alleryStart learning →How many classical simple machines are there?
A4
B6
C8
D10
Answer & Solution
Correct answer: B. 6
The six classical ones are lever, wheel and axle, pulley, inclined plane, wedge and screw.
Keep practising Technology
Browse all Technology questions for Olympiad (Class 4), or explore more General Knowledge topics.
Related questions
The Neolithic Revolution is also called the First what Revolution?Early people kept fire going with wood and which black fuel?Early people built temporary huts from which material?A chimpanzee dips a leaf in water and sucks it dry. What is the leaf acting as?Machines first replaced many workers in which kind of work, such as farming?The oldest record of a sailing ship shows a boat on which river?Which ancient city had a big sewer called the Cloaca Maxima?Early roads in the city of Ur were paved with what?