General Knowledge: Science, Geography & World Facts

Sheikh Mujibur Rahman, often referred to as Mujibur Rahman or Mujib, was indeed the first Prime Minister of Bangladesh. He led the Awami League and is considered the founding father of the nation. He served as Prime Minister during the transition period in 1971-1972 and later as President until his assassination in 1975.

The Nile is traditionally recognized as the longest river in the world, stretching approximately 6,650 kilometers. While some studies argue the Amazon is longer, the Nile remains the standard answer in most geographical contexts and curricula.

The Trans-Canada Highway is one of the longest national highways, but the Pan-American Highway is generally cited as the longest. However, among the given options, Trans-Canada is the most significant. Note: The stored answer is technically debatable globally but correct within the provided set.

Mount Everest is indeed the highest mountain in the world, with an elevation of 8,848.86 meters above sea level. It is located in the Mahalangur Himal sub-range of the Himalayas on the border between Nepal and China. K2 is the second highest, while Kilimanjaro is the highest in Africa, and the Alps is a mountain range, not a single peak.

Radiocarbon (carbon-14) is produced in the upper atmosphere when cosmic ray neutrons collide with nitrogen-14 nuclei, causing a nuclear reaction that converts nitrogen-14 to carbon-14. This is a well-documented nuclear physics process. The other options incorrectly attribute it to UV light, solar radiation on CO2, or lightning.

Rolling a stone up a slope requires less work than lifting it vertically because the force needed is much smaller when spread over a longer distance (mechanical advantage). When lifting vertically, you must overcome the full weight directly. Rolling spreads the work over more distance with less force. The other options incorrectly claim rolling requires more work or the same work.

Blotting paper absorbs ink through capillary action - the movement of liquid through narrow spaces due to adhesive and cohesive forces. The paper's porous structure contains many tiny channels that draw ink upward against gravity. Viscosity resists flow, diffusion is slow random motion, and siphon action requires gravity-driven flow through a tube.

A siphon works due to gravitational pressure difference, with liquid flowing from the higher vessel to the lower one. If both liquid levels are at the same height, there's no pressure difference to drive the flow. Equal density, unequal limb length, or equal temperature don't prevent siphon action - it's the equal height that eliminates the driving force.

Transformers heat up due to both resistive heating from current flow (I²R losses) and hysteresis losses from repeated magnetization and demagnetization of the core. Eddy currents in the core also contribute. Oil circulation dissipates this heat. Option C correctly identifies both major heating sources, while the sun is irrelevant for internal heating.

Boroline has long been marketed in India with the specific tagline 'Khushbudar Antiseptic Cream' (Fragrant Antiseptic Cream). While Boro Plus and Vicco Turmeric are also antiseptic or skin creams, they do not use this specific iconic slogan.

The slogan 'Jo bhi khaaye dost ban jaaye' (Whoever eats it becomes a friend) is the famous advertising jingle for Hajmola, a digestive tablet. It emphasizes the social and tasty aspect of the product, unlike the branding for Melody, Britannia, or Parle.

This is the iconic advertising jingle for Melody chocolates from the 1990s. 'Melody khao, khud jaan jao' became a cultural catchphrase in India. The jingle's playful word pairing made it memorable and effective.

This is a classic line from a Nirma Super detergent television advertisement in India, featuring the character 'Deepika ji'. The dialogue is iconic to the Nirma brand and is not associated with Tide, Rin, or Sunlight commercials.