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Chemistry

Practice the latest Chemistry MCQs with answers and explanations to prepare for exams and job tests. Our collection covers key topics such as atomic structure, periodic table, chemical bonding, organic chemistry, inorganic chemistry, physical chemistry, and environmental chemistry. These Chemistry multiple-choice questions are designed for students, competitive exam aspirants, and professionals appearing in NTS, PPSC, FPSC, CSS, PMS, university entry tests, and medical admission tests. Improve your concepts and problem-solving skills with our updated and comprehensive Chemistry MCQs online.

📘 Alcohols Phenols and Ethers MCQs
📘 Aldehydes and Ketones MCQs
📘 Aliphatic Hydrocarbons MCQs
📘 Alkyl Halides MCQs
📘 Aromatic Hydrocarbons MCQs
📘 Atomic Structure MCQs
📘 Basic Concept MCQs
📘 Carboxylic Acids MCQs
📘 Chemical Bonding MCQs
📘 Chemical Equilibrium MCQs
📘 Chemical Kinetics MCQs
📘 Chemistry Diagnostic Test MCQs
📘 Common Chemical Industries MCQs
📘 Electrochemistry MCQs
📘 Environmental Chemistry MCQs
📘 Experimental Techniques MCQs
📘 Gases MCQs
📘 Group 3A and 4A Elements MCQs
📘 Group 5A and 6A Elements MCQs
📘 Liquids and Solids MCQs
📘 Macromolecules MCQs
📘 Organic Chemistry MCQs
📘 Periodic Classification Of Elements MCQs
📘 S-Block Elements MCQs
📘 Solutions MCQs
📘 The Halogens and The Noble Gases MCQs
📘 ThermoChemistry MCQs
📘 Transition Elements MCQs

181. When two or more different substituents are attached with a benzene ring the number 1 position in the ring is given to a high priority group. Which one of the following groups has the highest – priority?

September 17, 2025 by Admin
A. #REF!
B. -CHO
C. -COOH
D. -CN
✅ The correct answer is option C.
Categories Aromatic Hydrocarbons MCQs, Chemistry Tags Aromatic Hydrocarbons MCQs, Chemistry MCQs Leave a comment

182. Which alkyl halide has the highest reactivity for a particular alkyl group?

September 17, 2025 by Admin
A. R-F
B. R-Cl
C. R-Br
D. R-I
✅ The correct answer is option D.
Categories Alkyl Halides MCQs, Chemistry Tags Alkyl Halides MCQs, Chemistry MCQs Leave a comment

183. Compounds attracted by applied strong magnetic field are called

September 17, 2025 by Admin
A. Diamagnetic
B. Paramagnetic
C. Good conductor
D. Ferromagnetic
✅ The correct answer is option B.
Categories Chemistry, Transition Elements MCQs Tags Chemistry MCQs, Transition Elements MCQs Leave a comment

184. When benzene is substituted by halogens only which one of the following halogens only which one of the following halogens is given the number one position in the ring while writing the name of the compound?

September 17, 2025 by Admin
A. Bromine
B. Chlorine
C. Fluorine
D. Iodine
✅ The correct answer is option D.
Categories Aromatic Hydrocarbons MCQs, Chemistry Tags Aromatic Hydrocarbons MCQs, Chemistry MCQs Leave a comment

185. Ethyl chloride with nascent hydrogen produces

September 17, 2025 by Admin
A. Methane
B. Ethane
C. Propane
D. Butane
✅ The correct answer is option B.
Categories Alkyl Halides MCQs, Chemistry Tags Alkyl Halides MCQs, Chemistry MCQs Leave a comment

186. The correct electronic configuration of Cr is

September 17, 2025 by Admin
A. [Ar]4s23d4
B. [Ar] 4s23d4
C. [Ar]4s03d5
D. [Ar]4s13d5
✅ The correct answer is option D.
Categories Chemistry, Transition Elements MCQs Tags Chemistry MCQs, Transition Elements MCQs Leave a comment

187. Which one of the following is not a meta directing group?

September 17, 2025 by Admin
A. -CN
B. -OH
C. -COOH
D. -CHO
✅ The correct answer is option B.
Categories Aromatic Hydrocarbons MCQs, Chemistry Tags Aromatic Hydrocarbons MCQs, Chemistry MCQs Leave a comment

188. Which one is not a nucleophile?

September 17, 2025 by Admin
A. C2H5O-
B. SCN-
C. NH3
D. H3C+
✅ The correct answer is option D.
Categories Alkyl Halides MCQs, Chemistry Tags Alkyl Halides MCQs, Chemistry MCQs Leave a comment

189. Which pair of groups contains both ortho & para directing groups

September 17, 2025 by Admin
A. OH -RCO
B. NR3 -CN
C. OCH3 -CHO
D. N (CH3)2 -NH2
✅ The correct answer is option D.
Categories Aromatic Hydrocarbons MCQs, Chemistry Tags Aromatic Hydrocarbons MCQs, Chemistry MCQs Leave a comment

190. The number of molecules taking part in the rate determining step is called

September 17, 2025 by Admin
A. Order of reaction
B. Rate of reaction
C. The mole of a reaction
D. The extent of a reaction
✅ The correct answer is option A.
Categories Alkyl Halides MCQs, Chemistry Tags Alkyl Halides MCQs, Chemistry MCQs Leave a comment
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