PPSC PAST PAPERS EVERYDAY SCIENCE MCQS 2026
پیپر میں جانے سے
پہلے یہ سوالات و سلیبس ایک بار ضرور پڑھ کر جائیں
PPSC 25
years Past Papers Click here
چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
- 50 mm
- 75 mm
- 100 mm
- 150 mm
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
In a cloudburst, rainfall specifically exceeds 100 millimetres (about 4 inches) per hour over a localized area.
- Hinge joints
- Synovial joints,
- Pivot joints
- Fixed joints
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- The shoulder is primarily a ball-and-socket joint (glenohumeral joint),
- The elbow is a hinge joint (ulnohumeral joint).
- Both are classified as synovial joints,
- Freely movable and surrounded by a fluid-filled capsule.
- Silane
- Sand
- Silicon carbide
- Silicone
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Silicon oxide is commonly known as silica or silica sand
- It is the primary component of sand, quartz, and glass.
- Positive
- Neutral
- Negative
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- An anion is a negative charge (or negatively charged ion).
- The 'n' in anion stands for negative
- Formed when non-metal gains electrons.
- They gain one or more than one electron.
- Formation: Gained electrons.
- Attracted to the anode (positively charged electrode).
- Generally larger than their parent atoms.
____
Cations are ions that are positively charged
Last updated 15-03-2026
- Watt (W)
- Decibel (dB)
- Watt per square meter (W/m²)
- . Newton (N)
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Sound intensity is the amount of sound power passing through a unit area.
The SI unit of sound intensity is watt per square meter (W/m²).
It shows how strong or weak a sound wave is at a particular point.
Sound intensity decreases as the distance from the source increases.
Decibel (dB) is used to measure sound intensity level, not the actual intensity
Last updated 15-03-2026
جو جانور صرف جانور کھاتے ہیں انہیں _____ کہا جاتا ہے؟
- Insectivores
- Carnivores
- Omnivores
- Herbivores
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Carnivores are animals that eat only meat, primarily from other animals.
- Examples of carnivores include lions, tigers, bears, wolves, and sharks.
Additional information:
- Animals that eat plants exclusively are herbivores.
- Animals that eat both plants and meat are called omnivores.
Last verified on 07-03-2026
- m s⁻²
- rad s²
- rad s⁻¹
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
SI unit of angular acceleration is rad per second per second or rad/s2.
Angular acceleration = rate of change of angular velocity.
Angular velocity unit = radians per second (rad/s).
Angular acceleration = Δω/Δt = rad/s ÷ s.
Simplifies to radian per second squared (rad/s²).
SI recognizes radian as dimensionless, but rad/s² is standard for rotation.
Last updated question 25 feb 2026
- Protonephridium
- Metanephridium
- Malpighian tubule
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Metanephridia are well-developed excretory organs.
They have an open funnel (nephrostome) and tubules.
They efficiently remove wastes and regulate body fluids, making them evolutionarily advanced.
- AV node
- SA node
- Bundle of His
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- The SA (sinoatrial) node initiates the heartbeat.
- It produces rhythmic electrical impulses automatically.
- It sets the normal heart rate, so it is called the natural pacemaker.
- Located in the right atrium
- It is the dominant pacemaker because its cells generate action potentials faster than other parts of the conduction system.
- Blood meets water with higher O₂ content continuously
- Blood and water flow in same direction
- Minimal diffusion
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Water and blood flow in opposite directions.
This is called the countercurrent mechanism.
It maintains a constant oxygen concentration gradient.
Blood always contacts water with higher O₂ level.
This ensures maximum oxygen absorption in fish gills.