Chemistry MCQs

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

1. Which among the following is the objective of the Methyl tert-butyl ether (MTBE) mixing with Petroleum? 
[A] Raise Octane Number
[B] Antioxidant Stabilizer
[C] Lead Scavanger
[D] Fuel Dye

Show Answer

2. Calamine is an ore of which among the following?
[A] Zinc
[B] Copper
[C] Mercury
[D] Iron

Show Answer

3. Which gas is produced when an alkali metal, like Lithium or Sodium, reacts with water?
[A] Oxygen
[B] Hydrogen
[C] Ozone
[D] Carbon Dioxide

Show Answer

4. Hard Water contains which of the following ?
[A] Aluminum
[B] Chlorine
[C] Calcium
[D] Zinc

Show Answer

5. Which among the following gas has lowest auto-ignition temperature?
[A] Methane
[B] Hydrogen
[C] Ethylene
[D] Carbon Di Sulphide

Show Answer

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

Show Answer

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

Show Answer

8. Which of the following are the uses of Calcium carbonate?
[A] as an antacid
[B] mild abrasive in tooth paste
[C] as a filler in cosmetics
[D] All of the above

Show Answer

9. Which of these compounds is also known as wood spirit?
[A] Ethanol
[B] Methanol
[C] Propanol
[D] None of the above

Show Answer

10. Which of the following metal is the main constituent in Pewter alloy?
[A] Lead
[B] Zinc
[C] Tin
[D] Iron

Show Answer