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

Government of India in collaboration with Norwegian Government has established a centre for Biodiversity Policy and Law at -

1) Dehradun

2) Chennai

3) Shillong

4) New Delhi

Geo stationary, satellite revolves at -

1) Any height

2) At fixed height

3) Height above pole

4) Height which depends upon its mass

Why is there a great concern about the 'microbeads' that are released into environment?

1) They are considered harmful to marine ecosystems

2) They are considered to cause skin cancer in children

3) They are small enough to be absorbed by crop plants in irrigated fields

4) They are often found to be used as food adulterants