The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ________...? Mcqs

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The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ________...?

(A) 1120 ft
(B) 120 ft

(C) 56 ft
(D) 100 ft

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The rod cells of retina are responsible for vision in...?

(A) Bright Light
(B) Dim light

(C) Summary atmosphere
(D) Shiny atmosphere

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A point directly below the sesmic focus is...?

(A) Cleft
(B) Epicentre

(C) Incentre
(D) Orthocentre

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What is RDX ...?

(A) An instrument
(B) A gene

(C) An explosive
(D) Cyanohydrin

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Opening and closing of stomata is also regulated by ___...?

(A) Epidermal cells
(B) Guard cells

(C) Root hair cells
(D) Mesophyll cells

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Which one of the following incorrectly shows the types of vertebrates through its examples...?

(A) Reptile → Snake
(B) Bird → Ostrich

(C) Amphibian → Toad
(D) Mammal → Shark

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The process in which fusion of male and female cells occur to develop a new plant is called...?

(A) Fertilization
(B) Pollination

(C) Reproduction
(D) Germination

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A body of land that is surrounded by water on three sides is called________...?

(A) Strait
(B) Bay

(C) Peninsula
(D) Gulf

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How many coloumns in the modern Periodic Table...?

(A) 17
(B) 18

(C) 19
(D) None of these.

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How many layers does sun have ...?

(A) 6
(B) 4

(C) 7
(D) 3

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