PDF chapter test TRY NOW
Analyse the following statements and choose the correct answers.
1. It was an early evening. Shelly saw a path of light through a window gap inside a room. It was sunlight. She observed that a tiny substances scattered in light. Which one of the following phenomenon is responsible here?
2. Salt is a regular edible product of food. As it is obtained from the sea, it need to be pure. Which one of the following purification technique used for generation of salt?
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