ICSE Class 10 Machines — Mock Test (2027)
Free online mock test for Machines (ICSE Class 10 Physics) — 20 competency-based questions based on the latest CISCE 2027 syllabus, with instant marking. Try the samples below, then take the full test free.
What to expect: This mock test covers key concepts from the Machines chapter — including application-based and competency-focused questions aligned with how ICSE actually sets the paper.
Tip: Attempt without notes first to identify gaps, then review explanations for any wrong answers. Retake after a few days for best retention.
Sample questions
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1.Why is the efficiency of an actual single movable pulley less than 100%?
- A.Friction in the pulley bearings and the weight of the pulley and string increase the effort required.
- B.The load is not perfectly balanced, causing uneven distribution of force.
- C.The pulley system converts all input energy into heat, leaving no useful work.
- D.The mechanical advantage of a single movable pulley is always greater than 2 in real scenarios.
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2.Assertion (A): Scissors are a first-class lever where the fulcrum is positioned between the handles and the blades. Reason (R): In a first-class lever, the fulcrum is between the load and the effort. (a) Both A and R are true, and R is the correct explanation of A. (b) Both A and R are true, but R is not the correct explanation of A. (c) A is true, but R is false. (d) A is false, but R is true.
- A.Both A and R are true, and R is the correct explanation of A.
- B.Both A and R are true, but R is not the correct explanation of A.
- C.A is true, but R is false.
- D.A is false, but R is true.
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3.Define the term efficiency of a machine. Which of the following best explains why a machine cannot be 100% efficient?
- A.Efficiency is the ratio of useful work output to work input, and energy losses occur due to friction and heat dissipation.
- B.Efficiency is the total work done by the machine, and losses occur because machines require constant maintenance.
- C.Efficiency is the speed at which a machine operates, and losses occur due to wear and tear of parts.
- D.Efficiency is the force applied by the machine, and losses occur because machines cannot lift heavy loads.
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4.How is the mechanical advantage related to the velocity ratio for an actual machine, and what can be said about the efficiency of such a machine?
- A.Mechanical advantage equals velocity ratio, and efficiency is equal to 1.
- B.Mechanical advantage is less than velocity ratio, and efficiency is less than 1.
- C.Mechanical advantage is greater than velocity ratio, and efficiency is more than 1.
- D.Mechanical advantage is less than velocity ratio, and efficiency is equal to 1.
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5.A crowbar of length 120 cm has its fulcrum situated at a distance of 20 cm from the load. Calculate the mechanical advantage of the crowbar.
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