Mixed GK

Rainbows occur when sunlight is refracted, reflected, and dispersed through water droplets in the atmosphere. This phenomenon is most visible when the sun is relatively low in the sky - typically 40 degrees or less above the horizon. When the sun is higher, the rainbow angle becomes too shallow to be visible from the ground, or it may be below the horizon.

Charles Darwin proposed the theory of natural selection in his seminal work, On the Origin of Species.

The Story of My Experiments with Truth is the autobiography of Mahatma Gandhi, covering his life from childhood to 1921.

Pratibha Patil served as the 12th President of India from 2007 to 2012, becoming the first woman to hold the office.

Mahindra and Mahindra acquired the Kinetic Motor Company's two-wheeler business in 2008.

While Saturn is the most famous for its prominent ring system, Jupiter, Uranus, and Neptune also have rings. However, in general knowledge contexts, Saturn is the primary answer.

Copper was the first metal used by humans, marking the beginning of the Copper Age or Chalcolithic period.

A young horse is called a foal. A colt is a young male, and a filly is a young female.

Gulliver's Travels is a famous satirical novel written by the Anglo-Irish writer Jonathan Swift.

Entomology is the scientific study of insects. Palaeontology is the study of fossils, and ornithology is the study of birds.

Stomata are the microscopic pores found in the epidermis of leaves and other green aerial parts of plants. They are primarily responsible for gas exchange and transpiration.

Goitre is an enlargement of the thyroid gland, which is most commonly caused by a deficiency of iodine in the diet. Iodine is a critical component of thyroid hormones.

Ferdinand Marcos was the President of the Philippines from 1965 to 1986. Ghana, Fiji, and Cuba had different leaders during this period.

Periplaneta americana is the scientific name for the common American cockroach. Other options refer to a frog (Rana tigrina), an earthworm (Pheretima posthuma), and a rose (Rosa indica).

The exoskeleton of arthropods is composed primarily of chitin, a long-chain polymer of N-acetylglucosamine, which provides structural support and protection.

The 2012 Summer Olympics were officially held in London, United Kingdom.

Madonna has been famously associated with Kabbalah since the late 1990s. Scientology is followed by Tom Cruise and other celebrities, Christianity and Buddhism are major world religions but not specifically associated with Madonna.

The Irish Wolfhound is widely recognized as the tallest breed of dog.

The 42nd Amendment to the Constitution of India, enacted in 1976, added the words 'Socialist', 'Secular', and 'Integrity' to the Preamble.

The United Nations headquarters is located in New York City, USA.

Each hemoglobin molecule contains four heme groups, allowing it to bind up to four molecules of oxygen (O2).