Ruby is an oxide of__________...? Mcqs

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Ruby is an oxide of__________...?

(A) silver
(B) gold

(C) platinum
(D) aluminium oxide

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Chromosomes in the cell which are similar to each other in shape and size are called...?

(A) Homologous pair
(B) Heterologous pair

(C) Sister chromatids
(D) Non-homologous pair

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In a railway track, two rails are joined end to end with a gap tin between them because...?

(A) Steel can be saved
(B) Accidents due to contraction in winter can be avoided

(C) Air gaps are necessary for bearing the weight of running train
(D) Accidents due to expansion in summer can be avoided

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_________ is the atmospheric layer that absorbs most of the ultraviolet radiation that Earth receives from the Sun....?

(A) Troposphere
(B) Stratosphere

(C) Mesosphere
(D) Ionosphere

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Crude Oil is heated in the furnace up to _________...?

(A) 300°C
(B) 350°C

(C) 400°C
(D) 450°C

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Plants are divided into how many main groups...?

(A) 3
(B) 4

(C) 2
(D) 1

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Which natural element has the highest melting point...?

(A) Iron
(B) Tungsten

(C) Copper
(D) Silver

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A single compound breaks down to form two or more simpler substances are called...?

(A) Combination Reaction
(B) Decomposition Reaction

(C) Neutralization Reaction
(D) Addition Reaction

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For about how many hours food remains in small intestine...?

(A) 2 to 6 hours
(B) 12 to 25 hours

(C) 7 to 11 hours
(D) 24 to 48 hours

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Arthritis is a disease of ...?

(A) Lungs
(B) Blood

(C) Disorder of the Joints
(D) Liver

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