11 th class chemical bonding
















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Holiday Homework - Class 10th

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1. AgNO 3 ( aq ) + NaCl( aq ) → AgCl( s ) ↓ + NaNO 3 ( aq ) FeS + H 2 SO 4 → FeSO 4 + H 2 S ↑ Consider the above mentioned two chemical equations with two different kinds of arrows ( ↑ and ↓) along with product. What do these two different arrows indicate? 1 2. Balance the given chemical equation: Al( s ) + CuCl 2 ( aq ) → AlCl 3 ( aq ) + Cu( s ) 1 3. A bud of petunia became reddish purple after first shower of rain. What does it indicate? 1 4. Write balanced chemical equations for the following reactions: (a) Silver bromide on exposure to sunlight decomposes into silver and bromine. (b) Sodium metal reacts with water to form sodium hydroxide and hydrogen gas. 2 5. Balance the following chemical equations: (a) BaCl 2 + H 2 SO 4 → BaSO 4 + HCl (b) Ca(OH) 2 + HNO 3 ...
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