Which is the best indication that a chemical reaction has taken place...? Mcqs

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Which is the best indication that a chemical reaction has taken place...?

(A) Blue powder turns water blue
(B) Metal budding when placed in an unknown liquid

(C) A white substance dissolving in water
(D) None

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Unit of specific gravity is...?

(A) Pascal
(B) No unit

(C) Mass/volume
(D) None of these

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Which formula helps in the determination of the maximum number of electrons present in an orbit...?

(A) 2n^2
(B) 2n

(C) n^2
(D) n/2

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Bronze medal is made up of metals ...?

(A) copper,nickel
(B) copper, tin

(C) copper, silver
(D) copper, zinc

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Only object of earth can be seen from Moon What it is...?

(A) Hanging Garden
(B) Light House

(C) Wall of China
(D) A Squire

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Which of the following vitamin is known as Pyridoxine...?

(A) Vitamin B-1
(B) Vitamin B-2

(C) Vitamin B-6
(D) Vitamin B-12

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The neutral atoms of all of the isotopes of the same element have _______...?

(A) Different numbers of protons
(B) Exact numbers of neutrons

(C) An exact number of protons
(D) An exact number of nucleons

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The part of brain involved in balance and precision in movements is: __________...?

(A) Cerebrum
(B) Cerebellum

(C) Thalamus
(D) Medulla oblongata

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Sequence of changes which occurs between one cell division and the next is called...?

(A) Mitosis
(B) Meiosis

(C) Half cycle
(D) Cell cycle

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Which of the following animal has blue blood...?

(A) Snail
(B) Octopus

(C) Spider
(D) All of above

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