UAF ENTRY TEST PAST PAPER 08-08-2016
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
Increases
Decreases
Remains constant
May increase or decrease
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Explanation
As a reaction proceeds, the rate of reaction decreases because the concentration of reactants decreases, leading to fewer collisions and slower reaction.
Liver
Bone
Blood
Brain
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Explanation
Human tissues, particularly in organs like the brain and kidneys, ca n contain approximately 85% water.
The exact percentage varies by tissue type, but many, especially soft tissues, are largely composed of water.
C₃ pathway
C₄ pathway
C₂ pathway
C₅ pathway
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Explanation
The Calvin cycle is also known as the C3 cycle or the light-independent reactions of photosynthesis.
It can also be referred to as the Calvin-Benson cycle or the reductive pentose phosphate cycle (RPP cycle).
Adhesion
Cohesion
Tensile
Imbibitions
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Explanation
Cohesion refers to the attraction between water molecules due to their polar nature, allowing them to "stick" together.
Arthropoda
Bacteria
Algae
Mushroom
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Explanation
The ecological role of fungi as decomposers is primarily paralleled by bacteria.
Both fungi and bacteria are essential decomposers in ecosystems,
Breaking down dead organic matter and releasing nutrients back into the environment .
While fungi are known for their ability to decompose complex organic materials like cellulose and lignin
Bacteria also play a crucial role in breaking down a wide range of substances.
Together, they form the core of the decomposition process,
Which is vital for nutrient cycling and maintaining ecosystem health
Radial and determinate
Spiral and determinate
Radial and intermediate
Spiral and pre-determinate
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Explanation
Spiral cleavage is characterized by diagonal cleavage planes that are not symmetrical between the poles, resulting in unequal blastomeres arranged in a spiral pattern.
Determinate cleavage means that the fate of each blastomere is predetermined early on, meaning each cell has a specific developmental role.
min = 1.22 λ
min = 1.22 a
min = 1.22 λ/D
min = 1.52 D
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Explanation
This formula comes from the Rayleigh criterion for the minimum resolvable angle (θₘᵢₙ) in optical systems like lenses or telescopes:
theta_{min} = frac{1.22 , lambda}{D} θ min = 1.22 λ/D
Where:
This equation gives the angular resolution or resolving power of the lens.
½ mr²w²
½ Iw²
mr²w²
½ mrw²
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Explanation
The general formula for rotational kinetic energy is:
K . E . = 1 /2 I ω^ 2
Where:
For a hoop (thin ring) of massm and radius r:
I = m r^2
So, plugging into the formula:
K . E . =1/2 ⋅ m r^ 2 ⋅ ω^ 2 = 1/2 I ω 2
Decreases
Increases
Remains constant
Becomes zero
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Explanation
With a temperature rise, the velocity of sound increases.
This is because warmer temperatures cause molecules to move faster, allowing sound waves to propagate more quickly through the medium
Specifically, the speed of sound is directly proportional to t he square root of the absolute temperature.
For every degree Celsius increase in temperature, the speed of sound in air increases by approximately 0.6 m/s
Telescope
Galvanometer
Ammeter
Avometer
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Explanation
An optical instrument uses lenses or mirrors to manipulate light,
A telescope uses lenses or mirrors to collect and focus light from distant objects, making them appear closer and larger.