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Chemistry MCQ Questions with answers

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Learn Chemistry MCQs [Page 1 of Department 12]

1) ATP stands for

(A) Adenosine triphosphate
(B) Alanine triphosphate
(C) Adrenalin triphosphate
(D) Asparagine triphosphate
Correct Answer - Option (A)

Explanation:
Adenosine triphosphate (ATP) is a nucleotide which is also called as nucleoside triphosphate is a small molecule used in cells as a coenzyme. It is often referred to as the "molecular unit of currency" of intracellular energy transfer. ATP transports chemical energy within cells for metabolism. Most of the cellular functions need energy in order to be carried out such as synthesis of proteins, synthesis of membranes, movement of the cell, cellular division, transport of various solutes etc. The ATP is the molecule that carries energy to the place where the energy is needed. When ATP breaks into ADP (adenosine diphosphate) and Pi (phosphate), the breakdown of the last covalent link of phosphate liberates energy that is used in reactions where it is needed.

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2) Which one of the following is highly exothermic?

(A) Dissolving copper sulphate in water
(B) Dissolving bleaching powder in water
(C) Dissolving washing soda in water
(D) Dissolving sulphuric acid in water
Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

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3) Which of the following processes is used to remove reducible oxides from the metal?

(A) liquation
(B) cupellation
(C) poling
(D) electro refining
Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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5) Of the following elements, which one has the same oxidation  state in all of its compounds?

(A) Hydrogen
(B) Fluroine
(C) Carbon
(D) Oxygen
Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

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7) Which among the following is used to dilute oxygen in the gas cylinders used by divers ?

(A) Krypton
(B) Argon
(C) Helium
(D) Neon
Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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9) Which among the following elements is found in maximum percentage in the human body ?

(A) Carbon
(B) Hydrogen
(C) Nitrozen
(D) Oxygen
Correct Answer - Option (D)

Explanation:
Oxygen is found in maximum percentage in the human body.

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10) Iodine can be separated from a mixture of Iodine and Potassium Chloride by

(A) Sedimentation
(B) Filtration
(C) Sublimation
(D) Distillation
Correct Answer - Option (C)

No Explanation found. Add Explanation and get +2 points.

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