PPSC PAST PAPERS ALL MCQS 2023 OF EVERYDAY SCIENCE
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
Methane
Oxygen
Nitrogen
Hydrogen
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Explanation
Over the first 20 years after entering the atmosphere, methane has more than 80 times the warming power of carbon dioxide.
Despite the fact that CO2 has a longer-lasting effect, methane accelerates warming in the short term.
شوگر کا کیمیائی فارمولا کیا ہے؟
C12H22O11
C12H21O10
C6H12O11
C12H12O6
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Explanation
Sucrose is also known as Table sugar.
Sucrose is a type of common sugar.
It is a disaccharide, a molecule which consists of two monosaccharides: glucose and fructose.
1981
1982
1983
1984
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Explanation
On May 4th, 1984 four papers by Robert C. Gallo's group were published in Science describing a new human retrovirus virus as the probable cause of AIDS.
ایک کرونومیٹر پیمائش_________؟
Water waves
Color contrast
Time
Sound waves
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Explanation
A chronometer meter measures time .
Chronometer is to measure accurately the time of a known fixed location
for example Greenwich Mean Time ( GMT ).
کسی فرد کی زندگی کا مطالعہ کیا کہلاتا ہے؟
Psychology
Biology
Biography
Chemistry
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Explanation
A biography , or simply a bio , is a detailed description of a person's life.
It involves more than just basic facts like education, work, relationships, and death
شیشے کی تیاری میں استعمال ہونے والا عنصر کس مرکبات کی شفاف نوعیت کی وجہ سے ہے
Iodine
Silicon
Selenium
White Phosphorous
All of these
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Explanation
Silicon is a chemical element with the symbol Si and atomic number 14.
مندرجہ ذیل میں سے کون سی ویکٹر کی مقدار ہے؟
Volume
Power
Electric Current
None of these
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Explanation
An electric current is a stream of charged particles, such as electrons or ions, moving through an electrical conductor or space.
AGM 25-12-2022
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RY12-02-23
مائع نائٹروجن کا درجہ حرارت کیا ہے؟
-196 degree C
-156 degree C
-150 degree C
None of these
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Explanation
-196 degrees C is the temperature of liquid nitrogen.
Nitrogen is a gas at room temperature.
Liquid nitrogen has a boiling point at O = -196°C approximately, at atmospheric pressure.
It is a colourless, mobile liquid whose viscosity is about one-tenth that of acetone.
Liquid nitrogen is widely used as a coolant.
پھپھروں کے کینسر کی وجہ کیا ہے؟
tobacco smoking
Coal Drinks
Water pollution
None of these
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Explanation
The most important risk factor for lung cancer is tobacco smoking.
Experts estimate 85 to 90% of lung cancers are due to smoking.
پانی صاف کرنے کیلے کون سا عمل استعمال ہوتا ہے؟
Reverse Osmosis
Osmosis
Cytolysis
Turgor Pressure
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Explanation
Reverse osmosis is a water purification process
that uses a partially permeable membrane to remove ions,
unwanted molecules and larger particles from drinking water.