Which mineral is the present in meats, eggs, table salt, fruits and vegetables...? Mcqs

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Which mineral is the present in meats, eggs, table salt, fruits and vegetables...?

(A) Sodium
(B) Iodine

(C) Calcium
(D) Magnesium

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When the ray of lights strikes on the brick wall, it is...?

(A) Passed through it
(B) Scattered by it

(C) Reflected by it
(D) None

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In a normal human body, the total number of red blood cells is ________...?

(A) 15 trillion
(B) 20 trillion

(C) 25 trillion
(D) 30 trillion

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How dark matter is detected...?

(A) Dark matter is detected through its absorption effects
(B) Dark matter is detected through its gravitational effects on visible matter

(C) Dark matter is detected through its absorption and gravitational effects
(D) Dark matter cannot be detected

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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

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Which one of the following is not a disadvantage of friction...?

(A) Energy loss
(B) Fasteners

(C) Wear and Tear
(D) Speed limit

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The inert gas which is substituted for nitrogen in the air used by deep sea divers for breathing, is ________ ...?

(A) Argon
(B) Xenon

(C) Helium
(D) Krypton

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Cusec is a unit of _________...?

(A) Area
(B) Time

(C) Distance
(D) mass

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Which of the following layers make radio transmission possible...?

(A) Troposphere
(B) Ionosphere

(C) Mesosphere
(D) Stratosphere

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The particles of a liquid...?

(A) Are tightly packed and stay in a fixed position
(B) Are free to move in a container but remain in close contact with one another

(C) Are widely spaced and move freely in any direction
(D) Are sparse and vibrate at long distances

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