General Science Chemistry MCQs

Chemistry Objective (Multiple Choice) General Knowledge Questions & Answers for SSC-CGL, UPPSC, UPSC, NDA, CDS and UPSC Civil Services Prelims Examination. These questions are part of GKToday’s 35000+ MCQs Bank Course in GKToday Android App

41. Which of the following has least melting point?

[A] Carbon
[B] Silver
[C] Mercury
[D] Gold

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42. Bauxite is an alloy of which of the following metals?

[A] Aluminium
[B] Silver
[C] Tin
[D] Iron

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43. An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a:

[A] Power transmitter
[B] Battery
[C] Uninterrupted power supply (UPS)
[D] Generator

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44. What is the chemical formula for Sodium Chloride (Salt)?

[A] NaCl2
[B] NaCl
[C] Na2Cl
[D] Na2C

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45. Which of the following is slaked lime?

[A] Ca(OH)2
[B] CaO
[C] CaCO3
[D] CaCl2

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46. The Refrigerant ‘FREON’ is:

[A] Calcium Tetra Fluoride
[B] Difluoro Dichloro Methane
[C] Fluorspar and Felspar
[D] Hydrofluosilicic Acid

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47. Rectified spirit is:

[A] 95% ethyl alcohol
[B] 100% ethyl alcohol
[C] methylated spirit
[D] tincture of iodine

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48. What is the water found below water table called?

[A] Water cycle
[B] Water table
[C] Ground water
[D] Aquifer

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49. What is the major component of Gobar Gas?

[A] Propane
[B] Butane
[C] Methane
[D] Ethylene

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50. Chemistry of carbon compounds is known is:

[A] biochemistry
[B] physical chemistry
[C] inorganic chemistry
[D] organic chemistry

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