Which one of the following pairs is not correctly matched?

1) Computer : Charles Babbage

2) Radio : Karl Benz

3) Barometer : E. Torricelli

4) Dynamo : Michael Faraday

The communication satellites are invariably -

1) revolving at their own speed

2) stationary

3) geostationary

4) changing their track and speed

Which of the following is not a biome?

1) Desert

2) Grassland

3) Ecosystem

4) Tundra

Which of the following is not a pillar of much talked about 'Industry 4.0'?

1) Industrial Internet of Things

2) Use of solar power for manufacturing

3) Augmented Reality

4) Big Data Analytics

Oparin's theory about "Origin of life" is related to :

1) biological evolution

2) artificial evolution

3) chemical evolution

4) physical evolution

Who among the following laid the foundation of chemical sciences by establishing two important laws of chemical combination?

1) Joseph L. Proust

2) Democritus

3) Ernest Rutherford

4) Antoine L. Lavoisier

The term Biomagnifications is referred to as -

1) increase in the body weight

2) uncontrolled growth of harmful organisms

3) accumulation of increasing amount of non-degradable pollutant through food chain

4) increase in the number of bacteria in a culture medium

The term Biomagnifications is referred to as -

1) increase in the body weight

2) uncontrolled growth of harmful organisms

3) accumulation of increasing amount of non-degradable pollutant through food chain

4) increase in the number of bacteria in a culture medium

The term Biomagnifications is referred to as -

1) increase in the body weight

2) uncontrolled growth of harmful organisms

3) accumulation of increasing amount of non-degradable pollutant through food chain

4) increase in the number of bacteria in a culture medium

Which of the following was invented by Sir Humphry Davy ?

1) Safety Pin

2) Steam Engine

3) Safety Lamp

4) X-Rays

Which of the following was first Atomic Reactor in India ?

1) Purnima-1

2) Apsara

3) Kamini

4) Dhruva