffusion and evaporation
To ensure that the vegetables absorb the salt evenly and properly

2. Anjali wanted to have rice and kidney beans (rajmah) for her meal. She asked her mother to prepare it for the next day. At night, her mother took a cup of kidney beans and put them in a container filled with water. She covered the container and left it overnight. The next day, it was noticed that the kidney beans had swollen up and were now ready to be cooked. This phenomenon, which causes the kidney beans to swell up, is known as what?

(i) Osmosis
(ii) Diffusion
(iii) Endosmosis
(iv) Exosmosis

Choose the correct option among the following:

Both (i) and (iii)
Both (i) and (iv)
Only (iii)
Only (i)

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79. Multiple choice questions HOTS XXIX

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