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Class 7  >  GK Olympiad for Class 7  >  Olympiad Test Level 2: Technological Developments and Inventions- 1 Download as PDF

Olympiad Test Level 2: Technological Developments and Inventions- 1


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10 Questions MCQ Test GK Olympiad for Class 7 | Olympiad Test Level 2: Technological Developments and Inventions- 1

Olympiad Test Level 2: Technological Developments and Inventions- 1 for Class 7 2023 is part of GK Olympiad for Class 7 preparation. The Olympiad Test Level 2: Technological Developments and Inventions- 1 questions and answers have been prepared according to the Class 7 exam syllabus.The Olympiad Test Level 2: Technological Developments and Inventions- 1 MCQs are made for Class 7 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test Level 2: Technological Developments and Inventions- 1 below.
Solutions of Olympiad Test Level 2: Technological Developments and Inventions- 1 questions in English are available as part of our GK Olympiad for Class 7 for Class 7 & Olympiad Test Level 2: Technological Developments and Inventions- 1 solutions in Hindi for GK Olympiad for Class 7 course. Download more important topics, notes, lectures and mock test series for Class 7 Exam by signing up for free. Attempt Olympiad Test Level 2: Technological Developments and Inventions- 1 | 10 questions in 20 minutes | Mock test for Class 7 preparation | Free important questions MCQ to study GK Olympiad for Class 7 for Class 7 Exam | Download free PDF with solutions
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Olympiad Test Level 2: Technological Developments and Inventions- 1 - Question 1
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What is the name of the Indian origin scientist who has developed the world’s first wireless pacemaker?

Olympiad Test Level 2: Technological Developments and Inventions- 1 - Question 2
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What is the name of the world’s lightest material developed by ISRO scientists?

Olympiad Test Level 2: Technological Developments and Inventions- 1 - Question 3
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Many transplanted seedlings do not grow because

Olympiad Test Level 2: Technological Developments and Inventions- 1 - Question 4
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Who discover ed an tiseptic surgery?
Detailed Solution for Olympiad Test Level 2: Technological Developments and Inventions- 1 - Question 4

Joseph Lister  introduced carbolic acid to sterilise surgical instruments and to clean wounds, which led to a reduction in postoperative infections and made surgery safer for patients.

Olympiad Test Level 2: Technological Developments and Inventions- 1 - Question 5
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Which device is used to listen the vibrations of the heart and lungs?
Olympiad Test Level 2: Technological Developments and Inventions- 1 - Question 6
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The system for writing by blind people was invented by
Detailed Solution for Olympiad Test Level 2: Technological Developments and Inventions- 1 - Question 6

The system for writing for blind was invented by Louis Braille

Olympiad Test Level 2: Technological Developments and Inventions- 1 - Question 7
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Who discovered the link between electricity and magnetism?
Detailed Solution for Olympiad Test Level 2: Technological Developments and Inventions- 1 - Question 7

Michael Faraday discovered link between electricity and magnetism called electromagnetism.

Olympiad Test Level 2: Technological Developments and Inventions- 1 - Question 8
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'X' metal is soft and can be easily cut with a knife. It catches fire when exposed to air and water and is also used in street lights. What is 'X'?
Olympiad Test Level 2: Technological Developments and Inventions- 1 - Question 9
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Some of the inventions and t heir inven tors are given below. Select the mismatched pairs.
(i) Atomic bomb – J. Robert Oppenheimer
(ii) Pian o – Georges Audemars
(iii) Steel – Henry Bessemer
(iv) Cinema – Bartolomeo Cristofori
Olympiad Test Level 2: Technological Developments and Inventions- 1 - Question 10
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His discovery of the material parasite in the gastrointestinal tract of the Anopheles mosquito led to the realisation that malaria was transmitted by Anopheles. He received the Nobel Prize for Physiology or Medicine in 1902 for his work on the transmission of malaria. Who was he?
Detailed Solution for Olympiad Test Level 2: Technological Developments and Inventions- 1 - Question 10

He was Ronald Ross

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