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Metal oxides react with acids to form salt and water, showing basic nature. Example: Na2O+HCl→NaCl+H2O\{Na}_2\{O} + \{HCl} → \{NaCl} + \{H}_2\{O}Na2O+HCl→NaCl+H2O Non-metal oxides (like CO₂) are generally acidic.
45.22 of 499.98% + 399.99 ÷ 20.18 = ?
3, 4, 10, 33, 136, ?
45.1298% of (14.032 - 75.98) + 27.87% of √40001 = 449.98% of 24.098 + ?
1224.86% of √6399.98 = (399.99/4.99)% of (? ÷ 6.91 + 39.87)
The profit earned when an article is sold for Rs. 2,000 is the same as the loss incurred on selling it for Rs. 1,200. Find the selling price of the arti...
? = 44.78% of 839.91 – 48.12% of 774.89 + 55.77% of 1024.85
(95.89% of 625.15 + 36.36% of 499.89) ÷ 6.02 = ? – 269.72