Discoveries & Inventions


  1. Meteorology is the science of:
    1. Weather
    2. Mateors
    3. Metals
    4. Earthquakes

  1. View Hint View Answer Discuss in Forum

    Meteorology is the scientific study of the atmosphere or weather. Meteorological phenomena are observable weather events which are explained by the science of meteorology. Those events are bound by the variables that exist in Earth’s atmosphere; temperature, air pressure, water vapor, etc.

    Correct Option: B

    Meteorology is the scientific study of the atmosphere or weather. Meteorological phenomena are observable weather events which are explained by the science of meteorology. Those events are bound by the variables that exist in Earth’s atmosphere; temperature, air pressure, water vapor, etc.


  1. Who invented Helicopter?
    1. Copernicus
    2. Sikorsky
    3. Cockrell
    4. Drinker

  1. View Hint View Answer Discuss in Forum

    Attempts to create helicopters can be traced back to Leonardo da Vinci, but the first working prototype helicopter, the VS-300, was invented by Igor Sikorsky in 1939. The next model he designed was the R4 in 1942, which was the world’s first mass produced helicopter.

    Correct Option: B

    Attempts to create helicopters can be traced back to Leonardo da Vinci, but the first working prototype helicopter, the VS-300, was invented by Igor Sikorsky in 1939. The next model he designed was the R4 in 1942, which was the world’s first mass produced helicopter.



  1. Sphygmomanometer measures the blood pressure in the
    1. Veins
    2. Arteries
    3. Eyes
    4. Synovial

  1. View Hint View Answer Discuss in Forum

    Systemic arterial blood pressure usually is measured using an instrument called a sphygmomanometer. This device consists of an inflatable rubber cuff connected by tubing to a compressible bulb and a glass tube containing a column of mercury. The bulb is used to pump air into the cuff, and a rise in the mercury column indicates the pressure produced.

    Correct Option: B

    Systemic arterial blood pressure usually is measured using an instrument called a sphygmomanometer. This device consists of an inflatable rubber cuff connected by tubing to a compressible bulb and a glass tube containing a column of mercury. The bulb is used to pump air into the cuff, and a rise in the mercury column indicates the pressure produced.


  1. The study of relation of animals and plants to their surroundings is called ________
    1. Ecology
    2. Ethrology
    3. Genealogy
    4. Iconology

  1. View Hint View Answer Discuss in Forum

    Ecology is defined as the study of the patterns and processes governing the abundance and distribution of organisms and their relationships to their environment. It is the science that deals with the inter-relationship between the various organisms living in an area and their relationship with physical environment.

    Correct Option: A

    Ecology is defined as the study of the patterns and processes governing the abundance and distribution of organisms and their relationships to their environment. It is the science that deals with the inter-relationship between the various organisms living in an area and their relationship with physical environment.



  1. The movement inside the Earth’s crust is studied by which of the following?
    1. Geology
    2. Seismology
    3. Plate tectonics
    4. Pantograph

  1. View Hint View Answer Discuss in Forum

    Scientists are able to understand Earth’s interior with the help of seismology. Seismology involves the study of seismic waves that travel through Earth. Seismic waves are sent through the earth during earthquakes. In contrast, Plate Tectonics is the study of the movement of the Earth’s crust due mainly to forces in the crust and upper mantle of the Earth’s interior.

    Correct Option: B

    Scientists are able to understand Earth’s interior with the help of seismology. Seismology involves the study of seismic waves that travel through Earth. Seismic waves are sent through the earth during earthquakes. In contrast, Plate Tectonics is the study of the movement of the Earth’s crust due mainly to forces in the crust and upper mantle of the Earth’s interior.