Explanation

• Invented by: Dennis Ritchie.
• First appeared: 1972.
• Developed at: Bell Laboratories, USA.
• Company: AT&T.
• Type: General-purpose programming language.
• Co-developer of: UNIX.
• Known as: Father of C Language.

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

Explanation

CAD, or CADD, is short for computer-aided design or computer-aided design and drafting.

CAD is a software used in the computer systems by: 

• Engineers
• Architects
• Drafters
• Artists

Last updated by NA on 04-11-2026

Explanation

• Total members: 32 (30 European & 2 North American countries)
• NATO stands for the North Atlantic Treaty Organization
• Founded: 4 April 1949 (Washington, USA)
• Headquarters: Brussels, Belgium
• Latest Member: Finland
• Type: Military Alliance
• Official Languages: English & French
• Founding members: 12
• Pakistan: Not a NATO member
  
• Member Muslim country: Turkiye 
• Last Member: On 7 March 2024, Sweden became the 32nd member.

List of NATO member countries

1.       Albania

2.       Belgium

3.       Bulgaria

4.       Canada

5.       Croatia

6.       Czechia

7.       Denmark

8.       Estonia

9.       France

10.   Germany

11.   Greece

12.   Hungary

13.   Iceland

14.   Italy

15.   Latvia

16.   Lithuania

17.   Luxembourg

18.   Montenegro

19.   Netherlands

20.   North Macedonia

21.   Norway

22.   Poland

23.   Portugal

24.   Romania

25.   Slovakia

26.   Slovenia

27.   Spain

28.   Turkiye

29.   United Kingdom

30.   United States

31.   Finland 2023

32.  Sweden 2024

Last updated by NA on 04-11-2026

Explanation

• Operating System: The main software that manages hardware and runs applications.
• It loads during the boot process.
• Without an OS, a computer cannot provide a usable working environment.

Last updated by NA on 04-11-2026

Explanation

• Takbirs: 6 additional Takbirs (Hanafi method).
• Doing ghusl on Eid is mustahabb.
• Meaning: Eid means festival or feast.
• Eid prayers: Two per year — Eid-ul-Fitr and Eid-ul-Adha.
• First Eid prayer: 2 AH (624 CE).

Last updated by NA on 04-11-2026

Explanation

• Hazrat Isa (AS) was born in Bethlehem (بیت لحم), Palestine.
• The holy book Injeel was revealed to Hazrat Isa (AS
• Hazrat Isa (AS) is known as Rohullah
• Mother: Hazrat Maryam (AS).
• Father: No human father; Hazrat Isa (AS) was born miraculously without a father.

Last updated by NA on 04-11-2026

Explanation

When fasting was made obligatory:

• Timing: Second year of Hijrah (2 AH / 624 CE), in the month of Sha'ban
• First fast: Ramadan 2 AH
• Key verse: Surah Al-Baqarah (183–185)
• Prophet's practice: Fasted Ramadan for 9 years (until 11 AH)
• Before Ramadan: Muslims fasted on Ashura (10th Muharram) and three days each month

Last updated by NA on 04-11-2026

Explanation

• John Napier was the discoverer of logarithms.
• He also invented the so-called "Napier's bones"
• He invented the logarithm in 1614.
• His purpose was to assist in the multiplication of quantities that were then called sines.

Last verified on 02-11-2026

Explanation

• The Line of Control (LoC) was established in 1949 after the Karachi Agreement.
• It was following the first Indo-Pak war over Kashmir.
• It was originally called the Ceasefire Line and renamed the LoC in the 1972 Simla Agreement.
• The LoC is approximately 740 km long.

Last verified on 03-09-2026