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Mdcat-past-papers - DUHS - Chemistry Quiz

Filters: Board: DUHS | Subject: Chemistry |
1. 1 Atomic Mass Unit is equal to:



2. An organic compound has C = 40%, H = 6.67%, O = 53.3%. Its empirical formula is:



3. 3.0 g of Carbon on combustion gives: C+O₂→CO₂



4. Ratio of atomic mass of hydrogen to atomic mass of carbon is:



5. What volume of oxygen at STP is required to burn 500 dm³ of ethene?



6. 7.6g of CS₂ is reacted with 12.8g of O₂. Reaction: CS₂ + 3O₂ → CO₂ + 2SO₂ The limiting reactant is:



7. The total number of moles present in 2g of ethylene molecule (C₂H₄) are:



8. 9.8g of H₂SO₄ has been dissolved in excess water to ionize completely. How many H⁺ ions will it yield?



9. Small diffusion in solid is due to:



10. Graph of volume versus total pressure at constant temperature is:



11. The gas law in which the pressure is kept constant is known as:



12. The pressure 14.7 psi is equal to:



13. 1atm of nitrogen is at 25°C, its pressure has increased to 2atm at 50°C. Volume will change from 1dm³ to:



14. The comparasion of rate of diffusion of H₂ and O₂ is in the ratio of:



15. The kinetic molecular theory of gases explains:



16. The average distance covered by the gas molecule between successive collisions is known



17. Gases deviate from ideal behavior more:



18. Which of the following temperatures is referred to as the absolute zero?



19. Water rises in capillary tube because of:



20. Which of the following influences the variation of temperature at which boiling liquid takes place?



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