Physical and Chemical Changes
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Question 1 of 5
1. Question
Which of the following are correctly matched?
1. Dissolution —————————————— solute gets dissolved in a solvent.
2. Exothermic ————————————————————– heat in absorbed.
3. Reversible change ——————————————- reactants can be obtained.CorrectIncorrect -
Question 2 of 5
2. Question
Which of the following is/are correct for a physical change?
1. Only physical properties change.
2. Large amount of heat is absorbed or evolved.
Which of the above statements is/are correct?CorrectIncorrect -
Question 3 of 5
3. Question
Which of the following is not a chemical change?
CorrectIncorrect -
Question 4 of 5
4. Question
Rusting of iron can be prevented by:
1. Painting
2. Galvanisation
3. Electrolytic refining
4. Alloying
Which of the above are correct?CorrectIncorrect -
Question 5 of 5
5. Question
Which of the following is/are correct for crystallisation?
1. It is a physical change.
2. It is used to obtain pure substance.
Which of the above statements is/are correct?CorrectIncorrect