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Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2


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10 Questions MCQ Test GK Olympiad for Class 6 | Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2

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Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 1

Electric motor was invented by

Detailed Solution for Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 1

In 1821 Faraday set about trying to understand the work of Ørsted and Ampère, devising his own experiment using a small mercury bath. This device, which transformed electrical energy into mechanical energy, was the first electric motor.

Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 2

‘DVD’ was invented and developed by

Detailed Solution for Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 2

Historic invention of the day: 1995: DVD is an optical disc storage format, invented and developed by Philips, Sony, Toshiba, and Panasonic in 1995. DVDs offer higher storage capacity than Compact Discs while having the same dimensions.

Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 3

Who is known as ‘Father of Refrigeration’?

Detailed Solution for Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 3

Jacob Perkins, who worked with Evans, received a patent for a vapor-compression cycle using liquid ammonia in 1835, according to History of Refrigeration. For that, he is sometimes called the "father of the refrigerator." John Gorrie, an America doctor, also built a machine similar to Evans' design in 1842.

Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 4

Sir Isaac Newton was an

Detailed Solution for Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 4

Although Isaac Newton is well known for his discoveries in optics (white light composition) and mathematics (calculus), it is his formulation of the three laws of motion the basic principles of modern physics for which he is most famous.

Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 5

Alexander Graham Bell awarded US patent for his invention of telephone in

Detailed Solution for Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 5

The date was February 14, 1876. He was the fifth entry of that day, while Gray's lawyer was 39th. Therefore, the U.S. Patent Office awarded Bell with the first patent for a telephone, US Patent Number 174,465 rather than honor Gray's caveat.

Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 6

Rust is an oxide, usually red oxide formed by the reaction of metal ‘X’ and oxygen in the presence of water and air. Identify ‘X’.

Detailed Solution for Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 6

Ferric oxide or Iron oxide commonly known as rust is the oxide of iron formed in the presence of water and air.
4Fe + 3O2 ---> 2Fe2O3

Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 7

Time can be measured using many units depending on the duration of a phenomenon. Hours, minutes and seconds are common units of time. Which of the following is also a unit of time?

Detailed Solution for Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 7

The word Fortnight was derived from Fourteen nights and it denotes the time period of 2 weeks which includes fourteen days and nights.

Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 8

In which year the first nuclear test was conducted by India under the code-name of Smiling Budha?

Detailed Solution for Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 8
  • On 18 May 1974, India conducted its first nuclear test at Pokhran in Rajasthan.
  • The Indian government claimed the test was for peaceful purposes only, naming it "Smiling Buddha". It involved a fission device using plutonium.
  • Although officially known as Pokhran I, the 1974 test was informally named “Smiling Buddha” and is frequently referred to as such.
Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 9

Which kind of waves are used to make and receive cellphone calls?

Detailed Solution for Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 9
  • The basic building block of radio communications is a radio wave. Like waves in a pond, a radio wave is a series of repeating peaks and valleys. 
  • Radio waves are a type of electromagnetic radiation best known for their use in communication technologies, such as television, mobile phones, and radios. 
  • It is generated by a transmitter and then detected by a receiver. These devices receive radio waves and convert them to mechanical vibrations in the speaker to create sound waves.
Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 10

NASA’s new spacecraft for astronauts will carry astronauts into deep space and then return them home to Earth. It will be able to travel till asteroids or even Mars. Which spacecraft are we talking about?

Detailed Solution for Olympiad Test Level 1: Scientific and Technological Development and Inventions- 2 - Question 10
  • NASA’s Orion spacecraft is built to take humans farther than they’ve ever gone before. Orion will serve as the exploration vehicle that will carry the crew to space, provide emergency abort capability, sustain the crew during the space travel, and provide safe re-entry from deep space return velocities.
  • The mission will pave the way for flights with astronauts beginning in the early 2020s.
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