In which of the following, the speed of sound is minimum...? Mcqs

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In which of the following, the speed of sound is minimum...?

(A) Brick
(B) Air

(C) Lead
(D) Copper

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It is possible to recognize a person in the dark by simply hearing his unique voice . It is because of the_______...?

(A) pitch
(B) Frequency

(C) Time period
(D) Quality

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An average human heart beats about time in a minute...?

(A) 72 times
(B) 85 times

(C) 90 times
(D) 120 times

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The speed of sound in aluminium is _____...?

(A) 5620 m/s
(B) 6420 m/s

(C) 7220 m/s
(D) 4820 m/s

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Short-sightedness defect can be corrected by wearing a _____...?

(A) Convex Lens
(B) Concave Lens

(C) Prism Lens
(D) Cylindrical Lens

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Apiculture refers to___________...?

(A) Rearing silk worms
(B) Science of bee keeping

(C) Science of gardening
(D) Science of cultural norms and trends

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The process of separating a soluble solid from a solution is known as...?

(A) Distillation
(B) Filtration

(C) Sublimation
(D) Crystallization

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The term xerostomia refers to_________...?

(A) dry skin
(B) dry mouth

(C) dry nose
(D) dry head

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The hormone ADH release from ______...?

(A) Pituitary gland
(B) Kidneys

(C) Liver
(D) Lungs

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Mercury is the closest planet to the Sun, but Venus is hotter than Mercury because of its_________...?

(A) Pressure
(B) axis

(C) atmosphere
(D) surface

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