| | - Teacher Name : Rakesh
- Total Questions : 15
- Time Allowed : 60
- Total Marks : 15
Q 1 :Which of the following is a homogeneous mixture? Q 2 :Which of the following statements is true about mixtures? Q 3 :What is the composition of air? Q 4 :What is the main difference between elements and compounds? Q 5 :Which of the following is an alloy? Q 6 :In the reaction of iron and hydrochloric acid, what is produced? Q 7 :Which of the following mixtures is heterogeneous? Q 8 :In the formation of iron sulfide from iron and sulfur, what is the role of heat? Q 9 :What is formed when hydrogen and oxygen react? Q 10 :Assertion: All compounds have a fixed composition. Reason: Mixtures can vary in composition. Q 11 :What type of reaction occurs when a compound is formed from its elements? Q 12 :Which of the following is an example of a pure substance? Q 13 :Which of the following is a characteristic of compounds? Q 14 :What type of change occurs when iron reacts with sulfur to form iron sulfide? Q 15 :Which of the following is NOT a property of metals?
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