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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Diameter of Sun is_____________...?

(A) 12 Lakh kms
(B) 13 Lakh kms

(C) 14 Lakh kms
(D) 15 Lakh kms

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Basidiospores are considered to be a major source of ___________...?

(A) airborne allergens
(B) water borne allergens

(C) animal faeces
(D) bio-weapon

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Elements are made of _________...?

(A) Atoms
(B) Molecules

(C) H2O
(D) Compounds

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Solar panels contain Solar Cell which are called ____...?

(A) Photo-voltaic cells
(B) photo - electric cells

(C) photo- septic cell
(D) None

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An atom is neutral but when an atom or molecule that carries net electric due to gain or loss of an electron is called an...?

(A) Ion
(B) Molecule

(C) Anion
(D) Cation

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Which of the following is not the source of carbon dioxide emission...?

(A) Burning of fossil fuels, wood, cool
(B) Solar power

(C) Respiration
(D) Car exhaust smoke

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In a concave mirror, the image size depends upon _____...?

(A) Size of the object
(B) Area covered by the object

(C) Position of the object
(D) The shape of the object

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CT Scan stand for__________...?

(A) Computed Tomography Scan
(B) Computer Topography Scan

(C) Computed Topography Scan
(D) Computer Tomography Scan

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Reptiles hibernate during_______...?

(A) Summer
(B) Winter

(C) Spring
(D) Autumn

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