Mixed Trivia Quiz: Brands, Animals, Chemistry & Music

Gypsum is calcium sulfate dihydrate (CaSO4·2H2O), a soft sulfate mineral used extensively in construction materials like drywall and plaster. When heated, it loses water to become plaster of Paris. It's distinct from calcium carbonate (limestone) which doesn't contain sulfate.

Quicklime is calcium oxide (CaO), produced by heating limestone (calcium carbonate) to high temperatures in a process called calcination. When water is added to quicklime, it undergoes an exothermic reaction to form slaked lime (calcium hydroxide). It's important not to confuse quicklime with limestone (calcium carbonate) or slaked lime (calcium hydroxide).

This Tamil song appears to be sung by Unni Krishnan, a playback singer in South Indian cinema. The line 'ethukku veena sogam kathaya mudida' is from a Tamil film song for which he provided vocals. Unni Krishnan is known for his melodious voice in Tamil and Malayalam films.

Bleaching powder is calcium hypochlorite (Ca(OCl)Cl), commonly used for bleaching and disinfection purposes. It's made by chlorinating slaked lime and releases chlorine when dissolved in water, which is its bleaching and disinfecting action. It's widely used for water treatment and household bleaching applications.

'Hypo' is the common name for sodium thiosulfate (Na2S2O3), used in photography as a fixing agent. During photographic development, it dissolves unexposed silver halide crystals from the film or paper, making the image permanent. The term comes from 'hyposulfite,' its outdated historical name.

This Tamil song appears to be sung by K. S. Chithra, a legendary playback singer in South Indian cinema. The line 'un nyabagam neengaamal en nenjilae theeyaaga kothithida' is from a Tamil film song she recorded. Chithra has recorded thousands of songs across Tamil, Telugu, Malayalam, Kannada, and Hindi languages and is known for her versatile voice.

The Egyptian plover, also called the Nile crocodile bird, is known for its symbiotic relationship with crocodiles. It enters the crocodile's mouth to feed on parasites and food particles, providing cleaning service while getting food. However, some naturalists debate the frequency of this behavior.

Chameleons have uniquely adapted eyes that can move independently, allowing them to look in two different directions simultaneously. Each eye can swivel separately, providing nearly 360-degree vision and enabling them to watch for prey and predators at the same time. Lizards, snakes, and tortoises cannot do this.

The ostrich has the largest eyes of any land animal, with each eye being larger than its brain. Ostrich eyes measure about 2 inches in diameter, adapted for detecting predators in their open habitat. Eagles and owls have excellent vision but proportionally smaller eyes relative to brain size.

Camels and cats both move both right legs together, then both left legs together, called a pacing gait. This is different from dogs, elephants, and giraffes which use a diagonal gait (moving front-right with back-left). The pacing gait creates a distinctive rocking side-to-side motion visible in both animals.

The Battle of Plassey, a decisive British East India Company victory under Robert Clive, began at 7:00 a.m. on June 23, 1757. This battle in Bengal established British political control over India and is a landmark event in colonial history. The battle lasted several hours and resulted from disputes between the Nawab of Bengal and the Company.

African elephants have the longest gestation period of any land animal, approximately 22 months (about 660 days). This extended pregnancy allows for proper development of the fetus, particularly the brain, which is essential for the complex behaviors elephants exhibit. One year is too short, while 6 and 9 months are typical for many smaller mammals.

Surf is a laundry detergent brand owned by Unilever, introduced in the 1950s. Procter & Gamble is a competing consumer goods company whose detergent brands include Tide. Pringles is a snack brand (also P&G), not a detergent. Surf was one of Unilever's first major detergent brands globally.

Karsanbhai Patel founded Nirma in 1969 as a small-scale operation, which grew to become one of India's largest detergent and consumer goods companies. Neither Ambani nor Birla are associated with Nirma's founding.

Tide is a laundry detergent brand owned by Procter & Gamble (P&G), introduced in 1946. Unilever produces competing brands like Surf and Rin, while Henkel makes Persil.

Persil is a laundry detergent brand owned by Henkel, a German multinational company. Unilever's main detergent brands include Surf, Rin, and Omo, not Persil.

Ariel is a laundry detergent brand owned by Procter & Gamble (P&G), competing with brands like Tide (also P&G) and Unilever's Surf. Henkel's main detergent brand is Persil.