The two factors that affect the speed of sound in air are ______...? Mcqs

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The two factors that affect the speed of sound in air are ______...?

(A) Humidity and volume of the air
(B) Temperature and mass of the air

(C) Volume and mass of the air
(D) Temperature and humidity of the air

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Stage of meiosis in which centromeres shorten and the paired chromatids are pulled away from one another...?

(A) Anaphase-II
(B) Metaphase-II

(C) Telophase-II
(D) Prophase-II

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The Empirical formula of hydrogen peroxide is _______...?

(A) H2O2
(B) HO

(C) OH
(D) O2H2

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Barnacles growing on the back of whale is an example for ________________...?

(A) mutualism
(B) parasitism

(C) amensalism
(D) commensalism

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The ‘Solar Corona’ mainly consists of...?

(A) Gases
(B) Ice

(C) Molten lava
(D) Cosmic rays

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Which mineral plays an important role in the distribution of water in the body...?

(A) Calcium
(B) Magnesium

(C) Iodine
(D) Sodium

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Which of the following have sharp melting point in solids...?

(A) Plastic
(B) Rubber

(C) Glass
(D) Diamond

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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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Atmospheric pressure decrease rapidly with altitude because the air becomes_______ ...?

(A) Colder
(B) Less denser

(C) Rich in Ozone
(D) Warmer

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Medium which sends signal from source to destination is known as ________ ...?

(A) Transmitter
(B) Transmission channel

(C) Receiver
(D) Hardware

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