BASICS OF EVERY DAY SCIENCE EDS
Basics of Every Day Science EDS
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
ہوا کی ایک موٹی تہہ جو زمین کو گھیرے ہوئے ہے اسے کیا کہتے ہیں؟
Ozone
Atmosphere
Stratosphere
Hydrosphere
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Explanation
The atmosphere is a thick layer of air that surrounds the Earth. This protecting it from harmful radiation and supporting life. It is composed of 78% nitrogen, 21% oxygen, and trace amounts of other gases.
مندرجہ ذیل میں سے کون سی آنکھ میں لینس کی شکل بدلنے میں مدد کرتا ہے؟
Ciliary Muscles
Extraocular Muscles
Iris Muscles
Conjunctiva Muscles
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Explanation
Ciliary muscles adjust the curvature of the lens to focus on near or distant objects. This process is called accommodation in the human eye.
دو دھاتی پٹی _____ میں استعمال ہوتی ہے؟
Electric fan
Electric motor
Electric iron
Electric toaster
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Explanation
A bimetallic strip bends with heat due to different expansion rates of two metals. It is used in electric irons as a thermal switch to regulate temperature.
جس میں توسیع اور سکڑاؤ کا استعمال نہیں ہوتا؟
A thermometer
An electric iron
A railway track
An electric fan
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Explanation
Electric fans work using a motor, not by expansion or contraction of materials. Devices like thermometers, electric irons, and railway tracks rely on thermal expansion and contraction.
ہائیڈرولک پاور سسٹم میں کون سا سیال استعمال ہوتا ہے؟
Water
Oil
Non-compressible fluid
All of these
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Explanation
Hydraulic power systems use fluids to transmit power and motion, and the most common fluids used are:
Water (in hydraulic systems like water supply networks, fire suppression systems, and hydroelectric power plants) Oil (in hydraulic systems like heavy machinery, construction equipment, and industrial manufacturing) Non-compressible fluids (like hydraulic fluids, brake fluids, and transmission fluids) that are specifically designed for hydraulic systems.
وہ مقداریں جن کی دوسری مقداروں کے لحاظ سے وضاحت نہیں کی جا سکتی ____ کے نام سے جانا جاتا ہے؟
Derived physical quantities
Mathematical quantities
Fundamental physical quantities
None of these
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Explanation
Fundamental quantities are basic and independent, like mass, length, and time . They cannot be defined in terms of other physical quantities.
اگر بند گیس کے کنٹینر کو گرم کیا جائے تو کنٹینر کے اندر کیا ہوگا؟
Pressure will be increased
Pressure will be decreased
Pressure will remain constant
Volume will be increased
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Explanation
In a rigid (non-moveable) container, heating the gas increases the kinetic energy of gas molecules. This causes more frequent and forceful collisions with the walls, leading to increased pressure .
ایم آر آئی یا سی ٹی اسکین کا نتیجہ ______ کی امیج ایکسپلوریشن سے ہوا؟
Moon
Saturn
Jupiter
Sun
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Explanation
The technology behind MRI and CT scans evolved from image processing techniques originally developed to analyze images of the Moon during space missions. NASA's space research led to advances in computerized imaging, later adapted for medical diagnostics .
اگر حرکت پذیر پسٹن کے ساتھ بند گیس کنٹینر کو گرم کیا جاتا ہے۔ کیا ہو گا؟
Volume will be decreased
Volume will remain constant
Volume will be increased
Pressure will be increased
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Explanation
Heating a gas in a container with a movable piston increases the kinetic energy of gas molecules. This causes the gas to expand, pushing the piston outward and increasing the volume.
8000 N
12000 N
16000 N
20000 N
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Explanation
Pressure = Force / Area 4000 N/m2 = Force / 3 m2 Force = Pressure x Area Force = 4000 N/m2 x 3 m2 Force = 12000 N Since weight is equal to force , the weight of the truck is 12000 N.
