Chemical reaction and equation MCQ class 10 chapter-1 are given for practice . Some practice Test are to gain good score in exams
Chemical reaction and Equation MCQ-1
Q.In which of the following, a chemical reaction has take place?
a) Ice melt in to water
b) A wet shirt got dried in sunlight
c) A brown layer is formed on iron rod kept in air
Show Answer
Ans-A brown layer is formed on iron rod kept in air
Q. Which of the following condition help to us to determine that a chemical reaction has taken place?
a) Evolution of gas
b) Formation of precipitate
c) Change in colour
Q. Magnesium ribbon is rubbed before burning because it has a coating of –
a) Magnesium oxide
b) Magnesium carbonate
C) Magnesium sulphate
Q.If magnesium is gently heated, it forms-
a) Magnesium oxide
b)Magnesium carbonate
c) Magnesium sulphate
Show Answer
Ans- magnesium oxide
Q.Reaction of magnesium with air is –
a) Exothermic
b) Endothermic
c) Reversible
Show Answer
Ans- exothermic
Q.Reaction of magnesium with air is –
a) Exothermic
b) Endothermic
c) Reversible
Show Answer
Ans- exothermic
ChemistryPapers.com
