CHEMISTRY MCQ

 

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

CHEMISTRY   MCQ  :- 

1.Which among the following qualities of iron ore is best based upon iron content?

[A] Magnetite

[B] Hematite

[C] Limonite

[D] Siderite

2.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 DyeChemistry-themed clothingChemistry online courses

3.2,4-D, which is sold as a weed killer of the broad-leaved weeds is a synthetic version of __:

[A] Auxin Hormone

[B] Cytokinin Hormone

[C] Xylitol

[D] None of them

4.Which gas is produced when an alkali metal, like Lithium or Sodium, reacts with water?

[A] Oxygen

[B] Hydrogen

[C] Ozone

[D] Carbon Dioxide

5.If a baby diaper is subjected to different solutions, which of the following will it absorb the maximum quantity of?

[A] Distilled Water

[B] Drinking Water

[C] Hard Water

[D] Urine

Also read : PHYSICS MCQ https://www.knowlege.in/2025/03/physics-mcq.html

6.PAN (Peroxyacetyl nitrate) is a secondary gaseous compound found in _?

[A] Classical smog

[B] Volatile organic compound

[C] Photochemical smog

[D] Green manure

7.Which of the following radical is also known as the “atmospheric detergent” ?

[A] Chlorine radical

[B] Hydroxyl radical

[C] Methyl radical

[D] Ozone radical

8.Which of the following element has the highest first ionization enthalpy?

[A] Magnesium

[B] Strontium

[C] Beryllium

[D] Barium

Also read : PHYSICS MCQ Part - 2 https://www.knowlege.in/2025/03/physics-mcq_25.html

9.Which of the following is correct about Ammonia?

[A] The ammonia molecule is trigonal pyramidal in shape

[B] Ammonia gas is light blue in colour

[C] its aqueous solution is highly basic

[D] Ammonia gas is odorless

10.Which of the following is NOT correct about Ethanol?

[A] It is a good solvent

[B] It gives out hydrogen when reacted with Sodium

[C] It is an odorless liquid

[D] All are correct