Question

A. Choose the correct option.
Which kind of a simple machine is the beater part of a mixer?
a) pulley
b) wheel and axle
c) pulley and lever
d) two pulleys
2. The fulcrum of a lever cannot be
a) at the end of a bar.
b) at middle of bar.
c) between middle and end
d) touching the bar
3. Which of the following is a lever?
a) a drinking straw
b) a bottle opener
c) a matchstick
d) a pencil
4. Which simple machine could you use to hold two objects together?
a) lever
b) pulley
c) screw
d) wheel and axle
5. An example of a lever working with another simple machine is
a) paper cutter
b) trolley
c) hockey stick
d) sugar tongs
B. State whether the following statements are true or false. Correct the false statements.
1. A simple machine reduces the work done.
2. A screw is an inclined plane that wounds around a rod.
3. In a lever of Ill class, the fulcrum is in between load and effort.
4. The maximum efficiency of a machine can be 1.
5. Some devices have two or more simple machines combined together.
6. A wheel and axle' consists of two co-axial wheels of different or same size.​

Answer 1

Answer:

n the political map of India, show the following place and write their names

1.the place where the Jallianwala bagh incident took place

2. the city the city where the cotton mills labour Satyagraha took place in 1918

3. Noida software technology park

4. Pradeep sea port

5. kalpakkan nuclear power plant

Answer 2

Answer:

5points 5 answer maximum

Explanation:

1. b
2. a
3. b
4. d
5. a