GENERAL SCIENCE CLASS 8 MCQS
General
Science MCQs Click Here
Show Answers
چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
کسی نامعلوم طبعی مقدار کا اسی قسم کی معلوم معیاری مقدار سے موازنہ کرنے کے عمل کو ____ کہتے ہیں؟
Observation
Measurement
Experimentation
Calculation
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Measurement involves comparing an unknown quantity (the measured) with a standard quantity (the unit) to determine its value.This process is a fundamental aspect of science and engineering, allowing us to quantify physical properties and phenomena.
لکڑی کا ایک مستطیل ٹکڑا میز پر 3 مختلف طریقوں (اے، بی، سی) میں رکھا جاتا ہے۔ میز پر لکڑی کا دباؤ ____ ہوگا؟
Maximum in position A
Maximum in position B
Maximum in position C
None
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
When the rectangular piece of wood is kept in position A.Its entire weight is concentrated on a smaller area, resulting in maximum pressure on the table.
ہم سطح سمندر سے زیادہ یا کم اونچائی پر اندرونی چوٹ یا اونچائی کی بیماری محسوس کر سکتے ہیں کیونکہ؟
Our body adjusts to pressure changes rapidly
Our body adjusts to pressure changes slowly
Our body does not adjust to pressure changes
Our body only adjusts to pressure changes upwards
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
When we ascend or descend too quickly , our body struggles to adapt to the change in pressure, leading to altitude sickness or other injuries.This is why it's important to acclimate to higher elevations gradually, allowing our body to adjust to the decreasing pressure.
ماحولیاتی دباؤ کا حساب ____ سے کیا جاتا ہے؟
Height of water column in a pipette
Volume of gas in a cylinder
Resistance in an electric circuit
Height of mercury column in barometer
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
A barometer measures atmospheric pressure by measuring the height of a mercury column that is supported by the pressure of the surrounding air.The higher the mercury column , the higher the atmospheric pressure.
باریک ٹھوس ذرات یا مائع بوندوں، ہوا میں یا کسی اور گیس کی معطلی کو ____ کہتے ہیں؟
Pneumatic
Hydraulic
Aerosols
None
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Aerosols are a type of mixture where solid particles or liquid droplets are suspended in a gas, like air. Examples of aerosols include mist, fog, dust, pollen, and spray cans.
مائع کے دباؤ کی مقدار _____ کے اضافے کے ساتھ بڑھ جاتی ہے؟
Depth
Volume
Temperature
Surface tension
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
The pressure exerted by a liquid at a given point increases with the depth of the liquid, as the weight of the liquid above increases.This is described by Pascal's Law , which states that the pressure at a point in a fluid is proportional to the depth of the fluid.
Volume is increased
Temperature is increased
Area of contact is decreased
Area of contact is increased
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Pressure increases when Area of contact is decreased. This is because the same force is concentrated on a smaller area, resulting in a higher pressure (P = F/A), similar to how a sharp object can exert more pressure than a blunt object.
سائنس کی وہ شاخ جو حرکت میں مائع کے عملی استعمال سے متعلق ہے ____ کہلاتی ہے؟
Hydrology
Pneumatic
Hydraulics
Hydrostatics
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Hydraulics is a branch of science and engineering that focuses on the use of liquids to transmit power, generate motion, and control systems.It is widely used in various industries , including construction, manufacturing, and aerospace.
پاسکل کا اصول _____ میں بڑے پیمانے پر استعمال ہوتا ہے؟
Electrical System
Hydraulic System
Pneumatic System
Mechanical System
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Pascal's Principle is the fundamental principle behind the operation of hydraulic systems.They are used in a wide range of applications, including construction equipment, brakes, lifts, and presses. It allows for the multiplication of force and motion, making it a crucial concept in engineering and technology.
Magnitude and Direction
Velocity and Acceleration
Mass and Volume
Energy and Momentum
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Force is a vector quantity. It means it has both magnitude (amount of force) and direction (the way it is applied).
