scientist, discoveries & inventions MCQ section 1 MCQ Questions & Answers Detailed Explanation

Answer: (d)

Epigraphy is the study of inscriptions or epigraphs as writing. It is the science of identifying graphemes, clarifying their meanings, classifying their uses according to dates and cultural contexts, and drawing conclusions about the writing and the writers. A per-son using the methods of epigraphy is called an epigrapher or epigraphist.

Answer: (c)

The electron is a subatomic particle with a negative elementary electric charge. An electron has a mass that is approximately 1/1836 that of the proton.

The intrinsic angular momentum (spin) of the electron is a half-integer value in units of h, which means that it is a fermion. Like all matter, they have quantum mechanical properties of both particles and waves, so they can collide with other particles and can be diffracted like light.

The electron was identified as a particle in 1897 by J. J. Thomson and his team of British physicists.

Answer: (b)

Mosaic is the web browser credited with popularizing the World Wide Web. Marc Andreessen is best known as the co-author of Mosaic, the first widely used Web browser.

He is one of only six inductees in the World Wide Web Hall of Fame announced at the first international conference on the World Wide Web in 1994.

Answer: (c)

Answer: (d)

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.

Answer: (a)