IGCSE O Level Chemistry Practice Test 60

Exothermic Reactions Multiple Choice Questions (MCQ) PDF - 60

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The MCQ Quiz: Exothermic reactions take place when energy given out in making bonds is; "Exothermic Reactions" App APK Download (Free) with answers more than the energy taken in for breaking bonds, less than the energy taken in for breaking bonds, equal to the energy taken in for breaking bonds to learn online IGCSE GCSE courses. Study energy from chemicals questions and answers, Apple Book to download free sample for accredited online college courses.

Exothermic Reactions Questions and Answers PDF Download: Quiz 60

MCQ 296: Exothermic reactions take place when energy given out in making bonds is

A) less than the energy taken in for breaking bonds

B) more than the energy taken in for breaking bonds

C) equal to the energy taken in for breaking bonds

D) none of above

MCQ 297: While the Potassium Iodide (KI) is a powerful reducing agent, the

A) iodide ion is oxidized to iodine

B) iodide ion is reduced to iodine

C) iodine is reduced to iodide ion

D) iodine is oxidized to iodide ion

MCQ 298: In Sulfuric Acid (H₂SO₄), the chemical composition of sulfur is

A) 0.0204

B) 0.3265

C) 0.6531

D) 0.9821

MCQ 299: Soluble salt is

A) silver chloride AgCl

B) Lead Chloride PbCl₂

C) Sodium chloride NaCl

D) mercury chloride HgCl₂

MCQ 300: Hydrogen (H₂) is not

A) heavier than carbon dioxide

B) lighter than air

C) colored

D) insoluble

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