The Y-20 aircraft is a large military transport aircraft of which of the following countries?

1) Japan

2) India

3) China

4) France

Which one of the following statements about a satellite orbiting around the Earth is correct ?

1) Satellite is kept in orbit by remote control from ground station

2) Satellite is kept in orbit by retro-rocket and solar energy keeps it moving around the Earth

3) Staellite requires energy from solar panels and solid fuels for orbiting

4) Satellite does not require any energy for orbiting

Radioactivity is measured by -

1) GM Counter

2) Polarimeter

3) Calorimeter

4) Colorimeter

Which of the following fuels would produce minimum environmental pollution ?

1) Hydrogen

2) Diesel

3) Kerosene

4) Coal

An artificial satellite can be tracked very precisely from the earth by using -

1) Doppler effect

2) Radar

3) Sonar

4) Pulsar

A mobile phone charger is -

1) An inverter

2) A step up transformer

3) A step down transformer

4) A UPS

Which one of the following is not a natural hazard?

1) Earthquake

2) Tsunami

3) Flash flood

4) Nuclear accidents

_{Which one of the following is not a natural hazard?}

_{1) Earthquake}

_{2) Tsunami}

_{3) Flash flood}

_{4) Nuclear accidents}

A communication satellite is launched from the surface of earth along the direction -

1) South to North

2) North to South

3) West to East

4) East to West

Which one of the following elements does not occur in a free state in nature?

1) Carbon

2) Silver

3) Silicon

4) Sulphur

Who is the father of scientific management?

1) Henry Fayol

2) Elton Mayo

3) Cheston Bernard

4) F. W. Taylor