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Olympiad Test Level 2: Science and Technology - 2 - Class 4 MCQ


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10 Questions MCQ Test - Olympiad Test Level 2: Science and Technology - 2

Olympiad Test Level 2: Science and Technology - 2 for Class 4 2024 is part of Class 4 preparation. The Olympiad Test Level 2: Science and Technology - 2 questions and answers have been prepared according to the Class 4 exam syllabus.The Olympiad Test Level 2: Science and Technology - 2 MCQs are made for Class 4 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test Level 2: Science and Technology - 2 below.
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Olympiad Test Level 2: Science and Technology - 2 - Question 1
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Categorize the programme (marked as (i), (ii), (iii) and (iv) in terms of system software and application software.

Detailed Solution for Olympiad Test Level 2: Science and Technology - 2 - Question 1

IOS and Android are System Software. These are designed to run computer's hardware and process programs. They are built in the system. Youtube and Google Chrome are application software. These are applications which are used by any user based on his/her requirements.

Olympiad Test Level 2: Science and Technology - 2 - Question 2
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He was a Scottish Engineer, who demonstrated the first working Television system in 1926. He was the inventor of both the first publicly demonstrated colour television. Who was he?

Detailed Solution for Olympiad Test Level 2: Science and Technology - 2 - Question 2

John Logie Baird invented first television. On 26 January, 1926, he first gave the public demonstration of the machine which he called as “televisor”.

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Olympiad Test Level 2: Science and Technology - 2 - Question 3
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Which of these was invented by James Watt?

Detailed Solution for Olympiad Test Level 2: Science and Technology - 2 - Question 3

Steam Engine was invented by James Watt. Steam engine is an engine that works by taking power from the steam. However, steam engines have direct effect on the environment as they cause air pollution by release of carbon dioxide.

Olympiad Test Level 2: Science and Technology - 2 - Question 4
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Choose the correct statement:

I. Application software runs on its own. It does not need human interface.
II. Operating System is a system software.
Detailed Solution for Olympiad Test Level 2: Science and Technology - 2 - Question 4
  • Statement I is incorrect because application software typically requires a human interface to interact with the user. It does not run on its own without user input or interaction.
  • Statement II is correct because an operating system is indeed a type of system software that manages hardware and provides services for application software.
Olympiad Test Level 2: Science and Technology - 2 - Question 5
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What Elisha Otis invented?
Detailed Solution for Olympiad Test Level 2: Science and Technology - 2 - Question 5

In 1853, American inventor Elisha Otis demonstrated a freight elevator equipped with a safety device to prevent falling in case a supporting cable should break. This increased public confidence in such devices. Otis established a company for manufacturing elevators and patented (1861) a steam elevator.
Many people think that he invented the elevator, but the truth is, he invented the elevator brake. He also invented the railway safety brake.

Olympiad Test Level 2: Science and Technology - 2 - Question 6
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Match the following:
Detailed Solution for Olympiad Test Level 2: Science and Technology - 2 - Question 6

Electric battery was invented by Alessandro Volta. An electric battery is a device which is used to give power to electrical devices. X-rays were invented by Roentgen. X-rays are used to examine various parts of the body. Printing Machine was invented by Johannes Gutenberg. With this invention it was possible to print large number of books. Barometer was invented by Evangelista Torricelli. Barometer is a device which is used to measure atmospheric pressure.

Olympiad Test Level 2: Science and Technology - 2 - Question 7
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A pulley is which type of machine?
Detailed Solution for Olympiad Test Level 2: Science and Technology - 2 - Question 7

A pulley is classified as a simple machine because it consists of a wheel on an axle or shaft that is designed to support movement and change the direction of force.

Olympiad Test Level 2: Science and Technology - 2 - Question 8
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Flagpoles have    
Detailed Solution for Olympiad Test Level 2: Science and Technology - 2 - Question 8

A flagpole typically has a pulley. A pulley is used to raise and lower the flag easily by using a rope that runs over a wheel, making it simpler to manage the flag without climbing the pole.

Olympiad Test Level 2: Science and Technology - 2 - Question 9
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Which gas is emitted by vehicles?
Detailed Solution for Olympiad Test Level 2: Science and Technology - 2 - Question 9

Carbon-monoxide is emitted from the exhaust pipe of the vehicles by the combustion of fuels. It is a poisonous gas.

Olympiad Test Level 2: Science and Technology - 2 - Question 10
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Which among the following is solid but become liquid at room temperature?
Detailed Solution for Olympiad Test Level 2: Science and Technology - 2 - Question 10

Ice is solid at 00C, but when it is kept at room temperature, the temperature increases, therefore, it becomes liquid.

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