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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When water vapours are cooled, energy will be released and gaseous state will convert into liquid water. This process is known as...?

(A) Evaporation
(B) Condensation

(C) Melting
(D) Freezing

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Flame test of Copper Halide with bluish-green color identify the presence of ______...?

(A) Halogen
(B) Hydrogen

(C) Copper
(D) B and C

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A thick permeable layer around the plant cell is called...?

(A) Cell Wall
(B) Cytoplasm

(C) Cell Membrane
(D) None

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The periodic table divided into S, P, d, and f block based on _______...?

(A) Atomic Radius
(B) Electronic Configuration

(C) Ionization Energy
(D) Electron Affinity

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What is the effect of height increase over temperature...?

(A) Temperature increase
(B) Temperature decrease

(C) Remains constant
(D) None

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Study of culture is called...?

(A) Odology
(B) Anthropology

(C) Ornithology
(D) Psychology

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The element used in lead pencils is__________...?

(A) Zinc
(B) Lead

(C) Carbon
(D) Tin

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10^-3 second is called as _____...?

(A) Millisecond
(B) Microsecond

(C) Nanosecond
(D) Picosecond

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Uncertainty Principle was given by...?

(A) Werner Heisenberg
(B) Farady

(C) John locke
(D) None of these

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