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

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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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Stage of mitosis in which chromatids reach the poles and their movement ceases...?

(A) Prophase
(B) Metaphase

(C) Anaphase
(D) Telophase

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The image formed in a compound microscope is_____________...?

(A) erect
(B) inverted

(C) sometimes erect, sometimes inverted
(D) none

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Pneumatic systems is (are) used in ______...?

(A) Spray guns
(B) Pumps

(C) Vacuum cleaner
(D) Dental drill or dentistry tools

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According to which law gas is directly proportional to temperature...?

(A) Charles Law
(B) Boyles Law

(C) Grams Law
(D) Dalton’s Law

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Halley’s Comet is the only known short-period comet that is consistently visible to the naked eye from Earth, appearing every 72–80 years. It last appeared in the inner parts of the Solar System in 1986 and will next appear in mid-_________...?

(A) 2065
(B) 2061

(C) 2040
(D) None of These

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Selective reabsorption in nephron takes place at ______...?

(A) Glomerulus
(B) Malpighian body

(C) Convulated tubules
(D) Loop of Henle's

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Which one metal belongs to Alkaline earth metal...?

(A) B
(B) Bi

(C) Br
(D) Ba

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The number of electrons of a neutral atom is automatically known if one knows the...?

(A) Atomic number
(B) Atomic weight

(C) Number of orbitals
(D) none

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

(A) 16 Hz to 20kHz
(B) 10 Hz to 31kHz

(C) 67 Hz to 45kHz
(D) 20 Hz to 20kHz

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