First Year Chemistry Question Paper Group First Annual 2023 conducted in Bahawalpur Board in District Rahimyarkhan, Bahawal Nagar and Bahawalpur. This Chemistry paper was given by students enrolled in Session 2020-2022, 2021-2023, 2022-24.
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Chemistry (Objective)
1st Year ( Inter Part 1)
Group 1st (Morning)
First Annual 2023
Time 20Minutes
Objective Total Marks : 17
1. A Filtration Process could be very time consuming if it were not aided by a gentle suction which is developed :
(A) If the paper covers upto its circumference of funnel
(B) If the Paper has got small sized pores in it
(C) If Stem of the funnel is so large that it dips into the filtrate
(D) If the paper fits tightly
2. The largest number of Molecules are present in :
(A) 4.8 g of C2H5OH
(B) 3.6 g of H2O
(C) 2.8 g of CO
(D) 5.4 g of N2O5
3. Phenomenon of Isotopy was first discovered by :
(A) Millikan
(B) j . Perln
(C) Soddy
(D) J.J Thomson
4. Temperature and quantity of a gas remains constant in :
(A) Charles’s Law
(B) Avogadro’s Law
(C) Boyle’s Law
(D) Dalton’s Law
5. In Order to raise the boiling point of water upto 110 °C , the external pressure should be :
(A) Between 760 Torr and 200 Tarr
(B) Between 760 Torr and 1200 Torr
(C) 765 Torr
(D) Any Value of Pressure
6. Acetone and Chloroform are soluble in each other due to :
(A) Instantaneous Dipole
(B) lon Dipole Interaction
(C) Intermolecular Hydrogen Bonding
(D) London Dispersion Forces
7. S.I. Unit of Pressure is :
(A) Torr
(B) mm of Hg
(C) Pound inch-2
(D) Nm -2
8. The nature of the positive rays depends on :
(A) Nature of Anode
(B) Nature of Cathode
(C) Nature of the Residual Gas
(D) Nature of Discharge Tube
9. The term which is not a State Function :
(A) Volume
(B) Enthalpy
(C) Work
(D) Internal Energy
10. For the reaction NaOH + HCI —–> NaCI + H2O the change in Enthalpy called :
(A) Heat of Reaction
(B) Heat of Neutralization
(C) Heat of Combustion
(D) Heat of Formation
11. Which of the given do not obey Octet Rule :
(A) CH4
(B) NH3
(C) BCl3
(D) H2O
12. The reaction for synthesis of NH3 , the value of An is ;
N2 + 3H2 <====> 2NH3
(A) + 2
(B) – 2
(C) + 1
(D) + 4
13. The Oxidation Number of Sulphur in SO42- is :
(A) 4
(B) 3
(C) 6
(D) 0
14. With Increase of 10o Celsius temperature rate of reaction double , this increase of rate is due to :
(A) Decrease in Activation Energy
(B) Decrease in the Number of Collision between Reactants Molecules
(C) Increase in the number of effective collisions
(D) Increase in Energy of Activation
15. An excess of Aqueous Silver Nitrate is added to aqueous Barium Chloride and precipitate is removed by filtration. What are main irons in Filtrate :
(A) Ag+ and NO3
(B) Ag+ , Ba2+ and NO3–
(C) Ba2+ and NO3–
(D) Ba2+, NO3– and Cl–
16. If Salt Bridge is not used between two Half Cells then Voltage :
(A) Decrease Rapidly
(B) Decrease Slowly
(C) Drops to Zero
(D) Does not change
17. A solution of 10 % w/v of Glucose , the volume in which its 1 gram mole is dissolved will be:
(A) 1 dm3
(B) 1.8 dm3
(C) 200 cm3
(D) 900 cm3
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