Free GKT Science and Technology Questions and Answers

Question 1

What is the main element used in making solar panels?

Accepted Answer

Silicon

Answer

Silicon is the main element used in making solar panels due to its semiconductor properties. It efficiently converts sunlight into electricity through the photovoltaic effect. Its abundance and effectiveness make it the primary material for most photovoltaic cells.

Question 2

Which planet is known as the "Red Planet"?

Accepted Answer

Mars

Answer

Mars is known as the 'Red Planet' because of the iron oxide, or rust, prevalent on its surface. This gives the planet its distinctive reddish-orange hue. The presence of iron oxide is a key characteristic that makes Mars easily identifiable in our solar system.

Question 3

What is the unit of electric current?

Accepted Answer

Ampere

Answer

The unit of electric current is the Ampere (A). It quantifies the rate of flow of electric charge through a conductor. One Ampere is defined as one Coulomb of charge passing a point in one second.

Question 4

Which was the first human-made satellite to orbit the Earth?

Accepted Answer

Sputnik 1

Answer

Sputnik 1 was the first human-made satellite to orbit the Earth, launched by the Soviet Union on October 4, 1957. Its successful launch marked the beginning of the Space Age and triggered the space race. This pioneering satellite provided valuable data about the Earth's atmosphere and the challenges of spaceflight.

Question 5

What does DNA stand for?

Accepted Answer

Deoxyribonucleic Acid

Answer

DNA stands for Deoxyribonucleic Acid. It is a complex molecule that carries all the genetic information for the development, functioning, growth, and reproduction of all known organisms and many viruses. DNA is the fundamental building block of heredity.

GKT - General Knowledge Test Practice Test

GKT - General Knowledge Test Practice Test

Free GKT Science and Technology Questions and Answers