Explanation

• The chemical name of chalk is Calcium carbonate.
• Its chemical formula is CaCO₃.
• It is a soft, white mineral.
• Commonly used in blackboard chalk and limestone.
• Found naturally in rocks and marine shells.

Last verified on 30-04-2026

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

• The Silk Letter Movement was started by Mahmud Hasan Deobandi and Ubaidullah Sindhi.
• It began around 1913 as a secret movement against British rule.
• Messages were written on silk cloth to avoid detection.
• The aim was to gain foreign support (Afghanistan, Turkey).
• It continued until 1920 but was later exposed by the British.

Last verified on 30-04-2026

Explanation

Indus Valley Civilisation (IVC)

• Also known as the Indus Civilisation.
• A Bronze Age civilisation in the northwestern regions of South Asia.
• Existed from 3300 BCE to 1300 BCE.
• Reached its mature phase between 2600 BCE and 1900 BCE.

Last verified on 30-04-2026

Explanation

• The sentence uses a comparison structure.

• “More important than” is followed by a to-infinitive phrase.
• So, “To finish quickly” is grammatically correct.
• It keeps both sides of the sentence in same form.

Last verified on 29-04-2026

Explanation

The Qur'an contains 6 Surahs named after Prophets.

1. Surah Ibrahim
2. Surah Yusuf
3. Surah Muhammad
4. Surah Nuh
5. Surah Hud
6. Surah Yunus

Total Prophets mentioned in Qur’an → 25 Prophets.

Last verified on 28-04-2026

Explanation

• The first writer of Wahi (Revelation) in Makkah was Khalid ibn Sa'id (R.A).
• He belonged to the Quraysh tribe.
• In Madinah, main scribe → Zayd ibn Sabit (R.A)
• Compilation of Qur’an → Abu Bakr (R.A) era

Last verified on 28-04-2026

Explanation

• The idiom “A Dark Horse” means a person who wins unexpectedly.
• It refers to someone whose abilities are not well known.
• Such a person surprises everyone by sudden success.
• Commonly used in competitions, elections, or exams.

Last verified on 28-04-2026

Explanation

• The Nile is the longest river in the world
• Length of about 6,650 km

 Additional information

Last updated by NA on 27 April 2026

Explanation

• The G20 Summit 2025 was hosted by South Africa.
• It is organized under G20, a major global economic forum.
• The summit was scheduled for 22–23 November 2025.
• Theme: Solidarity, Equality, and Sustainability.
• It focuses on global economic cooperation.

Additional information:

• Founded: 1999
• Members: 19 countries + European Union
• 2023 host: India
• 2024 host: Brazil

Last verified on 27-04-2026