XI CHEMISTRY | ONLINE ONE MARK TEST | QUARTERLY PORTION

Chemistry One Mark Test (Lessons 1, 2, 3,4,6,7,8,11,12)

Time: 10 Mins | Marks: 10

1. Carbon forms two oxides, namely carbon monoxide and carbon dioxide. The equivalent mass of which element remains constant?

(a) Carbon (b) Oxygen (c) Both carbon and oxygen (d) Neither carbon nor oxygen

2. What is the mass of precipitate formed when 50 ml of 8.5% solution of AgNO3 is mixed with 100 ml of 1.865% potassium chloride solution?

(a) 3.59 g (b) 7 g (c) 14 g (d) 28 g

3. Which of the following contain same number of carbon atoms as in 6 g of carbon-12.

(a) 7.5 g ethane (b) 8 g methane (c) both (a) and (b) (d) none of these

4. According to the Bohr Theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon?

(a) n=6 to n=1 (b) n=5 to n=4 (c) n=5 to n=3 (d) n=6 to n=5

5. What is the maximum numbers of electrons that can be associated with the following set of quantum numbers? n=3, l=1 and m=-1

(a) 4 (b) 6 (c) 2 (d) 10

6. The total number of orbitals associated with the principal quantum number n=3 is

(a) 9 (b) 8 (c) 5 (d) 7

7. The temperature at which real gases obey the ideal gas laws over a wide range of pressure is called

(a) Critical temperature (b) Boyle temperature (c) Inversion temperature (d) Reduced temperature

8. The value of universal gas constant depends upon

(a) Temperature of the gas (b) Volume of the gas (c) Number of moles of the gas (d) units of Pressure and volume

9. Heat of combustion is always

(a) positive (b) negative (c) zero (d) either positive or negative

10. Which of the following is not a thermodynamic function?

(a) internal energy (b) enthalpy (c) entropy (d) frictional energy