Evaluation of light, I. Choose the correct answer. 1. Blue appearance of the sky is due to LKZHZ2 a. reflection b. refraction c. interference d. scattering 2. Who is known as Missile Man of India? a. Sir. C.V. Raman b. Dr. APJ Abdul Kalam c. Dr. M.S. Swaminathan d. Ramanujam An example for reversible change is a. melting of ice b. burst of balloon c. burning paper d. change of milk into curd 4. Chemical reactions are example for a. reversible change b. irreversible change c. both of them d. none of them 5. Which of the following is not an organic waste? a. Flowers b. Vegetables c. Fruits d. Battery II. Fill in the blanks. 1. The book 'Wings of fire' was written by 2. A stretched rubber band comes back to normal shape. It is an example for changes. 3. Most of the physical changes are 4. News paper is a waste. 5. Wastes from house and apartments are called waste. III. Match the following. Bud to flower Reversible change India 2020 Dr. A.P.J. Abdul Kalam Recyclable waste Organic waste Melting of ice Irreversible change Paper Vegetables
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Answer:
1. scattering .
2.Dr APJ Abdul kalam .
3.melting of ice.
4.irreversible change.
5.Battery.
2. physical change.
3.reversible change.
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Palak, Sandhya and Tripti are three partners sharing profits in the ratio of 3:2:1. They withdrek partners in the following cases! (1) Palak withdrew at the beginning of each quarter. (in Sandhya withdrew at the end of each quarter (i) Tripti withdrew at the middle of each quarter.
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