PPSC PAST PAPERS ALL MCQS 2023 OF EVERYDAY SCIENCE
PPSC 5 Years Past Papers Click here
Show Answers
چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
کھانا پکانے کے تیل کو ____ کے عمل سے سبزی گھی میں تبدیل کیا جا سکتا ہے؟
Hydrogenation
Oxidation
Distillation
None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Hydrogenation is a chemical process that adds hydrogen to unsaturated fats in cooking oil, solidifying it into ghee. This process increases the oil's melting point and shelf life. It turning liquid oil into a semi-solid form.
انسانی جسم میں سب سے زیادہ مقدار میں موجود عنصر کیا ہے؟
Hydrogen
Nitrogen
Oxygen
Carbon
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Oxygen makes up about 65% of the human body by mass. It mainly due to its presence in water and organic compounds. It is essential for respiration and various biochemical processes in the body.
ڈیوڈینم جیجنم کس کا ایک حصہ ہے؟
Liver
Kidney
Large intestine
Small intestine
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
The small intestine is the longest part of the digestive system.
It extends from the stomach (pylorus) to the large intestine (cecum).
It consists of three parts: duodenum, jejunum and ileum.
کس نے کہا کہ جرثومے جانور ہیں؟
Darwin
Mendel
Leeuwenhoek
Lois Pasteur
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Antonie van Leeuwenhoek , a cloth merchant by trade, is credited for the discovery of single-celled microorganisms. He called them “ wee animalcules ” (little animals).
چاند کے مراحل کس وجہ سے ہوتے ہیں؟
We can see only that part of moon which reflects light towards us
Our distance from the moon keeps changing
The shadow of earth covers only a part of moon surface
None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Phases of the moon occur because we can see only that part of the moon which reflects light towards us.
The changing shape of the bright part of the Moon that we see is called its phase.
The moon is illuminated because it reflects the light from the sun.
The part of the moon facing the sun is lit up.
The part facing away from the sun is in darkness.
سولر پلیٹ کس قسم کے سیل پر مشتمل ہے؟
Fuel cell
Photo voltaic cell
Both A & B
None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
A solar panel, consisting of many photovoltaic cells.
A photovoltaic (PV) cell is an energy harvesting technology .
It converts solar energy into useful electricity through a process called the photovoltaic effect.
ایک عام آدمی فی منٹ میں کتنی بار سانس لیتا ہے؟
14-18 times
10-15 times
20-25 times
None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
A child respires around 26 times per minute.
Normal man respires 14-18 times per minute.
If the CO2 concentration in blood increases , the rate of breathing also increases .
When CO2 is dissolved in the blood , then blood becomes slightly acidic .
The brain picks up the change and adjusts the breathing to get rid of CO2 from the blood.
Sudden Heavy floods
No rain for a long time
Heavy showers
Winds and rains
All of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Cyclones are usually accompanied by high rainfall.
heavy showers mean: A period of heavy rain
Cyclones mean ایک قسم کی طوفان
heavy showers زیادہ بارش/ بھاری بارش
ND16-3-2023
نوزائیدہ بچے کی ہڈیوں کی تعداد کتنی ہوتی ہے؟
206
250
300
360
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
A newborn infant has about 300 bones. It fuse to form the 206 bones typical in adults. The human skull has 22 bones. The hand contains 27 bones.
کون سے عوامل ابلتے ہوئے نقطہ کو متاثر کرتے ہیں؟
Air pressure
Temperature
Pressure
None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
For water, the boiling point is 100ºC at a pressure of 1 atm
The boiling point of water decreases at higher altitudes due to Low atmospheric pressure
The boiling point of water increases with increased atmospheric pressure
The boiling point of water decreases with decreased atmospheric pressure
ND17-1-2023
