Chemistry X I Model Paper

Chemistry X I 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) 86 KJ/mole
b) 76 KJ/mole
c) 98 KJ/mole
d) 53 KJ/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 existence 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) 3 Types
c) 4 Types
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 hybridization 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 molecules of two atoms forming a covalent bond is called:

a) Bond Energy
b) Bond Length
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) Initial concentration of reactions
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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