Explanation

Siha-e-Sitta (Sihah al-Sittah) are the six authentic books of Hadith in Sunni Islam.

1. Sahih al-Bukhari – Compiled by Imam Muhammad al-Bukhari – 7,275 Ahadith.
2. Sahih Muslim – Compiled by Imam Muslim ibn al-Hajjaj – 9,200 Ahadith.
3. Sunan al-Nasa'i – Compiled by Imam al-Nasa'i – 5,270 Ahadith.
4. Sunan Abi Dawud – Compiled by Imam Abu Dawood – 4,800 Ahadith.
5. Jami' al-Tirmidhi – Compiled by Imam al-Tirmidhi – 3,956 Ahadith.
6. Sunan Ibn Majah – Compiled by Ibn Majah – 4,000 Ahadith.

Last verified on 07-07-2026

Explanation

• A body is in equilibrium when the net force acting on it is zero.
• According to Newton's second law, zero net force means zero acceleration.
• A body in equilibrium may be at rest or move with constant velocity.
• Both linear acceleration and angular acceleration must be zero for complete mechanical equilibrium.

Last verified on 26-10-2026

Explanation

• The rate of change in displacement is referred to as velocity.
• The velocity of an object generally changes during its motion.
• The change in position is known as displacement.
• The maximum displacement from the mean position is called amplitude.

Last verified on 26-10-2026

Explanation

• Water has maximum density at 4°C.
• When Water is in its Solid form (Ice) below 0°C.

Last verified on 27-10-2026

Explanation

• Petroleum, Coal, and Natural gas are all fossil fuels. 
• They are non-renewable energy sources 
• Major contributors to global energy production.
• Coal: A solid fossil fuel primarily derived from ancient swamp plants.
• Petroleum (Oil): from the remains of marine microorganisms like plankton.
• Natural gas: Composed of methane, often found in underground deposits alongside petroleum or coal

Last updated on 06-March-2026

Explanation

• RAM and Cache are volatile memories.
• It means their data is lost when power is turned off.
• Volatile memory requires continuous power to retain data.
• RAM is used for running programs and storing temporary data.
• Cache is a high-speed memory that stores frequently used data for the CPU.

Additional information:

• ROM is non-volatile and retains data without power.

Last verified on 16-02-2026

Explanation

• Allama Iqbal delivered his famous Presidential Address on 29 December 1930.
• It was held at the Allahabad session of the All-India Muslim League.
• November 9, 1877 – Born in Sialkot
• 1922 – Actively joined Muslim League politics
• April 21, 1938 – Died in Lahore

Last verified on 30-04-2026

Explanation

• K2 is part of the Karakoram Range.
• It is located on the border between Baltistan, in the Gilgit–Baltistan region of Pakistan.

Additional information:

• K-2 is also known as Godwin Austin.
• 'K' standing for Karakoram.
• Mount K2 is the second-highest mountain on Earth.
• Mount K2 is located on the border of Pakistan and China.
• The height of K2 is 8,611 meters.

Last verified on 12-03-2026

Explanation

• Uranium deposits are found in Dera Ghazi Khan of Punjab.
• The uranium mill was also established in Pakistan in 1977-78.

Additional information:

• Kazakhstan is the biggest producer of Uranium in the world.
  
  
  Last verified on 22-10-2026

Explanation

• The Diamer-Bhasha Dam is constructed on the Indus River.
• It is located between Kohistan (Khyber Pakhtunkhwa) and Diamer (Gilgit-Baltistan).
• The foundation in 1998 by Prime Minister Nawaz Sharif.
• Opened: 2028
• Height: 272 m

Additional information:

Last verified on 20-06-2026