Science Class 5th
241. Machines make our work easy.
A) True
B) False
242. Which of the following is not a machine:
A) Wedge
B) Inclined plane
C) Lever
D) None of the above
243. Wedge is ______ in shape.
A) Circular
B) Rectangular
C) Conical
D) Triangular
244. Which of the following is used to separate two objects:
A) Pliers
B) Lever
C) Wedges
D) Inclined Planes
245. _______ is used to lift heavy objects:
A) Stairs
B) Wedges
C) Inclined Planes
D) Lever
246. The Plane surface in the inclined plane is at ______ angle:
A) Right Angle
B) Acute angle
C) Obtuse angle
D) 180 Angle
247. The fixed point in the lever is called:
A) Pivot
B) Load
C) Bar
D) Slider
248. The rod in lever turns when force called ________ applied.
A) Gravity
B) Effort
C) Pressure
D) None of the above
249. There are ______ classes of levers.
A) Three
B) Four
C) Seven
D) None
250. In which class of levers the pivot is between the effort and load.
A) Lever Class 1
B) Lever Class 2
C) Lever Class 3
D) None of the above
251. Claw hammer works on which lever class principle:
A) Lever Class 1
B) Lever Class 2
C) Lever Class 3
D) None of the above
252. In the _________ the load is between the pivot and effort.
A) Lever Class 1
B) Lever Class 2
C) Lever Class 3
D) None of the above
253. A Bottle Opener is an example of:
A) Lever Class 1
B) Lever Class 2
C) Lever Class 3
D) None of the above
254. In the ________ , the effort is between the pivot and load.
A) Lever Class 1
B) Lever Class 2
C) Lever Class 3
D) None of the above
255. A Stapler works on on which of the following:
A) Lever Class 1
B) Lever Class 2
C) Lever Class 3
D) None of the above
256. Unit of force in SI is:
A) Meter
B) Pound
C) Kilogram
D) Newton
257. Ball bearing reduce friction because they:
A) Reduce Roughness Of Surface
B) Roll On Surface To Reduce Friction
C) Increase Surface In Contact
D) Heat Up The Surface Area In Contact
258. A sharpener is an example of:
A) Lever
B) Wedge
C) Inclined Plane
D) Inertia
259. The Quantity of matter present in an object is it:
A) Density
B) Weight
C) Mass
D) Volume
260. Tendency of all objects and matter in the Universe to resist any change in it’s state of rest or of uniform motion is called:
A) Friction
B) Inertia
C) Gravity
D) Air Resistance