Explanation

مصنف: خواجہ الطاف حسین حالی

 وجہِ تصنیف: یہ نظم انہوں نے سرسید احمد خان کی فرمائش پر 1879ء میں لکھی۔

موضوع: اس طویل نظم میں اسلام کی گزری ہوئی عظمت، مسلمانوں کے شاندار ماضی کے کارناموں اور اس وقت کی پستی و زبوں حالی کا ذکر کیا گیا ہے۔

Explanation

• MS Excel: Application software used for spreadsheets, calculations, and data analysis.
• Windows, Linux, DOS: Operating systems (system software).

Explanation

• Year: 622 CE (13th year of Prophethood).
• Migrants: Prophet Muhammad (PBUH) and Hazrat Abu Bakr (RA).
• Route: Makkah to Madinah; arrival in Rabi-ul-Awwal.
• Significance: Beginning of the Islamic calendar (1 AH) and the first Islamic state.

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

• Absence of Light will make Blind.
• Absence of Speech will make Dumb.

Last verified on 25-10-2026

Explanation

• Wreck means بربادی
• Ruin means بربادی

Last verified on 02-04-2026

Explanation

• Paleontology: The scientific study of fossils and ancient life.

Additional information:

• Archaeology: The study of past human societies through material remains.
• Geology: The study of Earth's structure, rocks, and processes.
• Anthropology: The study of humans, their evolution, and cultures.

Last verified on 25-10-2026

Explanation

• James Chadwick discovered the neutron in 1932.
• A neutron is a subatomic particle with no electric charge, found in the nucleus of an atom.
• He received the 1935 Nobel Prize in Physics for this discovery, which greatly improved scientific understanding of atomic structure.
• Neutrons help stabilize atomic nuclei.

Last verified on 25-10-2026

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

Total marks of 10 students = 10 × 80 = 800

Total marks of 15 students = 15 × 85 = 1275

Total marks of 5 new students = 1275 - 800 = 475

Last verified on 23-10-2026