Explanation

• Rutherford’s gold foil experiment (1911) showed that an atom has a small, dense, positively charged center called the nucleus.
• The mass of the atom is concentrated in the nucleus, while most of the atom is empty space.

Additional information:

• Nucleus contains: Protons (+) and neutrons (neutral)
• Electrons move around the nucleus in mostly empty space
• The experiment involved alpha particles being deflected by the nucleus.

Last verified on 10-02-2026

Explanation

• The Partition of Bengal, implemented in 1905 by Lord Curzon.
• It was formally annulled in 1911. 
• He divided Bengal into two provinces on 16-10-1905.

The province was divided into:

• West Bengal, which had a majority of Hindus,
• East Bengal, which had a majority of Muslims

Last verified on 30-03-2026

Explanation

• The first mosque of Islam is Quba Mosque (Masjid al-Quba).
• Location: Medina, Saudi Arabia.
• Built by: The Islamic Prophet Muhammad in the 7th century.
• Established in 622 CE on the outskirts of Medina (Yathrib).
• Prophet Muhammad (PBUH) spent 14 days praying Qasr here.
• Prophet Muhammad (PBUH) led the first Friday prayer in this mosque.

Additional and Most Important information:

• Masjid-ul-Haram (Kaaba): The first mosque on earth.
• Masjid-e-Aqsa: Built much earlier, associated with Hazrat Sulaiman (A.S.).
• Masjid-e-Nabavi: Built after the Prophet arrived in Medina, not the first.

Last updated by NA on 09-0-2026

Explanation

To convert 45 to binary:

45 ÷ 2 = 22 remainder 1

22 ÷ 2 = 11 remainder 0

11 ÷ 2 = 5 remainder 1

5 ÷ 2 = 2 remainder 1

2 ÷ 2 = 1 remainder 0

1 ÷ 2 = 0 remainder 1

Reading remainders from bottom to top: 101101

Therefore, 45 in binary = 101101.

Last verified on 18-07-2026

Explanation

• Jasmine (Chambeli) is the national flower of Pakistan.
• It was chosen as the national flower in 1961.

Additional information:

• National Bird: Chukar
• National Animal: Markhor
• National Dish: Nihari
• National Fruit: Mango
• National Tree: Deodar
• National Flower: Jasmine
• National Vegetable: Lady Finger (Okra)

Last verified on 08-03-2026

Explanation

• Neil Armstrong was the first human to set foot on the Moon on July 20, 1969, during NASA's Apollo 11 mission.
• His famous words upon landing were, "That's one small step for man, one giant leap for mankind."

Additional information:

• Neil Alden Armstrong was died on August 25, 2012.
• He was born on August 5, 1930.

Last verified on 01-04-2026

Explanation

• Holy Prophet Muhammad (PBUH) was born in Makkah (Mecca), Saudi Arabia.
• His birth took place in 571 AD, known as the Year of the Elephant.
• He belonged to the Quraysh tribe, specifically the Banu Hashim clan.
• His father Abdullah died before his birth and his mother was Amina bint Wahb.

Last verified on 13-03-2026

Explanation

• COVID-19 was declared pandemic by WHO on March 11, 2020. 
• WHO stands for: World Health Organization
• COVID caused by: SARS-CoV-2
• COVID-19 acronym: Coronavirus disease 2019
• Global Pandemic means: عالمی وباء

Last verified on 16-03-2026

Explanation

• The Indus River starts in Tibet (China).
• It is originates from the Mansarovar lake.
• It is flows through India, Pakistan.
• It is finally falls into the Arabian Sea near Karachi.
• River Indus starts making a delta near the city of Thatta.

Additional information:

• The old name of the Indus river was: Sindhu
• National River of Pakistan: Indus River
• The Six Barrages constructed in Indus River.
• Indus River Length: 3,180 km
• Indus River 2nd source: Gar Tsangpo
• The upper Indus plain starts from Kalabagh.
• The upper Indus plain ends at Mithankot.

Last verified on 17-03-2026

Explanation

• Sound waves in solvents (like liquids) travel as longitudinal waves, where particles vibrate parallel to the direction of wave propagation.
• These are a type of mechanical wave, requiring a medium to travel.

Last verified on 19-03-2026