A ______ is an inclined plane wrapped around a cylinder, used to fasten objects....? Mcqs

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A ______ is an inclined plane wrapped around a cylinder, used to fasten objects....?

(A) Screw
(B) Lever

(C) Pulley
(D) Wheel

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The main constituent of hemoglobin is___________...?

(A) Chlorine
(B) Iron

(C) Calcium
(D) None of these

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Amount of pressure of liquid increases with increase of _____...?

(A) Depth
(B) Volume

(C) Temperature
(D) Surface tension

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How much percentage (%) of the Earth's Surface is covered with water...?

(A) 70%
(B) 60%

(C) 90%
(D) 75%

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What is the process of artificial rain...?

(A) Cloud baring
(B) Cloud seeding

(C) Both A and B
(D) None

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The instrument which i specially design for recording earth quake wave is called seismograph which measure earth quake waves on a ____________...?

(A) Diatonic scale
(B) Fahrenheit Scale

(C) Richter scale
(D) Celsius Scale

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speed of sound in dry air at 20 °C is___________...?

(A) 353 m/s
(B) 345 m/s

(C) 343 m/s
(D) none of them

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If a gas is heated in a sealed cylinder, then _______ increases....?

(A) Pressure inside the container
(B) Average kinetic energy of the particles

(C) Temperature of the gas
(D) All of them

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To view dim stars, we use ______...?

(A) Compound microscope
(B) Endoscope

(C) Telescope
(D) Simple microscope

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Foundation of life based on _____...?

(A) Physical foundation
(B) Biological foundation

(C) Environmental foundation
(D) Chemical foundation

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