Discoveries & Inventions


  1. Which instrument is used for photographing the Sun?









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    The spectroheliograph is an instrument used in astronomy which captures a photographic image of the Sun at a single wavelength of light, a monochromatic image. The wavelength is usually chosen to coincide with an spectral wavelength of one of the chemical elements present in the Sun.

    Correct Option: D

    The spectroheliograph is an instrument used in astronomy which captures a photographic image of the Sun at a single wavelength of light, a monochromatic image. The wavelength is usually chosen to coincide with an spectral wavelength of one of the chemical elements present in the Sun.


  1. Preservation of historical articles is done in science of









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    Museology is the study of museums and museum curation. Because the framework of museums lies in material objects as primary sources, it is indirectly concerned with the preservation of historical articles.

    Correct Option: C

    Museology is the study of museums and museum curation. Because the framework of museums lies in material objects as primary sources, it is indirectly concerned with the preservation of historical articles.



  1. ‘Agronomy’ is the practice of raising ______









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    Agronomy is the science and technology of raising plants for food, fuel, fibre etc. To be specific, it is a branch of agricultural science that deals with the study of crops and the soils in which they grow. Agronomists, sometimes known as crop scientists, specialize in producing and improving food crops through conducting experiments and developing methods of production.They conduct research in crop rotation, irrigation and drainage, plant breeding, soil classification, soil fertility, weed control, and other areas.

    Correct Option: B

    Agronomy is the science and technology of raising plants for food, fuel, fibre etc. To be specific, it is a branch of agricultural science that deals with the study of crops and the soils in which they grow. Agronomists, sometimes known as crop scientists, specialize in producing and improving food crops through conducting experiments and developing methods of production.They conduct research in crop rotation, irrigation and drainage, plant breeding, soil classification, soil fertility, weed control, and other areas.


  1. Anemometer is an instrument meant for measuring









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    An anemometer is a device used for measuring the speed of wind. Anemometers are important tools for meteorologists, who study weather patterns. They are also important to the work of physicists, who study the way air moves.

    Correct Option: C

    An anemometer is a device used for measuring the speed of wind. Anemometers are important tools for meteorologists, who study weather patterns. They are also important to the work of physicists, who study the way air moves.



  1. Which instrument is used for measuring humidity of atmosphere?









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    A hygrometer, also known as a psychrometer, is used to measure the humidity in the air. A common way these devices work is by using a material that attracts moisture, and that changes depending on how moist it is. Aside from greenhouses and industrial spaces, hygrometers are also used in some incubators, saunas, humidors and museums.

    Correct Option: D

    A hygrometer, also known as a psychrometer, is used to measure the humidity in the air. A common way these devices work is by using a material that attracts moisture, and that changes depending on how moist it is. Aside from greenhouses and industrial spaces, hygrometers are also used in some incubators, saunas, humidors and museums.