Tag: science & technology

Chakravarti Rajagopalachari was the first and only Indian Viceroy of India, serving from June 1947 to August 1947. Lord Mountbatten was the last British Viceroy. Lord Irwin and Viscount Wavell were earlier British Viceroys. The position of Viceroy was abolished upon independence.

This statement is correct. Adult humans have 206 bones after many bones fuse together during growth and development. Babies are born with approximately 270-300 bones (sources vary), but many of these fuse through childhood - for example, the skull bones fuse, and vertebrae fuse together. By adulthood, the skeletal system typically consists of 206 bones, though some individuals may have slightly more due to extra small bones like sutural bones in the skull.

This statement is correct. Neurons (brain cells) can indeed survive and function for a person's entire lifetime, making them among the longest-living cells in the human body. Unlike most other cell types that regularly undergo cell division and replacement, most neurons are post-mitotic, meaning they don't divide after formation. While some neurons do die with aging or injury, many cerebral cortex neurons persist from birth until death, potentially living 80-100+ years. This longevity is why brain injuries are so devastating - lost neurons typically aren't replaced.

This statement is technically correct and was proven during the Pacific campaigns of World War II. Coconut water is sterile, isotonic with body fluids, and contains electrolytes similar to blood plasma. In emergency situations where medical supplies were unavailable, doctors successfully used young coconut water intravenously to rehydrate wounded soldiers. However, this is only a short-term emergency substitute - coconut water lacks proper proteins and has other differences from real plasma. It should never be used in modern medical settings except in absolute extreme emergencies without alternatives.

This statement is supported by scientific research. Multiple studies have found that women blink more frequently than men, with women blinking approximately 14-19 times per minute compared to men's 10-15 times per minute. This gender difference appears to be consistent across age groups and cultures. The exact reasons aren't fully understood but may relate to hormonal differences, variations in tear film composition, or other physiological factors. Both men and women blink far more than the basic lubrication requirement, suggesting blinking serves additional functions beyond eye wetting.

Regular tooth brushing actually REDUCES heart disease risk rather than increasing it. Extensive research has established a strong link between gum disease (periodontitis) and cardiovascular disease. Poor oral hygiene allows bacteria to accumulate in the mouth, enter the bloodstream through gums, and contribute to inflammation and arterial plaque formation. Regular brushing and flossing remove plaque bacteria, reducing gum inflammation and systemic bacterial load. Studies consistently show that people with good oral hygiene habits have lower rates of heart attacks, strokes, and other cardiovascular problems.

Most people have 3-6 dreams per night during REM sleep. At approximately 300 nights of dreaming per year, that's roughly 900-1800 dreams annually. The claim of 'over 3000' would require averaging 8+ dreams every single night, which is excessive.

Tongue prints are indeed unique to each individual. The pattern of papillae, fissures, and other features creates a distinctive print that varies from person to person, just like fingerprints. This has potential applications in biometric identification.

The Ebbinghaus forgetting curve shows we rapidly forget newly learned information without reinforcement. The 80% figure is commonly cited for initial memory loss, though actual forgetting rates vary based on factors like material complexity, sleep, review timing, and individual differences.