The theory that gases in the atmosphere might increase Planet Earth’s temperature was first postulated by Joseph Fourier in 1827, a scientist who also seems to have coined the term “greenhouse gases.” But it wasn’t until 1896 that a research chemist by the name of Svante Arrhenius quantified the greenhouse gas theory and apparently coined the term “greenhouse effect.”

Correct Option: A

The theory that gases in the atmosphere might increase Planet Earth’s temperature was first postulated by Joseph Fourier in 1827, a scientist who also seems to have coined the term “greenhouse gases.” But it wasn’t until 1896 that a research chemist by the name of Svante Arrhenius quantified the greenhouse gas theory and apparently coined the term “greenhouse effect.”

The distribution of energy in the spectrum of radiations of a hot body cannot be explained by applying the classical concepts of physics. Max Planck gave an explanation to this observation by his Quantum Theory of Radiation.

Correct Option: C

The distribution of energy in the spectrum of radiations of a hot body cannot be explained by applying the classical concepts of physics. Max Planck gave an explanation to this observation by his Quantum Theory of Radiation.

A theory of electromagnetism was developed by various physicists over the course of the 19th century, culminating in the work of James Clerk Maxwell, who unified the preceding developments into a single theory and discovered the electromagnetic nature of light. In classical electromagnetism, the electromagnetic field obeys a set of equations known as Maxwell’s equations.

Correct Option: C

A theory of electromagnetism was developed by various physicists over the course of the 19th century, culminating in the work of James Clerk Maxwell, who unified the preceding developments into a single theory and discovered the electromagnetic nature of light. In classical electromagnetism, the electromagnetic field obeys a set of equations known as Maxwell’s equations.

Acquired Immunodeficiency Syndrome (AIDS) was first reported in 1981 in San Francisco and New York. However, it was in 1983-84 that the causative virus was isolated from patients of AIDS and was named HIV in 1986.

Correct Option: C

Acquired Immunodeficiency Syndrome (AIDS) was first reported in 1981 in San Francisco and New York. However, it was in 1983-84 that the causative virus was isolated from patients of AIDS and was named HIV in 1986.

Alexander Fleming discovered the antibiotic substance penicillin from the mould Penicillium notatum in 1928, for which he shared the Nobel Prize in Physiology or Medicine in 1945.

Correct Option: C

Alexander Fleming discovered the antibiotic substance penicillin from the mould Penicillium notatum in 1928, for which he shared the Nobel Prize in Physiology or Medicine in 1945.