Thermochemistry — Part 2 MCQs with Explanations

H2 - O2 fuel cell is the correct answer to “The source of electrical energy on the Apollo Moon flights was”. This question is standard in competitive examination syllabi for Thermochemistry.

super cooling is the correct answer to “When ammonium chloride is dissolved in water, the solution becomes cold. The change is”. This question is standard in competitive examination syllabi for Thermochemistry.

Nickel and cadmium is the correct answer to “Which one of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torchlights, electric shavers etc”. This question is standard in competitive examination syllabi for Thermochemistry.

Exothermic process is the correct answer to “Among the following respiration is which type of process”. This question is standard in competitive examination syllabi for Thermochemistry.

the enthalpy increases is the correct answer to “During the evaporation of a liquid”. This question is standard in competitive examination syllabi for Thermochemistry.

made cathode and a pure nickel red, the anode is the correct answer to “When a spoon is to be electroplated with nickel the spoon is”. This question is standard in competitive examination syllabi for Thermochemistry.

to avoid polarisation effect is the correct answer to “A conductivity cell is platinised”. This question is standard in competitive examination syllabi for Thermochemistry.

Tin is the correct answer to “Which one among the following metals is more reactive than hydrogen”. This question is standard in competitive examination syllabi for Thermochemistry.

zinc is the correct answer to “Galvanised iron sheets are protected fromrusting due to presence of a layer of”. This question is standard in competitive examination syllabi for Thermochemistry.

aluminium oxide is the correct answer to “Aluminium surfaces are of ten 'anodised'. This means the deposition of a layer of”. This question is standard in competitive examination syllabi for Thermochemistry.

room will be heated is the correct answer to “If a refrigerator's door is kept open, then”. This question is standard in competitive examination syllabi for Thermochemistry.

gold has higher standard reduction potential than iron is the correct answer to “A smuggler could not carry gold by depositing iron on the gold surface, because”. This question is standard in competitive examination syllabi for Thermochemistry.

Reaction in which heat is absorbed is the correct answer to “What is an endothermic reaction”. This question is standard in competitive examination syllabi for Thermochemistry.

All options are correct is the correct answer to “Which of the following reaction is an example of exothermic reaction”. This question is standard in competitive examination syllabi for Thermochemistry.

increasing the emf of the cell is the correct answer to “The depolarisation in a primary cells is used for the purpose of”. This question is standard in competitive examination syllabi for Thermochemistry.

voltage of cell increases is the correct answer to “When an acid cell is charged, then”. This question is standard in competitive examination syllabi for Thermochemistry.

zinc plating is the correct answer to “To protect iron against corrosion, the durable metal plating on it, is”. This question is standard in competitive examination syllabi for Thermochemistry.

1, 2 and 3 is the correct answer to “Consider the following statements. The electrochemical series helps 1. in extraction of metals. 2. in protecting themetal fromcorrosion. 3. in comparing the reactivity of metals. Which of the above is/are true”. This question is standard in competitive examination syllabi for Thermochemistry.

1, 2, 3 and 4 is the correct answer to “Which of the following statements about the commonly used automobile battery are true? 1. It is usually a lead-acid battery. 2. It has six cells with a potential of 2V each. 3. Its cells work as galvanic cells while discharging power. 4. It cells work as electrolytic cells while recharging. Select the correct answer:”. This question is standard in competitive examination syllabi for Thermochemistry.

reduction occurs at the cathode is the correct answer to “In an electrochemical cell that functions as a voltaic cell”. This question is standard in competitive examination syllabi for Thermochemistry.

the movement of ions of electrolyte is the correct answer to “The conduction of electricity through the electrolyte solution is due to”. This question is standard in competitive examination syllabi for Thermochemistry.

hydrolysis is the correct answer to “In an experiment, salt of Sodium Carbonate (Na 2 CO 3 ) is dissolved in Water (H 2 O), then NaOH and a carbonic acid is formed. This experment is an example of”. This question is standard in competitive examination syllabi for Thermochemistry.