Class 11 Chemistry Model Paper 2 MCQ Test

1. The least number of molecules are present in 30g of:

2. The unit of Kc for the following reversible reaction will be:
3Fe_(s) + 4H₂O_(g) ⇌ Fe₃O_4(s) + 4H_2(g)
Which one is the unit of Kc?

3. The difference in angular momentum of electron which jumps from 3rd orbit to 6th orbit of hydrogen atom will be:

4. The vapor pressure of a liquid depends upon the following, EXCEPT:

5. A real gas that obeys Vander Wall’s equation(𝑝 + \(\frac {𝑎𝑛^2} {𝑣^2}\) + (𝑣 − 𝑛𝑏) = 𝑛𝑅𝑇) behaves like an ideal gas when:

6. The largest bound angle is present in:

7. If Principal quantum number (n) = 3, the total magnetic quantum numbers (m) will be:

8. NaCl is a crystalline solid which has a face-centered cubic structure. The Na+ ion at the face of the unit cell is shared by:

9. Which one of the following salts turns red litmus blue upon hydrolysis?

10. A gas x diffuses four times faster than SO₂ gas. The molar mass of gas x will be:

11. 20 grams of glucose dissolved in water to prepare a solution of 10% w/v concentration. The volume of the solution will be:

12. Identify the unit of rate constant (K) for the given reaction:
2A+B → Product      when Rate= K [A][B]

13. If the enthalpy of neutralization of the given reaction (a) is -57.3 kJ / mol. What would be the enthalpy change of reaction (b)?
(a)  KOH_(aq) + HCl_(aq) → KCl_(aq)+ H₂O_(l)
(b)  H₂SO_4(aq) + 2KOH_(aq) → K₂SO_4(aq)+2H₂O_(l)

14. The standard electrode potential of different elements are measured with the help of Standard Hydrogen Electrode (SHE). The standard conditions at which SHE is operated are:

15. The transition temperature of tin grey and tin white is:

16. A buffer solution resists the change of its pH upon adding small amount of strong acid or base. Which one of the following is an example of a buffer solution?

17. The 3rd line in the Balmer Series of Bohr’s Hydrogen spectrum is due to the transition of electron: