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Class 9th Computer Science Model Question Paper – 2080

Group A 1. Answer the following questions in one sentence: (6x1=6) a) List any two features of a computer system. b) Why are…

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Standardize HCl Solution Using Na2CO3 as Primary Standard

THEORY: Reaction: 2HCl + Na2CO3 —-----------> 2NaCl + H₂O + CO₂ Ionically,…

Prepare 100 mL of Decinormal Sodium Carbonate Solution

THEORY: Mol. wt. of Na₂ CO3 = 2 x 23 + 12…