Explanation Marconi  invented  Radio . Radio was invented in  1895 . Guglielmo Marconi was an  Italian  inventor.  *****

Explanation The Mole (mol) is the SI unit of amount of substance, representing 6.022 x 10^23 particles. It is used to measure the amount of a substance in a sample.

Explanation Louis Pasteur (1822–1895) was a pioneering microbiologist and chemist whose work bridged both fields: As a Chemist : Discovered molecular chirality (optical isomers). Studied fermentation, proving it was caused by microorganisms. As a Microbiologist : Developed pasteurization (heat treatment to kill microbes in food). Created vaccines for rabies and anthrax. Disproved spontaneous generation (germ theory of disease).

Explanation The chemical formula CH₃COOH represents acetic acid , a weak organic acid commonly found in vinegar. Key Information : Common Name : Acetic acid (systematic name: ethanoic acid). Properties : Weak acid (partially dissociates in water). Pungent smell, sour taste (vinegar contains ~4–8% acetic acid).

Explanation Xylem and Phloem are specialized conducting tissues in vascular plants: Xylem : Transports water and minerals from roots to other parts (unidirectional). Phloem : Transports sugars (photosynthates) from leaves to other parts (bidirectional).

Explanation The atomic weight of Mercury (Hg) is 200.59 unified atomic mass units (u), as listed on the periodic table. Key Information : Symbol : Hg (from Latin Hydrargyrum) Atomic Number : 80 Standard Atomic Weight : 200.592 u (often rounded to 200.59 u).

Explanation The word " namaz " is of Persian origin. The Arabic word for prayer is " Salah ".

Explanation Ashra Mubashra  are those Companions of Prophet Hazrat Muhammad (P.B.U.H), who were given  Good News in their life that they will be awarded Heaven . Following is the List with Names of Ashra Mubashra: 1. Hazrat Abu Bakar (R.A) 2. Hazrat Umer Farooq (R.A) 3. Hazrat Usman (R.A) 4. Hazrat Ali (R.A) 5. Hazrat Zubair ibn-e-Awam (R.A) 6. Hazrat Talha (R.A) 7. Hazrat Abdul Rehman bin-e-Auf (R.A) 8. Hazrat Abu Obaida bin-al-Jarah (R.A) 9.  Hazrat Saad bin-e-Abi Waqas (R.A) 10. Hazrat Saeed bin-e-Zaid (R.A)

Explanation Karakar pass  is located in:  Hindu  Kush , KPK Important Passes of Pakistan : 1.  Khyber Pass   connects: Peshawar to Kabul connects: Pakistan to Afghanistan Height 1070 meters, 3510 feet  2.  Bolan Pass  Connects: JCB and Sibi with Quetta  Height: 1793 meters, 5884 feet  3.  Lowari Pass   Connects: Chitral with Dir  Height: 3118 meters, 10230 feet  4.  Broghil Pass   Location: Pakistan & Afghanistan border  Height: 3798 meters, 12460 feet  5.  Malakand Pass  Connects: Dir with Chitral  Height: 1362 meters, 4468 feet  6.  Shandur pass Connects: Gupis/Gilgit with Chitral  Height: 3700 meters, 12139 feet  7.  Khanjerab Pass  (top most in Pakistan)  Other name: Friendship Gate Connects: China with Pakistan  Height: 4693 meters, 15397 feet  8.  Dorah pass Connects: Badakhshan province of Afghanistan with Chitral  Height: 4300 meters, 14108 feet  9.  Babusar Pass  Connects: Mansehra/Abbotabad with Gilgit 10.  Kohat Pass Connects: Kohat with Peshawar  11.  Khojak Pass Connects: Qilla Abdullah with Chaman 12.  Tochi Pass Connects: Ghazni with Bannu 13.  Karakar Pass Connects: Mingora with Buner

Explanation Pakistan  is the  most successful  national field hockey team in the  Hockey World Cup . Pakistanis the   four-time  champion:  1971 1978 1982 1994