The speed of sound in air at sea level is approximately____________...? Mcqs

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The speed of sound in air at sea level is approximately____________...?

(A) 300 meter per second
(B) 320 meter per second

(C) 340 meters per second
(D) 370 meter per second

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Enzymes are organic catalysts made up of ...?

(A) Carbohydrates
(B) Proteins

(C) Nucleic Acid
(D) Fats

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Mohus scale is used for to measure ____________...?

(A) Hardness
(B) Humidity

(C) Pressure
(D) Temperature

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Which of these is not a Metamorphic rock...?

(A) Quartzite
(B) Slate

(C) Gneiss
(D) Schist

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Atomic mass of an element is equal to ______...?

(A) Mass of protons and neutrons
(B) Mass of protons and electrons

(C) Mass of electrons and neutrons
(D) Mass of protons only

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How many number of milk teeth are in the human body...?

(A) 16
(B) 12

(C) 22
(D) 20

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Which of the following vitamin is known as Pyridoxine...?

(A) Vitamin B-1
(B) Vitamin B-2

(C) Vitamin B-6
(D) Vitamin B-12

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A convex mirror always ___________ ...?

(A) Forms a real image
(B) Forms a virtual image

(C) Forms an inverted image
(D) Produces a larger image

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If the level of atmospheric pollution increases:...?

(A) The length of the day will increases
(B) The length of the day will decreases

(C) The length of the day will remain same
(D) None of these

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The audible range of normal bat ear is ______...?

(A) 20 Hz to 120 kHz
(B) 20 Hz to 20 kHz

(C) 20 kHz to 110 kHz
(D) 20 Hz to 50 KHz

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