Question

Fill in the blanks with suitable words. 1. Hydrated iron oxide is called 2. When baking soda is added to vinegar gas is released. 3. The process of depositing a layer of zinc on iron is called 4. Dissolving salt in water is a___ change. 5. Crystals of pure substances are obtained from their solutions by 6. Two chemicals in the form of solution react forming an insoluble solid that settles down. The settled solid is called.

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Answer 1

प्रदूषण पर्यावरण को और जीव-जन्तुओं को नुकसान पहुँचाते हैं। प्रदूषण का अर्थ है -'वायु, जल, मिट्टी आदि का अवांछित द्रव्यों से दूषित होना', जिसका सजीवों पर प्रत्यक्ष रूप से विपरीत प्रभाव पड़ता है तथा पारिस्थितिक तन्त्र को नुकसान द्वारा अन्य अप्रत्यक्ष प्रभाव पड़ते हैं।

Answer 2

Answer:

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The question is too long so, sorry