Chemistry UAD — University of Agriculture D.I. Khan 2013
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BS ZOOLOGY first semester Animal diversity ZOOL 101 - university of Punjab 2025
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Literary criticism
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this paper consists of 60 marks but now we have 35 marks paper.
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Can you please tell me more past papers please because my exams are starting from next week
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Did you provide the past papers of the science of society uos?
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Paper text
Chemistry 11
BISE
D.G Khan
A/2013
Total marks 17
Objective Part
Time: 20 Minutes
Note: Write answers to the questions on the objective answer sheet provided. Four possible answers A, B, C, D to each
question are given which answer is correct, fill the relevant circle with pen ink to each question on the answer sheet
provided.
Isotopes differ in:
(a) physical properties
(b) chemical properties
(c) No. of protona
(d) Both physical and chemical properties
The percentage of oxygen in organic compounds is:
(a) determined experimentally
(b) estimated
(c) calorimetrically
(d) calculated
(ii)
The solvent extraction technique is particularly useful when the compound to be separated is:
(a) Non-volable and thermally unstable
(b) Non-volatile and thermally stable
(c) volatile and thermally stable
(d) volable and thermally unstable
(iv)
The partial pressure of O2 in lungs is:
(a) 158 ton
b) 116 torr
(c) 110 torr
(d) 760 torr
(v)
Water boils at 23°C when the external pressure is:
(a) 789 torr
(b) 1489 torr
(c) 23.7 torr
(d) 4.6 torr
(VI)
When a + b+ c and a =y = 90°, B= 90° then the cryptal system is:
(a) Hexagonal
(b) Monoclinic
(c) Euitic
(d) Tetragonal
(vii)
When a particles strike on the nucleus of Be? then emitted particle is:
(a) proton
(b) neutron
(c) neutroni
(d) r -radiations
(vili)
Orbitals having the same energy are called:
(a) Atomic orbitals
(b) Hybrid orbitals
(c) degenerate orbitals
(d) Valence orbitals
(ix)
Which of the following specie has the lowest percentage of ionic character?
(a) HCI
(b) HBr
(c) HF
(a) Hf
(x)
Which of the following molecule posses zero dipole moment?
(a) BF3
(b) HF2
(c) CHCL
(d) SO2
(xi)
(xii)
The unit of heat capacity are:
(a) KJK mol!
(b) KJKg
(c) KJK-1
(d) KJK-1mol-1
The increase in dilution of solution:
(a) increase the degree of dissociation
(b) decrease the degree of dissociation
(c) does not affect the degree of dissociation
(d) depends upon the nature of the solute
The value of JUv at higher temperature is:
(a) Equal to 14
(b)less than 14
(c) Greater than 14
(d) Variable
(xiv)
(xv)
The consulate temperature of water-aniline system is:
(a) 69.5°C
(b) 64.5°C
(c) 167°C
(d) 49.1°C
The electrolyste of aqueous solution of NaNO, at cathode liberates:
(a) sodium metal
(b) H2 gas
(c) O2 gas
(d) NO2 gas
(xvi)
Stronger the oxidizing agent, greater in the:
(a) oxidation potential
(b) redection potential
(c) EMF of the cell
(d) redox potential
(vvii)
Velocity constant in the rate of reaction when the concentration of reacrants is:
(a) zero
(b) likely
(c) two
(a) three
Answers by:
1. Muhammad Akram (Lecturer in Chemistry) Brain Degree College Khanpur [0300-6718806]
2. Siddique Bashir (Lecturer in Chemistry) Punjab College Rahim Yar Khan [0332-7953226]
