General Knowledge For Class 5 Trivia

Water boils at 100°C under normal atmospheric pressure. This is the temperature at which the vapor pressure of water equals the atmospheric pressure, causing the liquid to change into a gas. At higher altitudes, where atmospheric pressure is lower, the boiling point of water decreases. Conversely, at higher pressures, such as in a pressure cooker, the boiling point of water increases.

Water, commonly known as H2O, is a simple yet vital compound consisting of two hydrogen atoms bonded to a single oxygen atom. This molecular structure forms through covalent bonds, where each hydrogen atom shares an electron with the oxygen atom, creating a stable triatomic molecule. The arrangement of these atoms gives water its unique properties which are essential to all forms of life on Earth.

Mercury is the nearest planet to the sun because it orbits closest to the sun compared to other planets in our solar system. Its proximity to the sun allows it to have the shortest orbital period, completing one orbit around the sun in just 88 Earth days. This close proximity also means that Mercury experiences extreme temperatures, with surface temperatures reaching up to 800 degrees Fahrenheit (430 degrees Celsius) during the day and dropping to -290 degrees Fahrenheit (-180 degrees Celsius) at night.

Mount Everest is the highest mountain peak in the world. It is located in the Himalayas and stands at an elevation of 8,848.86 meters (29,031.7 feet) above sea level. Mount Everest is renowned for its challenging climbing routes and extreme weather conditions. It attracts mountaineers from all over the world, making it a popular destination for adventurers and climbers.

The Pacific Ocean is the correct answer because it is the deepest ocean in the world. It has an average depth of 12,080 feet (3,682 meters) and reaches its maximum depth at the Mariana Trench, which is approximately 36,070 feet (10,972 meters) deep. The other oceans mentioned in the options have lesser average depths compared to the Pacific Ocean.

Lemon contains citric acid. Citric acid is a weak organic acid that is found in citrus fruits like lemons, oranges, and grapefruits. It gives these fruits their sour taste and is commonly used as a flavoring agent in food and drinks. Citric acid also has various other uses, such as a cleaning agent and a preservative.

Entomology is the branch of zoology that specifically focuses on the study of insects. It involves the scientific study of their behavior, classification, physiology, anatomy, and ecology. This field plays a crucial role in understanding the diverse and complex world of insects, which are the most abundant group of organisms on the planet. By studying entomology, scientists can gain insights into insect evolution, their impact on ecosystems, and their interactions with humans, including their role as pests, disease vectors, and beneficial organisms in agriculture and conservation efforts.

Nitrous oxide is commonly known as laughing gas and is used as an anesthetic. It is a colorless gas with a sweet smell and taste. Nitric oxide, on the other hand, is a different compound that is used as a vasodilator and has various other physiological functions. Halothane is a volatile inhalation anesthetic. Therefore, the correct answer is Nitrous Oxide as it is the only option that fits the description of being an anesthetic and also being commonly known as laughing gas.

The Tibetan Plateau is the correct answer because it is the largest plateau on Earth. Located in Central Asia, it has an average elevation of over 4,500 meters and covers an area of about 2.5 million square kilometers. The plateau is often referred to as the "Roof of the World" and is known for its extreme climate and unique biodiversity. It is an important geographical feature and plays a significant role in the region's weather patterns and water resources.

Helium is the gas that is commonly used to fill balloons. This is because helium is lighter than air, which allows the balloon to float. It is also non-flammable and non-toxic, making it safe for use in balloons. Oxygen is not used to fill balloons as it is not lighter than air and can be flammable. Chlorine is a toxic gas and hydrogen is highly flammable, so they are not suitable for filling balloons.

It takes approximately 8 minutes for sunlight to reach Earth. This is because light travels at a speed of about 186,282 miles per second (299,792 kilometers per second), and the average distance between the Earth and the Sun is about 93 million miles (150 million kilometers). By dividing the distance by the speed of light, we can calculate that it takes around 8 minutes for sunlight to travel from the Sun to Earth.

Asia is the largest continent based on both land area and population. It covers about 30% of the Earth's total land area and is home to over 4.5 billion people, which is more than half of the world's population. It is geographically diverse, with various landscapes, including the Himalayas, the Gobi Desert, and the fertile plains of the Indus and Ganges rivers. Asia is also known for its rich cultural heritage, ancient civilizations, and economic powerhouses like China and Japan.