PPSC PAST PAPERS ALL MCQS 2025 OF EVERYDAY SCIENCE
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
وہ مائعات کیا ہیں جو تیزی سے بخارات بن جاتے ہیں، کیا کہلاتے ہیں؟
Volatile
Viscous
Evapurative
None of the above
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Explanation
Liquids that evaporate quickly are called volatile liquids
Volatility refers to the tendency of a liquid to vaporize or evaporate quickly , often at room temperature or below.
Examples of volatile liquids include:
Alcohol (e.g., ethanol, isopropanol) Acetone Gasoline Perfumes Essential oils
Bacteria
Fungus
Virus, often H5N1
Parasite
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Explanation
Bird flu is caused by a type of influenza A virus, often H5N1 .
It affects birds and can occasionally infect humans .
نہانے کا خوف ____ کے نام سے جانا جاتا ہے؟
Acrophobia
Claustrophobia
Ablutophobia
None
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Explanation
Ablutophobia is the fear of bathing or washing.
It is a specific phobia where individuals experience anxiety related to personal hygiene activities.
Mutualism
Commensalism
Parasitism
Symbiosis
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Explanation
Parasitism is a type of relationship where one organism ( the parasite) lives on or inside another organism (the host)
And benefits at the expense of the host, who is harmed by the interaction.
Population density
Biotic potential
Carrying capacity
Habitat capacity
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Explanation
Carrying capacity refers to the maximum number of individuals of a species that an environment can support over the long term without degrading the environment.
بیٹریاں بنانے میں عام طور پر کون سی دھات استعمال ہوتی ہے؟
Gold
Lead
Zinc
Iron
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Explanation
Lead is commonly used in lead-acid batteries, which are widely used in automotive applications and for backup power systems.
Lead-acid batteries are known for their reliability and relatively low cost.
پاکستان کرکٹ، ہاکی، اسکواش اور اسنوکر کا عالمی چیمپئن کس سال میں تھا؟
1991
1992
1994
1995
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Explanation
In 1994 Pakistan was world champion of: 1. Cricket
2. Hockey
3. Squash
4. Snooker
ماحولیاتی دباؤ ______ کے ساتھ کم ہوتا ہے؟
Increase in longitude
Decrease in altitude
Increase in altitude
Increase in latitude
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Explanation
Atmospheric pressure decreases as altitude increases.
As you go higher , the air pressure decreases because there are fewer air molecules above you , exerting less pressure.
This is why aircraft pilots must adjust their altimeters to account for changes in air pressure as they ascend or descend.
ماحول میں تبدیلیوں کے سلسلے میں سرگرمی ______ ہے؟
Stimulus
Response
Both a & b
None of these
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Explanation
A response is the organism's reaction or adaptation to a change in the environment.
Such as a change in temperature, light, or sound.
وہ مادہ جو آبی محلول میں ہائیڈروجن آئن پیدا کرتا ہے اسے ____ کہتے ہیں؟
Base
Acid
Oxidizing agent
Reducing agent
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Explanation
An acid is a substance that donates a proton (H+ ion) in a reaction, increasing the concentration of hydrogen ions in an aqueous solution.Examples of acids include hydrochloric acid (HCl), sulfuric acid (H2SO4) , and acetic acid (CH3COOH).