Chemistry MCQs:

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"Any fool can know. The point is to understand."

― Albert Einstein

Science-Chemistry-Multiple Choise Questions & Answers

প্রতিটি প্রশ্নের জন্য চারটি করে উত্তর থাকবে যার একটি সঠিক, বামদিকে A, B, C এবং D এর উপর ক্লিক করে সঠিক উত্তরটি দেখতে পারেন। যদি উত্তর সঠিক হয় তবে অপশনটির ডান দিকে টিক () আর উত্তর ভূল হলে ক্রস () চিনহ প্রদ্ররশিত হবে।

#: 31. Which of the following acids does not exhibit optical isomerism?

A.

Amino acid [R-CH(NH2)-COOH]

B.

Maleic acid (C4H4O4)

C.

Tartaric acid (C4H6O6)

D.

Lactic acid (C3H6O3)

#: 32. The molecular formula C8H10O may refer to_________.

A.

Methyl alcohol

B.

Propanol

C.

Ethanol

D.

Phenethyl alcohol

#: 33. Who discovered potassium and sodium?

A.

A.L. Lavoisier

B.

Morris Travers

C.

Sir Humphry Davy

D.

Joseph Priestley

#: 34. which of the following materials is the poorest thermal conductor?

A.

Glass

B.

Gas

C.

Water

D.

Plastic

#: 35. Which of the following is a matter?

A.

Sound

B.

Light

C.

Fire

D.

Heat

#: 36. Which of the following is the ancient name of Gold?

A.

Argentum (Ag)

B.

Aurum (Au)

C.

Hydragyrum (Hg)

D.

Plumbum (Pb)

#: 37. Smoke is an example of a/an__________.?

A.

element

B.

gaseous solution

C.

homogeneous mixture

D.

heterogeneous mixture

#: 38. Which one of the following is the monomer of polythene?

A.

Polystyrene [(C8H8)n]

B.

Vinyl chloride (C2H3)Cl

C.

Ethylene (C2H4)

D.

propylene (C3H6)

#: 39. The compound formed as a result of oxidation of ethyl benzene by KMnO4is_________.

A.

benzoic acid (C7H6O2)

B.

benzyl alcohol (C7H8O)

C.

benzophenone (C13H10O)

D.

biphenyl (C12H10)

#: 40. The mass of one Avogadro number of helium atom is_________.

A.

4.00 gram

B.

0.004 gram

C.

0.08 gram

D.

4 x 6.02 x 1023 gram

1 2 3 4 5 6 7 8 9

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