Everyday Science

Freon is a common trade name for a group of refrigerant gases used in air conditioners and refrigerators to absorb and release heat during the cooling cycle.

Neptune is the planet that takes the longest time to revolve around the Sun, completing one orbit in about 165 Earth years, making it the slowest revolving planet in our solar system.

The study of human beauty is called Kalology, which focuses on the principles and appreciation of beauty, especially in humans. The other options refer to different fields: Oncology is the study of cancer, Agrostology is the study of grasses, and Argology is not a recognized scientific discipline.

Robert Fulton is credited with inventing the first commercially successful steamboat, which revolutionized water transportation in the early 19th century. Although others contributed to steam engine development, Fulton made the steamboat practical and widely used.

Saturn is known as the ringed planet due to its prominent ring system. It is also the least dense planet in the Solar System and the second largest after Jupiter, making option B correct.

Sound travels approximately 4.3 to 5 times faster in water than in air because water is denser and more elastic, allowing sound waves to propagate more quickly. Among the given options, 5 is the closest and most accurate estimate.

Vitamin C is commonly known as Ascorbic Acid, which is essential for preventing scurvy and acts as an antioxidant. The other options are different substances unrelated to vitamin C.

The smell of cooking spreads through the process of diffusion, where odor molecules move from an area of higher concentration (the kitchen) to areas of lower concentration (other rooms), gradually spreading throughout the house.

Itai-Itai disease is caused by cadmium poisoning, which leads to severe pain and bone softening. This disease was first identified in Japan due to cadmium contamination in water and rice.

There are 10 millimeters in 1 centimeter, so in 10 centimeters there are 10 × 10 = 100 millimeters.