Chemistry MCQs

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

1. When Sulphur is heated with rubber, the process is commonly known as ?
[A] Galvanization
[B] Sulphonation
[C] Vulcanization
[D] Hydrodesulfurization

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2. Which among the following groups is characteristic to alcohols?
[A] OH group
[B] COOH group
[C] COO group
[D] CO group

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3. Which among the following is correct regarding the alkaline battery ?
[A] Negative terminal made of Zinc Powder and Positive terminal made of Manganese dioxide & electrolyte is KOH
[B] Negative terminal made of Manganese dioxide and Positive terminal made of Zinc powder & electrolyte KOH
[C] Negative terminal made of Zinc Powder and Positive terminal made of Manganese dioxide & Electrolyte is Ammonium Chloride
[D] Negative terminal made of Manganese dioxide and Positive terminal made of Zinc powder & electrolyte Ammonium Chloride

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4. What is Zeeman effect?
[A] splitting of spectral line in presence of magnetic field
[B] splitting of spectral line in presence of electric field
[C] convergence of spectral line in presence of magnetic field
[D] convergence of spectral line in presence of electric field

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5. Which of the following equation represents combination of Hydrogen gas with nitrogen to form ammonia?
[A] 2H2 + N –> NH3
[B] 2H + N3 –> NH3
[C] 3H2 + N2 –> 2NH3
[D] None of the above

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6. What do we call the reaction when an acid and a base react together to form salt and water?
[A] Reduction Reaction
[B] Oxidation Reaction
[C] Neutralisation Reaction
[D] Combination Reaction

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7. What do we call the covalent bond where the electrons of the shared pair are contributed by only one species?
[A] Polar Covalent bonds
[B] Coordination Covalent bonds
[C] Unilateral Covalent bonds
[D] None of the above

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8. What do we call the device which converts the chemical energy of a spontaneous redox reaction into electrical energy?
[A] Galvanic cell
[B] Fuel cell
[C] Electrolytic cell
[D] None of the above

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9. What is the effect of increase in concentration on the Molar conductivity?
[A] It increases
[B] It decreases
[C] It remains constant
[D] None of the above

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10. What do we call the molar conductivity when the concentration approaches zero?
[A] Reacting molar conductivity
[B] Zero level molar conductivity
[C] Limiting molar conductivity
[D] Ideal molar conductivity

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