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MDCAT Past Papers - UHS - Chemistry - Chap No 1 - 2025 Quiz

Attempt 10 MCQs on MDCAT Past Papers - UHS - Chemistry - Chap No 1 (Year 2025) | Quiz 1

1. Which one of the following is a coinage metal :



2. Consider the given balanced chemical equation: 2H2 + O2 = 2H2O. If 4 g of H2 reacts with 32 g of O2 to produce 28 g of H2O, what is the percentage yield of the reaction? (Molar mass of H2 = 2 g/mol, O2 = 32 g/mol and H2O = 18 g/mol)



3. Correct arrangement of orbital according to size of hybridized orbitals?



4. Consider the equation H1+O1→H2O, what volume of hydrogen gas is required to produce 1 mol of water at standard temperature & pressure?



5. A chemical reaction has a theoretical yield of 25 g, but only 20 g of product was obtained. What is the percentage yield of the reaction?



6. Number of unpaired electrons present in the ground state of Fe3+ are (Atomic number of Fe=26).



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