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General Science Mcqs for PPSC, FPSC, NTS

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Fuse wire is made of_____________?

A. 63% tin and 37% lead
B. 63% lead and 37% tin
C. 63% tin and 37% aluminum
D. 63% lead and 37% aluminum

Which one of the following is the main culprit in the thinning of the Ozone layer in the earth’s stratosphere?

A. Carbon dioxide
B. Chlorofluorocarbons
C. Nitrogen oxides
D. Methane

Steering of a car involves?

A. A single force
B. Two forces acting in the same direction
C. Two forces acting along different lines and in opposite directions.
D. A pair of forces acting along the same line and in opposite direction

The property by virtue of which metals can be beaten into thin sheets is known as?

A. Ductility
B. Malleability
C. Conductivity
D. Density

The sky appears blue because of the earth’s atmosphere __________?

A. Scatters blue light
B. Reflects blue light
C. Transmits blue light
D. Has actual blue cover

A tight-rope walker carries a long pole which he holds across his body. The purpose of this pole is to__________?

A. Prop him up if he falls
B. Spread out his weight and reduce the pressure on the rope
C. Add extra weight to keep the rope tightly stretched
D. To keep the Center of gravity always above vertically above the rope

When water is filled in a bottle and is allowed to freeze, the bottle breaks because

A. Water expands on freezing
B. Bottle contracts at freezing point
C. temperature outside the bottle is less than that inside the bottle.
D. None of the above

People living in high altitudes (like mountains) usually have a _________?

A. smaller number of Red Blood Cells
B. larger number of Red Blood Cells
C. smaller number of White Blood Cells
D. larger number of White Blood Cells

Copper is used in the production of___________?

A. Brick kilns
B. Children toys
C. Kitchen utilities
D. Electric wires

The blue colour of the clear sky is due to_______________?

A. Reflection of light
B. Refraction of light
C. Diffraction of light
D. Dispersion of light

A device that converts mechanical energy into electric energy is called_______?

A. Motor.
B. Transformer.
C. Coil.
D. Generator.

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