Water is a highly effective coolant for a car engine because _________...? Mcqs

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Water is a highly effective coolant for a car engine because _________...?

(A) Water is good conductor of heat
(B) Water has very high specific heat capacity

(C) Water boils at a comparatively high temperature
(D) Evaporation of water produces lot of cooling

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How many moons does Saturn have...?

(A) 7
(B) 13

(C) 79
(D) 82

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Velocity of sound in air does not change with the change of...?

(A) Temperature of air
(B) Pressure of air

(C) Moisture content in air
(D) Wind in the direction of propagation of sound

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Which of the following statements is incorrect about Cycas...?

(A) Cycas plants are gymnosperms.
(B) Cycas leaves are pinnately compound.

(C) Cycas have vessel elements in their xylem.
(D) Cycas produce seeds but do not form flowers.

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The condition when the resistance of a circuit is zero is known as...?

(A) Closed-circuit
(B) Short circuit

(C) Open circuit
(D) Zero circuit

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The coolest stars are the red stars and their temperature is around ____...?

(A) 2000°C
(B) 3000°C

(C) 4000°C
(D) 5000°C

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The lens used in a simple microscope is____________...?

(A) Concave
(B) Convex

(C) Cylindrical
(D) None

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Drugs for treatment of rheumatoid arthritis can be obtained from ______...?

(A) Animals
(B) Minerals

(C) Plants
(D) Micro organisms

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Speed of sound in air is _______km/h...?

(A) 1347
(B) 243

(C) 1235
(D) 1495

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A train goes past a railway station at a high speed. A young boy standing on the edge of the platform is likely to __________...?

(A) Remain unaffected
(B) Fall away from the train

(C) Fall towards the train
(D) Fall away from or towards the train depending upon the speed

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