EVERYDAY SCIENCE
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
نیپ ٹائڈز کس وجہ سے پیدا ہوتے ہیں؟
- Earth rotation
- Right angle position of Moon
- Strong winds
- None of these
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Explanation
- Neap tides occur when the Sun and Moon are at right angles to Earth.
- Their gravitational pulls partially cancel each other.
- This results in the lowest difference between high and low tides.
Last verified on 14-05-2026
توانائی کا کون سا شعبہ بنیادی طور پر نقل و حمل کے لیے استعمال کرتا ہے؟
- Transport
- Industrial
- Agriculture
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Transport sector uses fuel like petrol, diesel, and gas.
- It powers vehicles for movement of passengers and goods.
- It is one of the largest energy-consuming sectors.
Last verified on 14-05-2026
قدرتی گیس اپنی خالص حالت میں بے بو ہوتی ہے، اس لیے کیا کیا جاتا ہے؟
- Is not usable
- Needs odorant for detection
- Needs color addition
- None of these
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Explanation
- Natural gas is a widely used energy source.
- In its pure form, it has no smell (odorless).
- This makes it difficult to detect leaks.
- For safety, special substances are added to it.
- These substances help people smell gas leakage easily.
Last verified on 14-05-2026
پودوں اور جانوروں کے فضلے سے براہِ راست حاصل ہونے والا توانائی کا ذریعہ کون سا ہے؟
- Wind
- Hydro
- Biomass
- None of these
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Explanation
- Plant and animal waste can be converted into useful fuel is called biomass.
- It is produced from organic waste.
- It includes crop residue, wood, dung, and animal waste.
Last verified on 14-05-2026
لیزر بیمز مواصلات میں کیوں استعمال کی جاتی ہیں؟
- Are invisible
- Have low intensity
- Travel in straight narrow paths
- None of these
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Explanation
- Laser light is a special type of light used in modern communication systems.
- It is highly focused and very powerful.
- Communication systems need signals that travel long distances with accuracy.
- Laser beams do not spread much like normal light.
- That is why they are ideal for communication.
Last verified on 14-05-2026
ایک عنصر کے آاسوٹوپس میں کس کی ایک ہی تعداد ہے؟
- Neutrons
- Protons
- Electrons
- Beta rays
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Explanation
- Isotopes of an element have the same number of protons.
- They differ in number of neutrons, which changes mass number.
- Chemical properties remain almost the same due to same protons.
Last verified on 14-05-2026
کون سی شعاع مقناطیسی میدان سے سب سے کم متاثر ہوتی ہے؟
- Alpha
- Gamma
- Beta
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Radiation in nuclear physics includes alpha, beta, and gamma rays.
- Charged particles are deflected by magnetic fields.
- Alpha and beta rays carry positive or negative charge.
- Gamma rays are neutral electromagnetic waves.
- Therefore, gamma rays are least affected by magnetic fields.
Last verified on 14-05-2026
ایک ایٹم کا ماس نمبر _____ ظاہر کرتا ہے؟
- Numbers of protons
- Number of electrons
- Number of proton and neutron
- Number of proton and electrons
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Explanation
- Atoms are made of subatomic particles: protons, neutrons, and electrons.
- Mass number represents the total number of heavy particles in nucleus.
- Only protons and neutrons contribute to atomic mass.
Last verified on 14-05-2026
کون سا توانائی کا ذریعہ موسم پر انحصار کی وجہ سے غیر قابلِ اعتماد سمجھا جاتا ہے؟
- Coal
- Wind energy
- Natural gas
- None of these
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Explanation
- Wind energy depends on the speed and consistency of wind.
- If wind is low or stops, electricity generation decreases or stops.
- That’s why it is considered unreliable compared to fossil fuels.
Last verified on 14-05-2026
کوانٹم نظریہ کے مطابق توانائی کے اخراج اور جذب کے بارے میں بنیادی خیال کیا ہے؟
- Energy is exchanged in definite small packets
- Energy has no relation to radiation
- Energy changes only continuously
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Quantum theory states that energy is emitted and absorbed in fixed small packets called quanta.
- These packets are not continuous but exist in discrete amounts.
- This concept was introduced by Max Planck.
Last verified on 13-05-2026
