PPSC PAST PAPERS MCQS 2004 TO 2020 OF EVERYDAY SCIENCE
PPSC 20 years Subject
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
مندرجہ ذیل میں سے کون سا توانائی کا قابل تجدید ذریعہ ہے؟
Water
Coal
Gas
None of these
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Explanation
Non-renewable energy sources :
Oil Nuclear energy Petroleum Natural gas & coal Renewable sources of energy :
Solar energy Wind energy Hydroelectric power Biomass energy Geothermal energy Tidal energy
جستی لوہے کی چادریں ان پر ______ کی کوٹنگ رکھتے ہیں؟
Lead
Chromium
Tin
Zinc
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Explanation
Galvanized iron sheets have a coating of zinc.
Galvanization is a process where a layer of zinc is applied to iron or steel to protect it from rusting, making "galvanized iron" essentially iron coated with zinc
تمام موسم بنیادی طور پر _____ کی وجہ سے ہوتے ہیں؟
Ocean waves
Heating from the Sun
Moon light
Movement of the Earth
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Explanation
All weather patterns are mainly caused by heating from the Sun .
It drives the movement of air and water in the atmosphere, influencing temperature, precipitation, and wind patterns.
عصبی خلیے کو کیا کہتے ہیں؟
Reflex
Neuron
Dendrite
Nerve
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Explanation
A neuron , also known as a nerve cell.
It is the basic building block of the nervous system.
It receives, processes, and transmits information through electrical and chemical signals .
It allowing for communication between different parts of the body .
زمین کی پرت میں سب سے زیادہ پرچر دھات _____ ہے؟
Aluminum
Iron
Carbon
Silicon
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Explanation
Aluminum is the most abundant metal in the Earth's crust.
It comprising about 8% of its weight.
It is primarily found in the form of bauxite ore.
پانی میں موجود نقصان دہ بیکٹیریا کو تباہ کرنے کے لیے کون سی گیس استعمال ہوتی ہے؟
Chlorine
Oxygen
Iodine
Fluorine
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Explanation
Chlorine is the gas used to disinfect and purify water.
It is passed through water to kill bacteria.
خون کے سرخ خلیات کی عمر کتنے دن ہے؟
120
130
112
110
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Explanation
The lifespan of a red blood cell is around 120 days.
Blood cells are made in the bone marrow.
It produces about 95% of the body's blood cells.
Additional information:
The lifespan of white blood cells ranges from 13 to 20 days ,
انسانوں کے پاس ______ جوڑے کروموسوم ہیں۔
20 pairs
40 pairs
23 pairs
None of these
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Explanation
The human cell contains 46 chromosomes.
These are organized into 23 pairs , where each parent contributes one chromosome to each pair, resulting in a total of 46 chromosomes in most human cells.
This number includes 22 pairs of autosomes and 1 pair of sex chromosomes, determining an individual's sex ( XX for females and XY for males ).
NOTE: DON'T BE CONFUSED about the pair and number of Chromosomes in the Human body
Total Chromosomes: 46
Pairs of Chromosomes: 23
دھاتوں کو کاٹنے اور ویلڈنگ میں استعمال ہونے والی شعلہ ______ ہے؟
Polythene
Oxyacetylene
Ethylene
None of these
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Explanation
Oxyacetylene flame is used in welding and cutting metals due to its high temperature .
It provides a flame temperature of about 3200°C , making it suitable for industrial applications.
مکہ سے مدینہ ہجرت کے دوران محمد صلی اللہ علیہ وسلم نے کس غار میں قیام کیا؟
Ghar-e-Sor
Ghar-e-Hira
Ghar-e-Alperovitz
None of these
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Explanation
During the migration from Makkah to Madina , Prophet Muhammad (PBUH) stayed in Ghar-e-Sor (Cave of Thawr) with Hazrat Abu Bakr (RA).
They hid there for three days to escape the Quraish who were searching for them.
It is located in the lower part of Makkah in the South of the district of Misfalah
Muhammad PBUH stays here to escape from the tribe of Quraish.