Chemistry XI - Model Paper

Chemistry XI - Model Paper

1. One mole of SO2 contains:

a) 6.02x1032 atoms of Oxygen
b) 18.1x1023 molecules of SO2
c) 6.02x1023 atoms of S
d) None of the above

2. Molecular formula of vitamin C is C6 H8 O6 , what is its empirical formula:

a) C2H3O2
b) C3H4O3
c) CH2O
d) CHO2

3. The energy of activitation of a chemical reaction without using a catalyst is 75KJ/mole. What will be its energy of activitation in presence of positive catalyst:

a) 86KJ/mole
b) 76KJ/mole
c) 98KJ/mole
d) 53KJ/mole

4. Rate of diffusion of C3H8 and CO2 is same because:

a) They are gases
b) Their molecules
c) Their Molecular mass is same
d) None of the above

5. Which gas would diffuse into the vacuum at the lowest rate:

a) NH3
b) CO
c) N2
d) SO2

6. Faraday's experiment indicates the existance of :

a) Electron
b) Proton
c) Neutron
d) Positron

7. Most of the radiations given by Radium when subjected to a magnetic field were found to split into:

a) 2 Types
b) 3Types
c) 4Types
d) None of the above

8. The Molarity o f 0.2N Solution of H2SO4 is ----------------

a) 0.1M
b) 0.3M
c) 0.01M
d) 0.2M

9. Which of the following molecules has zero dipole moment:

a) NH3
b) CH4
c) H2O
d) HCI

10. SP3 bybridization would be found in:

a) C2H2
b) C2H4
c) CH4
d) CO2

11. E+PV is called:

a) Entropy
b) Enthalpy
c) Free energy
d) None of the above

12. The distance between the moleculs of two atoms forming a covalent bond is called:

a) Bond Energy
b) Bond Lenght
c) Atomic Radius
d) Ionic Radius

13. A double arrow in a chemical equation indicates:

a) Reversible Reaction
b) Incomplete reaction
c) Irreversible reaction
d) Complete reaction

14. The value of Kc is independent of :

a) Initail concentration of ractions
b) Volume
c) Catalyst
d) Pressure

15. A solution of containing 5.85gms of NaCI/dm3 is :

a) 1 Molar
b) 0.1 Molar
c) 2 Molar
d) 0.58 Molar

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