Everyday Science

Archaeology is a branch of Anthropology that studies human history and prehistory through the excavation of sites and analysis of artifacts and other physical remains. Therefore, option A is correct.

Nickel (Ni) is commonly used as a catalyst in the hydrogenation of oils because it facilitates the addition of hydrogen to unsaturated fats, converting them into saturated fats. Lead (Pb), copper (Cu), and platinum (Pt) are not typically used for this process.

A nephoscope is an instrument specifically designed to determine the direction of movement of clouds, making option A correct. Stethoscope is used for listening to internal body sounds, and metroscope is not a standard meteorological instrument.

Heat exchanger tubes are typically made from metals like carbon steel, stainless steel, or copper due to their good thermal conductivity and mechanical properties. Lead is not used because it is soft, has poor mechanical strength, and is toxic, making it unsuitable for heat exchanger tubes.

Transport is often called the 'Lifeblood of industries' because it enables the movement of raw materials to factories and finished goods to markets, which is essential for industrial operations.

The spleen is called the 'Blood Bank' because it stores a reserve of blood and helps filter and manage blood cells in the body. None of the other organs listed serve this function.

The Nobel Prize is widely recognized as the most prestigious award in the field of science, honoring outstanding contributions in physics, chemistry, medicine, and related disciplines. The other options are either unrelated to science or less prominent in this context.

H5N1 is a subtype of the influenza virus that causes bird flu, also known as avian influenza. It is not related to AIDS or general fever, and 'non' is not a valid answer.

Vitamin B-7 is known as Biotin. It plays an important role in metabolism and is essential for healthy skin, hair, and nails.

Red-green color blindness includes both protanopia (difficulty distinguishing red) and deuteranopia (difficulty distinguishing green). Since both are types of red-green color blindness, the correct answer is 'both a & b'.