18).Which type of railway engines were invented in the beginning? *
Steam engine
Electric engine
Diesel engine
Monorail
This is a required question
19).How many metres is equal to 1 kilometer? *
10
100
1000
10,000
20).Which of the following is the largest unit of length? *
Metre
Kilometer
centimetre
Millimetre
21).Which is the standard device to measure length? *
Compass box
Protractor
Metre scale
Set square
22).What does the tailor use to take measurement of your body? *
Metal scale
Tape measure
Plastic scale
Scale
23).Which of the following can be used to measure the length of a curved line? *
Metre scale
Thread
Handspan
Finger
24).What is the type of motion executed by the blades of a fan? *
Rectilinear motion
Curved motion
Circular motion
None of these
25).The invention of which of the following modes of transport made space travel possible? *
Aeroplane
Helicopter
Spaceship
Hovercraft
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Answer:
The first mode of transportation was created in the effort to traverse water: boats. Those who colonized Australia roughly 60,000–40,000 years ago have been credited as the first people to cross the sea, though there is some evidence that seafaring trips were carried out as far back as 900,000 years ago.
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Answer:
18. stream engine
19. 1000 meter
20. kilometer
21. meter scale
22. tape measure
23. thread
24. circular motion
25.aeroplain
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