Who invented Jet Engine ?

A:Sir Frank Whittle


Dr. Hans von Ohain and Sir Frank Whittle are recognized as the co-inventors of the jet engine. Each was working separately and knew nothing of the others work. Although Whittle started first, von Ohain was first to design and develop a turbojet engine to power an aircraft.

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Which scientist discovered the radioactive element radium?

A:Marie Curie

Marie Skłodowska-Curie was a Polish and naturalized-French physicist and chemist who conducted pioneering research on radioactivity.

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In which decade was the first solid state integrated circuit demonstrated?

A: 1950s

On September 12, 1958, Jack Kilby demonstrated the first working IC while working for Texas Instruments, although the U.S. patent office awarded the first patent for an integrated circuit to Robert Noyce of Fairchild.

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Who has written the book 'Blood Brothers' ?

A: M.J.Akbar


Mobashar Jawed "M.J." Akbar is a leading Indian journalist and author and national spokesperson of the Bharatiya Janta Party.

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Which is the India's first Nuclear Submarine ?

A: INS Arihant


INS Arihant is the lead ship of India's Arihant-class of nuclear-powered ballistic missile submarines. The 6,000 tonne vessel was built under the Advanced Technology Vessel project at the Ship Building Centre in Visakhapatnam.

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Who painted the portrait of Mona Lisa lying in the Louvre Museum at Paris ?

A: Leonardo da Vinci


Leonardo di ser Piero da Vinci was an Italian Renaissance polymath: painter, sculptor, architect, musician, mathematician, engineer, inventor, anatomist, geologist, cartographer, botanist, and writer.

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Who was the founder of Saka era ?

A: Kanishka


Kanishka was the ruler of northern India and the Saka era was popularised in south India. In that case it cannot be possible for Kanishka to introduce Sakabada, more popular in the southern parts of India. Moreover they have also pointed out that the Saka era was associated with the name of the Saka Satraps and did not have any connection with the Kushanas.

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