Explanation

• Battery is a device that converts chemical energy into electrical energy.
• Batteries work by using a galvanic cell.
• It is an electrochemical device made up of two electrodes and an electrolyte solution.

Last verified on 16-03-2026

Explanation

Explanation

• Ohm's law, description of the relationship between current, voltage, and resistance.
• Georg Simon Ohm stated that the electric current through a conductor is directly proportional to the voltage across it, provided temperature remains constant. 
• This relationship is called Ohm’s Law.

Last verified on 22-05-2026

Explanation

• Frequency is the number of occurrences of a repeating event per unit of time.
• The SI unit of frequency is the hertz (Hz).
• 1 Hz = 1 cycle or vibration per second
• Unit: Hz = s⁻¹ (per second)
• Named after physicist Heinrich Hertz
• Used for waves, oscillations, sound, and electromagnetic radiation
• Derivations from other quantities: f = 1 / T
• Dimension T^−1

Explanation

• Surah Yaseen is known as the "Heart of the Holy Quran."
• It is the 36th chapter of the Quran.
• It contains 83 verses.
• It is regarded as an earlier Meccan surah.

Additional information:

• Surah Ar-Rahman: "Aroos ul Quran" (the Bride of the Quran).
• Al-Fatihah (The Opening)
• Al-Baqarah (The Cow)
• Aali Imran (The Family of Imran)
• An-Nisa (The Women)
• Al-Maidah (The Table)

Last verified on 15-07-2026

Explanation

• Rukus in the Holy Quran: 558 / 540
• Verses (Ayat): 6,236 / 6,666
• Total Surahs: 114
• Makki Surahs: 86 (revealed in 13 years, mostly short Ayat)
• Madani Surahs: 28 (revealed in 10 years, mostly long Ayat)
• Total Juz': 30
• Sajda Tilawat: 14

Last verified on 19-07-2026

Explanation

The first constitution of Pakistan was enforced on March 23, 1956

Additional information

List of the Constitution of Pakistan 1947 to date

First:   1956 Constitution

• Adoption Date: 23rd March 1956

• Prime Minister: Chaudhry Muhammad Ali

• President: Iskander Mirza

Second: 1962 Constitution

• Adoption Date: 8th June 1962

• Prime Minister: Muhammad Ayub Khan (also President at the time)

Third: 1973 Constitution

• Adoption Date: 12th April 1973

• Prime Minister: Zulfikar Ali Bhutto

• President: Fazal Ilahi Chaudhry

  
  

  Last updated by NA on 25-April-2026

Explanation

• Iskander Mirza became the first President of Pakistan on 23 March 1956.
• He was the last Governor-General of Pakistan before becoming President.
• He was associated with the Republican Party.
• He abrogated the 1956 Constitution and imposed martial law (1958).
• He also served earlier as Governor of Bengal (India) and Governor-General of Pakistan.
• Born: 13 November 1899, Murshidabad, India
• Died: 13 November 1969, London, UK (buried in Iran)
• He was the great-grandson of Mir Jafar.

Additional information:

• First President of Constituent Assembly of Pakistan: Quaid-e-Azam Muhammad Ali Jinnah
• First elected President of Pakistan: Field Marshal Ayub Khan

Explanation

• Pakistan's last census, the 7th Population & Housing Census, was indeed held in 2023  
• From March to May 2023
• Recorded Pakistan's population at 241.5 million (approx.)
• Pakistan's Constitution requires a census every 10 years.

There are a total of seven censuses held in Pakistan

1951 (First census)

1961 (Second census)

1972 (Third census)

1981 (Fourth census)

1998 (Fifth census)

2017 (Sixth census)

2023 (Seventh, first digital census) 

Next 2033

 Last updated by NA on 05-11-2026

Explanation

• Wilhelm Conrad Rontgen discovered X-rays
• He was discovered on 8 November 1895.
• He got the Nobel Prize in Physics in 1901.

Additional questions

• The penetrating power of X-rays depends on their frequency

Last updated by NA on 05-11-2026