Explanation

• Vitamin A is essential for vision, skin health, and immune function.
• Its deficiency can lead to night blindness (poor ight vision) and other health problems.

Additional information:

• Dry skin and eyes
• Impaired immune function
• Poor wound healing
• Increased risk of respiratory and urinary tract infections

Last verified on 17-01-2026

Explanation

• Energy due to motion is called kinetic energy.
• Any moving object possesses this energy.
• It depends on mass and velocity of the body.
• Faster motion means more kinetic energy.

Last verified on 11-04-2026

Explanation

• During the day, plants perform photosynthesis, absorbing carbon dioxide and releasing oxygen.
• At night, in the absence of sunlight, they undergo respiration, where they take in oxygen and release carbon dioxide.

Last verified on 02-04-2026

Explanation

• Jaundice is a condition characterized by yellowing of the skin and eyes.
• It is caused by excess bilirubin due to liver dysfunction or disease.

Last verified on 01-04-2026

Explanation

12 Islamic Months

1. Muḥarram (محرم الحرام)
2. Ṣafar (صفر المظفر)
3. Rabi al-Awwal (ربیع الاول)
4. Rabi al-Thani / Rabi al-Sani (ربیع الثانی)
5. Jumada al-Awwal (جمادی الاول)
6. Jumada al-Thani (جمادی الثانی)
7. Rajab (رجب المرجب)
8. Shaʿban (شعبان المعظم)
9. Ramadan (رمضان المبارک) – Month of fasting
10. Shawwal (شوال المکرم)
11. Dhu al-Qaʿdah (ذوالقعدہ الحرام)
12. Dhu al-Hijjah (ذوالحجہ الحرام) – Month of Hajj

Last verified on 14-03-2026

Explanation

• LED (Light Emitting Diode) is a semiconductor device that emits light when electric current passes through it.
• It is widely used in lighting, displays, electronic indicators, and screens.

Additional information:

• Energy efficiency: Up to 90% more efficient than traditional bulbs
  First discovery: H. J. Round – 1907
  Early research: Oleg Losev – 1927
  Practical LED development: James R. Biard – 1961
  First commercial production: October 1962 (Nick Holonyak)

Last verified on 12-03-2026

Explanation

• Main Cause: Freon / CFCs
• Effect: Breaks down O₃ molecules → more UV-B radiation
• Other Contributors: Halons, carbon tetrachloride
• Result: Skin cancer, cataracts, climate impact

• The Montreal Protocol (1987) aimed to reduce CFC emissions
• Ozone layer protects Earth from harmful ultraviolet rays

Explanation

Baluchistan is the biggest province of Pakistan by area.

It covers 42% of the area of Pakistan

Additional information:

• 37 districts are there in Balochistan.
• It has 8 divisions.
  
• Hingol is the largest river in Balochistan.
• It is located in the southwest of Pakistan.
• They became a province in 1970.
  
• The capital of Baluchistan is Quetta.

Explanation

Radioactivity was discovered by Henri Becquerel in 1896.

They discovered radioactivity proving that the uranium emitted radiation without an external source of energy such as the Sun

Marie Curie with her husband Pierre Curie, coined the term radioactivity.

In 1903, Henry Becquerel shared the Nobel Prize for Physics with Pierre and Marie Curie

Ernest Rutherford did many experiments studying the properties of radioactive decay (alpha, beta, and gamma)

Explanation

Barren means غیر مزروعہ اور بنجر زمین

Fertile means  سیراب / زرخیز

Fruitful means پھل دار