GK (General Science)

B.S. Chandrasekhar's full name was Subrahmanyan Chandrasekhar, and he was a theoretical physicist renowned for his work on the theory of black holes and stellar evolution. He won the Nobel Prize in Physics in 1983 for his theoretical studies of the physical processes of importance to the structure and evolution of stars.

The SI unit of pressure is the Pascal (Pa), defined as one Newton per square meter. The other options are not standard units of pressure.

A potentiometer is used to measure electromotive force (emf) accurately by balancing it against a known potential difference. Voltmeters measure potential difference but are less accurate for emf.

AIDS is caused by the Human Immunodeficiency Virus (HIV). Malaria is caused by protozoa, ringworm by fungi, and typhoid by bacteria.

Isotopes are atoms of the same element that have the same number of protons (atomic number) but different numbers of neutrons (mass number).

Blood pressure is not constant during sleep; it fluctuates based on sleep stages (REM vs. non-REM) and other physiological factors.

Isotones are atoms that have the same number of neutrons but different atomic numbers. Isotopes have the same protons, and isobars have the same mass number.

An ammeter is an instrument used to measure the electric current in a circuit. Voltmeters measure voltage, and galvanometers detect small currents.

The unit of dynamic viscosity is the Pascal-second (Pa*s). Steradian is for solid angles, and Newton-second is for impulse.

Aryabhatta was a renowned ancient Indian mathematician and astronomer who made significant contributions to astronomy and mathematics.

Malaria is a disease caused by Plasmodium parasites, which are protozoa. AIDS is viral, ringworm is fungal, and typhoid is bacterial.

Srinivasa Ramanujan was a world-famous Indian mathematician known for his extraordinary contributions to mathematical analysis, number theory, and infinite series.

A galvanometer is a sensitive instrument used to detect and measure small electric currents. An ammeter measures the magnitude of current, while a voltmeter measures potential difference.

Ringworm is a common fungal infection of the skin. AIDS is viral, malaria is caused by a protozoan, and typhoid is a bacterial infection.

Impulse is defined as force multiplied by time, so its SI unit is Newton-second (N-s). Pascal is the unit of pressure.

Maize is generally considered a better source of certain minerals compared to common grains like wheat or barley, though this is a relative comparison in nutritional contexts.

Satyendra Nath Bose is famous for his collaboration with Albert Einstein in developing the Bose-Einstein statistics, which describes the behavior of elementary particles known as bosons.

Typhoid fever is caused by the bacterium Salmonella Typhi. AIDS is viral, ringworm is fungal, and malaria is protozoan.

The steradian is the SI unit of solid angle. It is a three-dimensional analogue of the radian.

A voltmeter is an instrument used for measuring electrical potential difference between two points in an electric circuit.