KMU CAT PAST PAPER 21-08-2024
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
انسانی جسم میں کتنی ہڈیاں ہیں؟
200
206
270
300
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Explanation
The human body typically has 206 bones
At the time of birth, there are 270 bones which fuse with time to come to a total of 206 bones.
The total bones of our body can be divided into:
the axial skeleton (80) the appendicular skeleton (126) The newborn child has 300 bones.
Longest bone: Femur (thigh bone)
Shortest : Stapes ( one of the 3 small bones inside the ear)
The human head has 22 bones.
0.01 g
0.02 g
0.03 g
0.04 g
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Explanation
The molar mass of CaCO₃ is approximately 100 g/mol.
The molar mass of calcium (Ca) in CaCO₃ is about 40 g/mol.
The proportion of calcium in CaCO₃ is 40/ 100 = 0.4
Therefore, in 0.1 g of CaCO₃, the amount of calcium is 0.1×0.4=0.04 g.
Lighter nuclei
Heavy nuclei
Intermediate nuclei
None of these
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Explanation
The binding energy per nucleon is highest for intermediate-sized nuclei (e.g., iron).
Both lighter and heavier nuclei have lower binding energies per nucleon compared to these intermediate nuclei.
Voltage amplifiers
Oscillators
Current amplifiers
Regeneration
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Explanation
Transistors primarily act as current amplifiers in a circuit.
They can increase the current flowing through a circuit, which can also be used for voltage amplification and switching.
1 field
2 fields
3 fields
4 fields
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Explanation
A moving charged particle is surrounded by both an electric field and a magnetic field.
The electric field is due to the charge itself, and the magnetic field is generated due to the particle's motion.
Second
Weber
Henry
Tesla
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Explanation
Ohm × Farad is equivalent to a second (s).
This is because the unit of capacitance ( Farad )
multiplied by resistance ( Ohm ) gives time (s),
which represents the time constant in RC circuits.
Its size decreases
Its size increases
No change
None of these
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Explanation
When a soap bubble is charged, the repulsive forces between like charges on the surface of the bubble cause the bubble to contract, decreasing its size.
Butane (C₄H₁₀)
Pentane (C₅H₁₂)
Hexane (C₆H₁₄)
Heptane (C₇H₁₄)
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Explanation
Among the listed liquids, heptane (C₇H₁₄) has the greatest molecular weight
Thus the strongest intermolecular forces, lead to the lowest vapor pressure at the same temperature
Dispersion forces
Dipole-dipole forces
Hydrogen bonding
Greater molar mass
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Explanation
Ammonia (NH₃) has a higher boiling point than phosphine (PH₃)
Ammonia exhibits hydrogen bonding, a stronger intermolecular force than the dipole-dipole forces in phosphine.
Pressure decreases
Temperature decreases
Pressure and temperature both decrease
None of these
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Explanation
When a gas expands suddenly (an adiabatic expansion), it does work on the surroundings without any heat exchange.
As a result, the internal energy of the gas decreases, leading to a decrease in temperature.