IBA STS JEST PAST PAPERS 2018 TO TILL DATE
JEST 5
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
اصل مقام یا جگہ جہاں ایک جاندار رہتا ہے اور دوبارہ پیدا ہوتا ہے وہ ____ ہے؟
- Habitat
- Ecosystem
- Community
- Population
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Explanation
A habitat is the specific place where an organism lives and reproduces.It provides the food, water, shelter, and conditions necessary for survival.
- Nephron
- Neuron
- Muscle cell
- None of these
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Explanation
A neuron is the basic structural and functional unit of the nervous system
It often shown with a long axon, dendrites, and cell body.
It transmits electrical impulses in the body.
نظام انہضام میں غذائی نالی کا کام ____ ہے؟
- Absorb nutrients from food
- Mix food with digestive enzymes
- Pass the food to the Stomach
- Store food temporarily
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Explanation
- The oesophagus is a muscular tube that connects the pharynx (throat) to the stomach.
- Its main function is to transport food from the pharynx to the stomach through peristalsis (wave-like muscle contractions).
آپٹیکل سینٹر اور پرنسپل فوکس کے درمیان فاصلے کو ____ کہا جاتا ہے؟
- Focal Length
- Focal Point
- Optical Centre
- Centre of Curvature
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Explanation
Focal length is the distance between the optical center of a lens or mirror and its principal focus.It determines how strongly the lens or mirror converges or diverges light.
- Volume
- Mass
- Time
- None of these
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Explanation
Momentum is the product of an object’s mass and its velocity → Momentum = Mass × Velocity.
Momentum is given by the formula: p = mv
It is a vector quantity.
It is conserved in closed systems during collisions.
It depends on mass and speed, not on acceleration, so momentum is independent of acceleration.
ایک جسم جاری رکھے ہوئے ہے جب تک کہ کسی غیر متوازن قوت کے ذریعہ اس پر عمل نہ کیا جائے۔ یہ ______ ہے؟
- First law of motion
- Second law of motion
- Third law of motion
- None of these
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Explanation
First law of motion is also called the Law of Inertia.
It states that an object will stay at rest or move with constant velocity unless an external force changes its state.
دو ماسس ایک دوسرے کو راغب کرتے ہیں۔ فورس کو ______ کہا جاتا ہے؟
- Push
- Friction
- Gravitational force
- None of these
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Explanation
Gravitational force is the natural force of attraction between any two masses in the universe.
This force is always attractive.
It acts along the line joining the centers of the two masses.
کھانے کا سلسلہ ہمیشہ ____ سے شروع ہوتا ہے؟
- Producers
- Consumers
- Decomposers
- Predators
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Explanation
A food chain always begins with producers.
It usually green plants or algae, that make their own food through photosynthesis.
They provide the initial energy source for all other organisms (consumers and decomposers) in the food chain.
- Improved
- Latest
- Revised
- Modern
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Explanation
Contemporary means جدید یا نیا
Modern means جدید یا نیا
- -2, -3
- 2, -3
- 2,3
- None of these
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Explanation
(x - 2)(x + 3) = 0
This implies:
x - 2 = 0 or x + 3 = 0
x = 2 or x = -3
