General Knowledge: Explosives, Weapons & Geography

The ostrich is the world's largest living bird, standing up to 2.8 meters tall and weighing up to 156 kilograms. It is flightless but can run at speeds up to 70 km/h. While some birds have longer wingspans (like the wandering albatross), the ostrich is the largest in terms of height and weight.

The Arabian Peninsula is the world's largest at roughly 3.25 million square kilometers, spanning Saudi Arabia, Yemen, Oman, UAE, Qatar, Bahrain, and Kuwait. The Malay Peninsula is significantly smaller at about 190,000 square kilometers. Qatar is a country located on the Arabian Peninsula rather than being a major peninsula itself, and Durham refers to a region in England, not a peninsula.

The British Museum in London is widely considered the largest museum in the world by exhibition space, with over 75,000 square meters (800,000+ square feet) of gallery space. Founded in 1753, it houses approximately 8 million works documenting human culture from its beginnings to the present. The Metropolitan Museum of Art in New York is larger by total building size but has less exhibition space.

RDX is a powerful military explosive developed during World War II. The name comes from 'Research Department Explosive' - it was developed by the US Research Department. Options A and C are common misconceptions; RDX is not related to Research and Development.

PETN is a high-brisance explosive meaning it creates a powerful shattering effect. The full chemical name is Pentaerythritol Tetranitrate. Options C and D have spelling errors ('pentoerythrital', 'tetranitramine'). Option B is incorrect - PETN and TNT are different explosives.

TNT is one of the most well-known explosives, standing for Trinitrotoluene. It's a yellow solid used extensively in military and mining applications. Options A, C, and D have incorrect prefixes ('tetra' means four, not three; 'tera' is not a chemical prefix).

Laughing Gas is the common name for nitrous oxide (N2O), used as an anesthetic and in dental procedures for its euphoric effects. It causes uncontrollable laughter hence the nickname. The other options are nitrogen oxides with different properties and uses.

Sarin is a potent nerve agent that disrupts the nervous system by inhibiting acetylcholinesterase. Mustard Gas is a blister agent (vesicant), Anthrax is a biological agent (bacterium), and Hydrogen Cyanide is a blood agent - none are nerve agents.

Sting grenades (also called stingball grenades) are non-lethal less-than-lethal weapons that discharge rubber balls to cause pain and disorientation without fatal injury. Frag grenades, Claymores, and Rifle Grenades are all lethal fragmentation-based weapons designed to kill.

A Dirty Bomb is a radiological weapon that combines conventional explosives with radioactive material to spread contamination. Smart Bomb and Dumb Bomb refer to guidance systems of conventional explosives. MOAB is a massive conventional bomb (Mother Of All Bombs).

Cluster Bomb, Bunker Buster, and Bouncing Bomb are all real types of aerial bombs. 'Mean Bomb' is not a recognized military term - it's likely a nonsense distractor. Cluster bombs release submunitions, Bunker Busters penetrate hardened structures, and Bouncing Bombs skip across water.

RDX is relatively stable and will burn cleanly if ignited in small quantities without confinement - it requires a detonator to explode. This property makes it safer to handle than primary explosives. Option A is a common misconception; RDX doesn't detonate from simple burning.

Semtex is a plastic explosive containing PETN and RDX mixed with a plasticizer to make it moldable. It was developed in Czechoslovakia and is more powerful than TNT. Options A and B are incorrect combinations; C-4 is a different plastic explosive (RDX-based, not PETN+RDX).

The Ashtavinayak pilgrimage encompasses eight sacred Ganesha temples across Maharashtra. Within Pune district specifically, five temples are situated: Mayureshwar at Morgaon, Siddhivinayak at Siddhatek, Chintamani at Theur, Girijatmaj at Lenyadri, and Vighnahar at Ojhar.