Chemistry MCQs

Chemistry Objective (Multiple Choice) General Knowledge Questions & Answers for SSC-CGL, UPPSC, UPSC, NDA, CDS and UPSC Civil Services Prelims Examination.

1. Who among the following had given the Atomic Theory?
[A] Benzamin Franklin
[B] Madam curie
[C] Albert Einstien
[D] John Dalton

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2. Calcium Magnesium Silicate is commonly called as ________?
[A] Asbestos
[B] Borax
[C] Baking Soda
[D] Washing Soda

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3. Consider the following:

  1. Cinnabar is also known as mercurblende
  2. The color of Cinnabar varies from dull grey to bright green
  3. Cinnabar is the most common source ore for refining elemental mercury
  4. Cinnabar is the historic source for the brilliant blue pigment termed azure

Which of the statements given above are correct?

[A] Only 1 and 3
[B] Only 2 and 4
[C] 1, 3 and 4
[D] All Four

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4. Which set shows copper ores as Sulfide, Carbonate, Silicate respectively?
[A] Chalcopyrite, Azurite, Dioptase
[B] Azurite, Dioptase, Chalcopyrite
[C] Dioptase, Chalcopyrite, Azurite
[D] Dioptase, Azurite, Chalcopyrite

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5. Which among the following alkane has largely replaced the ozone layer-depleting halomethanes in household refrigerators and freezers?
[A] Methane
[B] Propane
[C] Butane
[D] Ethane

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6. Which among the following is correct statement about both rusting of iron and respiration?
[A] Both are exothermic reactions
[B] Both are endothermic reactions
[C] While Rusting is endothermic, respiration is exothermic
[D] While Rusting is exothermic, respiration is endothermic

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7. The largest component of Coal gas is__?
[A] Methane
[B] Hydrogen
[C] Carbon Dioxide
[D] Carbon Monoxide

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8. The adsorption of hydrogen by palladium is termed as:
[A] Physisorption
[B] Chemisorptions
[C] Physical adsorption
[D] Occlusion

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9. Which of the following element has the highest first ionization enthalpy?
[A] Magnesium
[B] Strontium
[C] Beryllium
[D] Barium

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10. Which among the following is most advantageous in storage in fuel cells used in small, portable electronics such as phones and laptop computers?
[A] Methanol
[B] Hydrogen
[C] Formic Acid
[D] Acetic Acid

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