Everyday science mcqs for nts,fpsc,ppsc,interviews and all other competative exams.Important MCQS
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 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.
_________ is anything that takes up space and has mass.
A. Matter
B. Gravity
C. Energy
D. Plasma
All matter is made of ___________?
A. Air
B. Water
C. Vibrations
D. Atoms
What are considered the building blocks of matter?
A. Molecules
B. Protons
C. Elements
D. Atoms
What are the three subatomic particles of an atom?
A. Protons,Neutrons & Electrons
B. Protons,Nucleus & Electrons
C. Protons,Nucleus & Elements.
D. Elements,Nucleus & Protons