پانی ______ پر ابلتا نہیں ہے؟
A. 272°K
B. None of these
C. 80°R
D. 212°F
Explanation
Water boils at 100°C (Celsius), 212°F (Fahrenheit), and 80°R (Réaumur) under standard atmospheric pressure. 272 K (Kelvin) is below the boiling point of water, as water boils at 373.15 K. Show/Hide Explanation
A. 3 fields
B. 1 field
C. 4 fields
D. 2 fields
Explanation
A moving charged particle is surrounded by both an electric field and a magnetic field.
The electric field is due to the charge itself, and the magnetic field is generated due to the particle's motion.
Show/Hide Explanation
A. Dispersion forces
B. Hydrogen bonding
C. Greater molar mass
D. Dipole-dipole forces
Explanation
Ammonia (NH₃) has a higher boiling point than phosphine (PH₃)
Ammonia exhibits hydrogen bonding, a stronger intermolecular force than the dipole-dipole forces in phosphine.
Show/Hide Explanation
فتوسنتھیس میں آکسیجن کا ذریعہ کیا ہے؟
A. None of these
B. Salt
C. Mineral
D. Water
Explanation
During photosynthesis, plants use water (H2O) along with carbon dioxide (CO2) to produce glucose and oxygen.
The oxygen released comes specifically from the water molecule.
Being split apart to provide the oxygen atoms needed for the glucose molecule.
Show/Hide Explanation
پھیپھڑوں کا ایک حصہ ____ ہے؟
A. Excretory system
B. None of these
C. Digestive system
D. Respiratory system
Explanation
Lungs are vital organs in the respiratory system that help in gas exchange—taking in oxygen and releasing carbon dioxide .
They work closely with the circulatory system to supply oxygenated blood to the body.
Show/Hide Explanation
ورزش یا کام کے اچھے معاہدے کے بعد آرام کیوں ضروری ہے؟
A. To give rest to the brain
B. To neutralize poisons that are produced during exercise or work
C. None of these
D. To rest the tired limbs
Explanation
During intense exercise, lactic acid and other metabolic by-products accumulate in the body.
Rest helps the body recover and neutralize these substances , restoring normal function and reducing fatigue.
Show/Hide Explanation
خون کا کون سا اجزاء جسم کے تمام حصوں میں کھانے کا سامان لے جاتا ہے؟
A. White corpuscles
B. None of these
C. Plasma
D. Haemoglobin
Explanation
Plasma is the liquid part of blood that transports nutrients, hormones, and waste materials.
It carries digested food materials to all parts of the body for use or storage.
Show/Hide Explanation
مندرجہ ذیل میں سے کون سا ایک قابل اعضاء نہیں ہے؟
A. Lungs
B. None of these
C. Adrenal gland
D. Kidney
Explanation
Kidney – Excretory organ (removes nitrogenous wastes like urea).
Lungs – Excretory organ (remove CO₂ and water vapor).
Liver – Excretory organ (breaks down toxins, excretes bile pigments).
Adrenal gland – Not an excretory organ, it produces hormones like adrenaline and cortisol.
Show/Hide Explanation
A. None of these
B. Secretions of liver
C. The bone marrow
D. Secretions of ductless gland
Explanation
Hormones are chemical messengers produced and secreted by ductless (endocrine) glands. They regulate various bodily functions, including growth, metabolism, and mood. Show/Hide Explanation
جسم کے درجہ حرارت میں اضافے کی وجہ سے بخار کے دوران ذائقہ کی کلیوں کا کیا ہوتا ہے؟
A. Taste buds become completely inactive
B. Taste buds can't perform properly
C. Taste buds function normally without any impact
D. aste buds perform better and become more sensitive
Explanation
During a fever, the increased body temperature can interfere with the normal functioning of the taste buds, leading to a reduced sense of taste or altered taste perception.
This is because taste buds function optimally at a normal body temperature, and fever can disrupt this balance.
Show/Hide Explanation
✅ Correct: 0 |
❌ Wrong: 0 |
📊 Total Attempted: 0
iamge
