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
The sky appears blue because the earth's atmosphere __________
(A) Scatters blue light
(B) Reflects blue light
(C) Transmits blue light
(D) Has actual blue cover
The property by virtue of which metals can be beaten into thin sheets is known as
(A) Ductility
(B) Malleability
(C) Conductivity
(D) Density
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 direction.
(D) A pair of forces acting along the same line and in opposite direction
Which one of the following is the main culprit in the thinning of Ozone layer in the earth’s stratosphere
(A) Carbon dioxide
(B) Chlorofluorocarbons
(C) Nitrogen oxides
(D) Methane
___________are negatively (_) charged particles of an atom
(A) Protons
(B) Neutrons
(C) Electrons
(D) None of These
_____________ are positively (+) charged particles
(A) Neutrons
(B) Electrons
(C) Protons
(D) None of These