PPSC PAST PAPERS EVERYDAY SCIENCE MCQS 2026
پیپر میں جانے سے
پہلے یہ سوالات و سلیبس ایک بار ضرور پڑھ کر جائیں
PPSC 25
years Past Papers Click here
چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
- Restriction
- Ligase
- Polymerase
- Helicase
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Restriction enzymes (also called restriction endonucleases) recognize specific DNA sequences.
These sequences are usually 4–8 base pairs long.
The enzymes cut DNA at or near these recognition sites.
They are widely used in molecular biology and genetic engineering.
Restriction enzymes allow scientists to manipulate DNA for cloning and analysis.
- Solids
- Liquids
- Both
- Gases
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
S-waves are transverse seismic waves.
They cause particles to move perpendicular to the direction of wave propagation.
S-waves cannot pass through liquids or gases because these cannot support shear stress.
They only travel through solids, like the Earth’s crust and mantle.
This property helps scientists study the internal structure of Earth.
ڈیری صنعت میں پہنچنے کے بعد دودھ کس میں ڈالا جاتا ہے؟
- Tanks
- Bottles
- Jars
- Silco
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
When milk reaches the processing plant, it is poured into silos for storage.
Silos are large containers that keep milk fresh and uncontaminated.
They allow controlled temperature to prevent spoilage.
From silos, milk is later processed for pasteurization, packaging, and distribution.
Using silos ensures efficient storage and handling in the dairy industry.
سیڈیمینٹیشن کس بنیادی عمل کا حصہ ہے؟
- Water
- Air
- Soil
- Rocks
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Sedimentation is the process where solid particles settle at the bottom of a liquid.
It is a primary method in water treatment.
Sedimentation removes suspended solids from water.
It helps in clarifying water before filtration.
This process is essential for providing clean drinking water.
خشک سالی کی وجہ سے جنگلات میں آگ لگنے کا سبب کیا بن سکتی ہے؟
- Reduced rainfall
- Dry vegetation
- High temperatures
- All of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Drought causes reduced rainfall, drying out soil and plants.
Dry vegetation becomes highly flammable, increasing wildfire risk.
High temperatures further intensify fire outbreaks.
These factors together make wildfires more frequent and severe.
Therefore, drought-induced wildfires occur due to all of these factors
خشک سالی کی وجہ سے جنگلات میں آگ لگنے کا سبب کیا بن سکتی ہے؟
- Reduced rainfall
- Dry vegetation
- High temperatures
- All of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Drought causes reduced rainfall, drying out soil and plants.
Dry vegetation becomes highly flammable, increasing wildfire risk.
High temperatures further intensify fire outbreaks.
These factors together make wildfires more frequent and severe.
Therefore, drought-induced wildfires occur due to all of these factors
رائبوسومز کی فیکٹری کیا کہلاتی ہے؟
- Nucleolus
- Nucleus
- Mitochondria
- Endoplasmic Reticulum
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
The nucleolus is known as the factory of ribosomes.
The nucleolus is a dense region inside the nucleus.
It is responsible for producing ribosomal RNA (rRNA).
Ribosomes are assembled in the nucleolus before entering the cytoplasm.
Ribosomes play a key role in protein synthesis.
- Tin
- Aluminum
- Zinc
- Chromium
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Steel cans are coated with tin to prevent rusting and corrosion.
Tin provides a protective layer between steel and the beverage.
This ensures the drink remains safe and hygienic.
- AUG
- UAA
- UAG
- GGG
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
AUG is the start codon in mRNA that signals the beginning of protein synthesis.
It codes for the amino acid Methionine in eukaryotes.
During translation, ribosomes recognize AUG to initiate protein assembly.
Stop codons like UAA, UAG, and UGA signal the end of translation.
کوارٹج کا کیمیائی نام کیا ہے
- Silicon dioxide
- Stannous oxide
- Aluminum oxide
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
The chemical name for quartz is silicon dioxide
Chemical Formula: SiO₂
Composition: Silicon (Si) and Oxygen (O)
Structure: A framework of silicon-oxygen tetrahedra
Common Names: Silica, Rock Crystal (for the clear variety)