In nuclear reactors, a neutron moderator is a medium that regulates or reduces the speed of fast neutrons, turning them into thermal neutron moderator in many nuclear reactors.

Correct Option: B

In nuclear reactors, a neutron moderator is a medium that regulates or reduces the speed of fast neutrons, turning them into thermal neutron moderator in many nuclear reactors.

Until' 1958 when Jack Kilby came up with the solution to the cumbersome and bulky circuits in the computers. His idea was to make all the components and the chip out of the same block (monolith) of semiconductor material or integrated circuit chip, which largely contributed to the miniaturization of earlier computer device.

Correct Option: B

Until' 1958 when Jack Kilby came up with the solution to the cumbersome and bulky circuits in the computers. His idea was to make all the components and the chip out of the same block (monolith) of semiconductor material or integrated circuit chip, which largely contributed to the miniaturization of earlier computer device.

Artificial satellites large 'photoelectric panels' or 'Solar panels' around them to capture the sunlight available directly from sunlight. The energy captured can be stored in batteries to the Earth. So, solar cell are largely used for generating electricity in artifical satellites.

Correct Option: A

Artificial satellites large 'photoelectric panels' or 'Solar panels' around them to capture the sunlight available directly from sunlight. The energy captured can be stored in batteries to the Earth. So, solar cell are largely used for generating electricity in artifical satellites.

Diskagma Buttonii a 2.2 billion year old fossils discovered in South Africa

Correct Option: A

Diskagma Buttonii a 2.2 billion year old fossils discovered in South Africa

Andrea Colaco, a native of South Goa's Velim developed accurate 3D gesture sensing technology on Mobile device.

Correct Option: A

Andrea Colaco, a native of South Goa's Velim developed accurate 3D gesture sensing technology on Mobile device.