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Chemistry Fsc Part 1 Online Test MCQs With Answers
Question # 1
Safe and reliable method of drying crystals is through.
Choose an answer
Pressing it between folds of filter paper
Drying it in oven
Evaporation of solution
Vacuum desiccator
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Question # 2
What is bond order.
Choose an answer
Number of unpaired electrons
Number of paired electrons
Number of electrons present in antibonding molecular orbital
Number of bond formed between two atoms after overlap
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Question # 3
Which gas has highest e/m ratio
Choose an answer
Hydrogen
Helium
Nitrogen
Oxygen
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Question # 4
Which has zero potential energy.
Choose an answer
When H atom is independent
When two H atoms combine to form H2 molecule
When two H atoms super impose to each other
When two H atoms have weak attraction between them
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Question # 5
Half -Life for a given reaction is doubled if initial concentration is doubled. The order of reaction is.
Choose an answer
0
1
2
3
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Question # 6
The pressure of oxygen inside the bomb calorimeter is.
Choose an answer
100 atm
50 atm
25 atm
20 atm
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Question # 7
In a electrolytic cell the electrons flow from
Choose an answer
Cathode to anode
Anode to cathode
From cathode to anode or opposite, depending upon the nature of electrolyte
All of the above
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Question # 8
Vapour pressure of a substance does not depend upon.
Choose an answer
Temperature
Intermolecular forces
Surface area
Physical state of water
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Question # 9
The electron in a subshell is filled according to formula.
Choose an answer
2n
2
2(2l+1)
(2l+1)
None of these
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Question # 10
The highest temperature above which a gas cannot be liquified, no matter how much the pressure is applied is known as
Choose an answer
Boiling temperature
Consulate temperature
Absolute zero
Critical temperature
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Question # 11
The volume occupied by 1.4 g of N2 at S.T.P is
Choose an answer
2.24 dm3
22.4 dm3
1.12 dm3
112 cm3
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Question # 12
Which is not used as drying agent in a desiccator.
Choose an answer
Cacl2
NaCl
P2O5
Salica Gel
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Question # 13
Half -Life period of a first order reacting is independent of.
Choose an answer
Initial concentration of the compound
Conditions of temperature
Presence of catalyst
All the above
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Question # 14
Select the correct answer out of the following alternative suggestions London dispersion forces are the only forces present among the.
Choose an answer
Molecules of water in liquid state
Atoms of helium is gaseous state at high temperature.
Molecules of solid I2
Molecule of H-Cl gas
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Question # 15
If four moles of sulphur dioxide are oxidized to sulphur trioxide, how many moles of oxygen are needed.
Choose an answer
0.5
1.0
1.5
2.0
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Question # 16
When a reaction occurs in many steps than the slowest step is.
Choose an answer
Mechanism step
Rate determining step
enthalpy determining step
None of the above
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Question # 17
On which factor boiling point of a liquid depends.
Choose an answer
Amount of the liquid
Shape of the container of the liquid
Type of burner used for boiling
External pressure
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Question # 18
As compared to pure atomic orbitals the hybrid orbitals have.
Choose an answer
Low energy
High energy
Same energy
None of these
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