Science

The Great Spot, commonly known as the Great Red Spot, is a giant storm on the planet Jupiter. It is a persistent high-pressure region in Jupiter's atmosphere, producing an anticyclonic storm.

The five planets visible to the naked eye without a telescope are Mercury, Venus, Mars, Jupiter, and Saturn. These planets have been known since ancient times and can be seen as steady points of light that do not twinkle. Uranus is barely visible to the naked eye under very dark skies and excellent eyesight, but it is generally considered not visible without optical aid. Neptune and Pluto are too faint to be seen without a telescope. Therefore, the correct answer is 5, which corresponds to option D.

The position of an element in the Periodic Table is determined by its atomic number, which is the number of protons in the nucleus of the atom. This number defines the element's identity and its place in the table.

One light year is the distance that light travels in one year, which is approximately 9.5 x 10^12 kilometers. Options A and B are incorrect due to incorrect powers of ten, and option D is incorrect because option C is the correct value.

Digestion of food is completed in the small intestine where enzymes break down nutrients fully for absorption. The stomach initiates digestion, and the large intestine mainly absorbs water and forms feces.

The Great Red Spot is a giant storm located on the planet Jupiter. It is a well-known and long-lasting feature of Jupiter's atmosphere, making option B the correct answer.

Dry ice is the solid form of carbon dioxide (CO2). It sublimates directly from solid to gas at -78.5°C without becoming liquid, which distinguishes it from other solids like oxygen or hydrogen.

Vitamin D deficiency leads to rickets, a condition characterized by weak or soft bones in children due to impaired calcium absorption. Scurvy is caused by vitamin C deficiency, and hair fall is not directly linked to vitamin D deficiency.

The macula is the most sensitive part of the eye responsible for sharp, central vision, making it the most sensitive layer compared to the cornea or pupil.

A lactometer is an instrument used to measure the purity or density of milk. It helps determine if milk has been adulterated with water or other substances. Therefore, the purity measured by a lactometer is that of milk.