O Level Chemistry Practice Test 149

Endothermic Reactions MCQ Questions PDF Download - 149

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The MCQ: Endothermic reactions take place when PDF, "Endothermic Reactions" App Android & iOS (Free) with energy given out in making bonds is more than the energy taken in for breaking bonds, energy given out in making bonds is less than the energy taken in for breaking bonds, energy given out in making bonds is equal to the energy taken in for breaking bonds, and none of above choices for schools that offer online degrees. Practice energy from chemicals questions and answers, Google eBook to download free sample for ACT subject test tutoring.

Chemistry: Endothermic Reactions MCQ Quiz PDF Download

MCQ: Endothermic reactions take place when

A) energy given out in making bonds is less than the energy taken in for breaking bonds

B) energy given out in making bonds is more than the energy taken in for breaking bonds

C) energy given out in making bonds is equal to the energy taken in for breaking bonds

D) none of above

MCQ: Paraffin is an example of

A) strong electrolyte

B) non-electrolyte

C) weak electrolyte

D) catalyst

MCQ: The chemical formula of aluminum nitrate is

A) AlNi₃

B) Al₃Ni₂

C) Al(NO₂)₃

D) Al(NO₃)₃

MCQ: In the electrolysis of aqueous solutions of dilute acids or dilute alkalis, the amount of hydrogen given off is roughly

A) half of the oxygen given off at the anode

B) same as of oxygen given off at anode

C) twice the oxygen given off at anode

D) twice the oxygen given off at cathode

MCQ: Mass of an element in a compound can be calculated through

A) Ar of the atoms/Mr of the compound

B) Mr of the atoms/Ar of the compound

C) (Ar of the atoms/Mr of the compound) × mass of sample

D) (Ar of the atoms/Mr of the compound) × mass of sample

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