Explanation

• Mars is known as the Red Planet due to its reddish appearance.
• Its surface contains iron oxide (rust) which gives it a red color.
• It is the 4th planet from the Sun in the solar system.
• Mars has two small moons: Phobos and Deimos.
• Mars is often called the “planet of future exploration”.

Last verified on 11-11-2026

Explanation

• An electric generator is a device that converts mechanical energy into usable electrical energy.
• This process is based on the principle of electromagnetic induction.
• Discovered in 1831 by British scientist Michael Faraday.

Last verified on 27-04-2026

Explanation

• The correct preposition with “proficient” is in.
• “Proficient in” means skilled or expert in a subject.
• It is commonly used with subjects like mathematics, English, science.

Last verified on 27-04-2026

Explanation

• The famous book "Al-Qanun" (The Canon of Medicine) was written by Abu Ali Sina.
• It is also known as Avicenna. 
• The book covers medicine, diseases, and treatments.

Last verified on 27-04-2026

Explanation

• Ibn al-Haytham is known as the Father of Modern Optics.
• He made groundbreaking discoveries about light and vision.
• His famous book is Kitab al-Manazir (Book of Optics).
• His research was done around 1011–1021 AD.

Last verified on 27-04-2026

Explanation

• The sacred book of Zoroastrianism is the Zend Avesta (Avesta).
• It contains teachings of the prophet Zoroaster (Zarathustra).
• It focuses on the concept of good vs evil (Ahura Mazda vs Angra Mainyu).
• It is one of the oldest religious texts in the world.
• It was originally written in the Avestan language.

Last verified on 27-04-2026

Explanation

• Caliphate: During the reign of Hazrat Umar (RA).
• Battle of Yarmouk: Fought between the Byzantine Empire and Muslim forces under Khalid bin Waleed.
• Dates: August 15 to August 20, 636 AD.
• Location: Near the Yarmouk River.
• Result: Decisive victory for the Muslims, marking the end of Byzantine rule in Syria.

Last verified on 27-04-2026

Explanation

• Cogent means clear, logical, and convincing.
• Compelling means so convincing that it strongly persuades someone.
• Cogent means واضح، منطقی، اور قائل
• Convincing means واضح، منطقی، اور قائل
• Compelling means اتنا یقین ہے کہ یہ کسی کو مضبوطی سے قائل کرتا ہے۔

The Antonym of Cogent is Unconvincing.

Unconvincing means غیر متزلزل

Last verified on 27-04-2026

Explanation

• Vitamin K helps to make various proteins that are needed for blood clotting and the building of bones.
• Prothrombin is a vitamin K-dependent protein directly involved with blood clotting.

• Vitamin C may protect the body against the effects of pollution.
• It may also prevent blood clots and reduce bruising.

Last verified on 31-03-2026

Explanation

• Ephemeral means عارضی
• Eternal means ابدی
• Long-lasting means دیرپا
• Permanent means مستقل

Last updated question NS on 10-09-2026