First automobile powered by an internal combustion engine that is fuelled by hydrogen is invented in
Answer: A
It was 1807.
Francois Isaac de Rivaz of Switzerland built a vehicle driven by an internal combustion engine burning a mixture of hydrogen and oxygen, ignited by an electric spark - the first internal combustion vehicle of any kind.
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What toy did George Lerner create for Hasbro company in 1952?
Answer: C
It was Mr Potato Head.
George Lerner sold the idea to Hasbro in 1952 as a set of plastic features to be pushed into a real potato. It was the first toy advertised on television, and the plastic body came only in 1964, when parents complained of rotting vegetables.
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Scientists who have provided basis for inventing Circuit Breaker are
Answer: C
Both Joseph Henry and Michael Faraday.
Their independent discovery of electromagnetic induction in the early 1830s underlies the circuit breaker, which senses excess current through a coil and uses the magnetic force it generates to trip the contacts.
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In which decade was the telephone invented?
Answer: C
Alexander Graham Bell's notebook entry of 10 March 1876 describes his successful experiment with the telephone. Speaking through the instrument to his assistant, Thomas A. Watson, in the next room, Bell utters these famous first words, "Mr. Watson -- come here -- I want to see you".
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