Explanation

• Continetal Drift theory was proposed by Alfred wegner in 1912.
• It stated that continents have changed their position and initially there was only one big continent named Pangea.
• Although he was unable to explain the force behind the drifting of continents.

Last verified on 12-11-2026

Explanation

• Blue light has the shortest wavelength.
• In the visible spectrum, wavelength decreases from red to violet.

Additional information:

• Red light rays have the lowest frequency and highest wavelength value.

Last verified on 10-06-2026

Explanation

• Pakistan attended its first summit conference of the Non-Aligned Movement (NAM) as a full-fledged member in Havana on September 3, 1979.

Additional information:

• Founded: 1961
• Founding Conference: Belgrade, Serbia
• Members: 120 developing countries
• Headquarters: Jakarta, Indonesia
• Founding Leaders: Jawaharlal Nehru, Sukarno, Josip Broz Tito, Kwame Nkrumah, Gamal Abdel Nasser

Last verified on 23-06-2026

Explanation

• The 8th Amendment to the Constitution of Pakistan was passed in 1985 during the rule of General Muhammad Zia-ul-Haq.
• It inserted Article 58(2)(b), which empowered the President to dissolve the National Assembly under certain circumstances.
• This power enabled the President to dismiss elected governments and dissolve the National Assembly.
• Article 58(2)(b) was later removed by the 13th Amendment in 1997.
• It was restored by the 17th Amendment in 2003 and later abolished again by the 18th Amendment in 2010.

Last verified on 05-10-2026

Explanation

• O₃ is the chemical formula of ozone gas.
• Ozone is an allotrope of oxygen containing three oxygen atoms.
• It is mainly found in the stratosphere, where it forms the ozone layer.
• The ozone layer protects Earth from harmful ultraviolet (UV) radiation.

Last verified on 30-06-2026

Explanation

• Sea water contains a high amount of dissolved salts.
• Because of salinity, its freezing point is lower than fresh water.
• Fresh water freezes at 0°C, but saltwater freezes at a lower temperature.

Last verified on 01-06-2026

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

• Double landlocked means a land-locked country that is also surrounded by landlocked neighboring countries.
• Uzbekistan is bordered by Afghanistan, Kazakhstan, Kyrgyzstan, Tajikistan, and Turkmenistan.
• Liechtenstein bordered by Austria and Switzerland.

Last verified on 09-03-2026

Explanation

• Captain Muhammad Sarwar Shaheed was the first soldier to be awarded the Nishan-e-Haider
• Born: 10 November 1910, Singhori village, Rawalpindi District
• Died: 27 July 1948 (aged 37), Uri, Jammu and Kashmir, India.
• Buried: Hill of Tilpatra near Uri, Jammu and Kashmir in India
• Service years: 1929–1948
• Allegiance
• British India (1929–1947)
• Pakistan (1947–1948)

Nishan-e-Haider has been awarded to 11 soldiers since Pakistan's independence in 1947.

1. Captain Muhammad Sarwar (1948, Kashmir)
2. Naik Saif Ali Janjua (1948, Kashmir)
3. Major Tufail Muhammad (1958, East Pakistan)
4. Major Raja Aziz Bhatti (1965, Indo-Pak War)
5. Pilot Officer Rashid Minhas (1971, Indo-Pak War)
6. Major Muhammad Akram (1971, Indo-Pak War)
7. Major Shabbir Sharif (1971, Indo-Pak War)
8. Sowar Muhammad Hussain (1971, Indo-Pak War)
9. Lance Naik Muhammad Mahfuz (1971, Indo-Pak War)
10. Captain Karnal Sher Khan (1999, Kargil War)
11. Havildar Lalak Jan (1999, Kargil War)

Explanation

The outermost layer of the Sun is called the corona.

It is the Sun's outer atmosphere, extending millions of kilometers into space and visible during a total solar eclipse.

The innermost layer is the core, where nuclear fusion occurs.