A truck has tyres of area 3 m^2. It puts a pressure of 4000 N/m^2 on the road. What is the weight of the truck (Hint: Weight =Force)...? Mcqs

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A truck has tyres of area 3 m^2. It puts a pressure of 4000 N/m^2 on the road. What is the weight of the truck (Hint: Weight =Force)...?

(A) 8000 N
(B) 12000 N

(C) 16000 N
(D) 20000 N

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A horizontal line that passes through the lens is called ____...?

(A) Focal Point
(B) Optical Centre

(C) Centre of Curvature
(D) Principal Axis

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A slow-running pendulum clock can be speeded up by_______________...?

(A) Increasing the length of the rod
(B) Increasing the weight of the bob

(C) Reducing the length of the rod
(D) Reducing the weight of the bob

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Friction opposes motion between two bodies in contact because of ______...?

(A) Charges on bodies
(B) Weight of bodies

(C) Roughness of surfaces
(D) None of above

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Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________...?

(A) ionic substances
(B) metallic substances

(C) molecular solids
(D) covalent network solids

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A soldier drove eastward for 4 miles then drove North for 5 miles then turned to his left and drove for 1 mile and again turned to his left. Which choice gives the direction in which he was driving now....?

(A) South
(B) West

(C) North
(D) East

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Calcium sulphate is known as__________...?

(A) Epsom salt
(B) Gypsum salt

(C) Blue vitriol
(D) Potash alum

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The thermosphere extends from an altitude of ________ to the base of ________ at ________...?

(A) 75 km, Mesosphere, 670 km
(B) 80 km, Ionosphere, 680 km

(C) 85 km, Exosphere, 690 km
(D) 90 km, Ozone Layer , 690 km

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Which gas is used by the green plants to make their food...?

(A) O2
(B) CO2

(C) CO
(D) N2

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The energy currency of the cell is called...?

(A) ATP
(B) Fat

(C) LEAD
(D) None of These

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