Mixed GK

Geet Sethi is a renowned Indian professional billiards and snooker player. He has won multiple World Professional Billiards Championships and is considered one of India's greatest cue sports players. The other options are from different sports: Tyson (boxing), Thorpe (swimming), Sampras (tennis).

Mycology is the scientific study of fungi, including their genetic and biochemical properties, taxonomy, and use to humans. Botany studies plants, zoology studies animals, and zymology studies fermentation processes. Fungi are a separate kingdom from plants and animals.

Blood group O (specifically O negative) is called the universal donor because it lacks A and B antigens on red blood cells, allowing it to be transfused to recipients of any blood group in emergencies. AB positive is the universal recipient, while A and B can only donate to their own types and AB.

Lala Lajpat Rai was famously called 'Lion of Punjab' for his fierce nationalism and leadership in the Indian independence movement. He was part of the Lal-Bal-Pal trio (with Bal Gangadhar Tilak and Bipin Chandra Pal). Bhagat Singh revered him and sought revenge for his death after police brutality.

James Harrison, a Scottish-born Australian journalist, invented the mechanical refrigeration system used in modern refrigerators in 1856. His invention used ether as a refrigerant and laid the foundation for modern refrigeration technology. Torricelli invented the barometer, Benz invented the automobile, and Hunt invented the safety pin.

Gordon Banks was a legendary English goalkeeper, famous for his 'Save of the Century' against Pelé in the 1970 World Cup. He was part of England's 1966 World Cup-winning team and is considered one of the greatest goalkeepers in football history. Holland and Italy also had famous goalkeepers, but Banks played for England.

Lord Indra is the Hindu god of rain, thunder, and lightning in Vedic mythology. He wields the Vajra (thunderbolt) and is the king of Svarga (heaven). Lord Shiva is the destroyer/transformer, Mahavira founded Jainism, and Krishna is an avatar of Vishnu - none are specifically associated with rain and thunder.

An entomologist is a scientist who studies insects, including their behavior, physiology, classification, and ecology. Pathology studies disease, zoology covers animals broadly, and psychology studies the mind. Entomology is a specialized branch of zoology focused exclusively on insects.

Nitrogen is the primary gas used in fertilizer production. It's essential for making ammonia, urea, and ammonium nitrate - the three most widely used nitrogen fertilizers. Plants require nitrogen for protein synthesis and growth, making it crucial for agriculture.

Scurvy is caused by vitamin C (ascorbic acid) deficiency. Vitamin C is essential for collagen synthesis in the body. Without it, blood vessels become fragile, leading to bleeding gums, fatigue, and poor wound healing. Citrus fruits are rich in vitamin C.

A lactometer is specifically designed to measure the specific gravity of milk, which indicates its purity and detects adulteration (like added water). Calorimeters measure heat energy, barometers measure atmospheric pressure, and photometers measure light intensity.

Ocean tides are primarily caused by the gravitational pull of the moon on Earth's oceans. The moon's gravity creates a bulge in ocean water on the side facing it. The sun also contributes but has less effect due to greater distance. Earth's daily motion affects tides but doesn't cause them.

 ‘Pisciculture’ is the science of rearing fish.

A sphygmomanometer is the medical instrument used to measure blood pressure. It consists of an inflatable cuff and a pressure gauge. The name comes from Greek 'sphygmos' (pulse) and 'manometer' (pressure meter). Density is measured by densitometers, humidity by hygrometers.

Insomnia is the medical term for inability to sleep or sleeplessness. Dyspnoea refers to difficult breathing, trachoma is an eye infection, and dysuria means painful urination. The term comes from Latin 'in-' (not) and 'somnus' (sleep).

New Zealand is known as the land of the Kiwi, both for the native kiwi bird and as a national nickname for New Zealanders. The kiwi is a flightless bird unique to New Zealand. Tasmania, Greenland, and Australia have their own distinctive native species but not kiwis.

'As cool as a cucumber' is the correct and traditional simile. Cucumbers have a cooling effect due to their high water content and can feel cool to touch even in warm weather. While snow and ice are also cold, this idiomatic expression specifically uses cucumber.

The Moti Masjid (Pearl Mosque) at the Red Fort in Delhi was constructed by Mughal Emperor Aurangzeb in 1659-1660. Akbar built Fatehpur Sikri and Buland Darwaza, Sher Shah built the Grand Trunk Road, and Iltutmish built the Qutub Minar structures.

Tobacco is a classic cash crop - grown primarily for sale rather than subsistence. Other cash crops include cotton, sugarcane, and tea. Maize, rice, and wheat are primarily food crops (cereals) grown for direct consumption, though they can also be sold commercially.

The Nilgiri Hills are primarily situated in Tamil Nadu, though they extend into Kerala and Karnataka. The name means 'Blue Mountains' in Tamil. Ooty (Udhagamandalam), a famous hill station, is located in the Nilgiris of Tamil Nadu, not in Himachal Pradesh.

Ethylene is a natural plant hormone that triggers and regulates the fruit ripening process. It's produced by fruits themselves and acts as a chemical signal that stimulates ripening, which is why placing unripe fruit near ripe fruit speeds up the process.

The MacMahon Line (also called the McMahon Line) is the boundary between India and China, established during the 1914 Simla Convention. The Radcliffe Line separates India and Pakistan, while the Durand Line marks the border between Afghanistan and Pakistan.

Shahjahanabad was the Mughal capital city established by Emperor Shah Jahan in the 17th century, which is now known as Old Delhi. It was the seventh city of Delhi and contains historic areas like Chandni Chowk and the Red Fort.

Acupuncture is an ancient Chinese healing practice that involves inserting thin needles into specific points on the body to treat various health conditions and balance the flow of energy (Qi). It has been practiced in China for over 2,000 years.