ICSE Class 10 questions and answers
ICSE Class 10 subject practice, clearly separate from CBSE/NCERT labeling.
The ICSE label describes the intended study track, not an endorsement or a verified mapping to the latest syllabus. These are practice variations, many generated from templates and numeric inputs, not an official question bank. They remain outside search indexing until at least 100 independently reviewed questions across five chapters are available.
Questions and clear answers
01Physics · foundation · Editorial previewWhat is the moment of a force?+
It is the turning effect about a point, equal to force multiplied by the perpendicular lever arm.
02Mathematics · foundation · Editorial previewWhat is the sum of a triangle's interior angles?+
The interior angles of a triangle add to 180 degrees in Euclidean geometry.
03Physics · foundation · Editorial previewWhat does mechanical advantage compare?+
Mechanical advantage compares the output load force to the input effort force.
04Chemistry · foundation · Editorial previewWhy do metals usually conduct electricity?+
Mobile electrons within metallic bonding carry electric charge through the material.
05Mathematics · Commercial mathematics · advanced · Editorial previewIn icse class 10 — Commercial mathematics: Calculate simple interest on ₹130500 at 12% per year for 4 years.+
SI = PRT/100 = 130500 × 12 × 4/100 = ₹62640.
06Mathematics · Linear equations · foundation · Editorial previewIn icse class 10 — Linear equations: Solve 19x + 35 = 36439 for x.+
Subtract 35 and divide by 19: x = 1916.
07Mathematics · Quadratic equations · foundation · Editorial previewIn icse class 10 — Quadratic equations: Solve x² − 2535x + 20216 = 0.+
Factor as (x − 2527)(x − 8) = 0; x = 2527 or x = 8.
08Mathematics · Mensuration · intermediate · Editorial previewIn icse class 10 — Mensuration: A rectangular box is 10 cm by 8 cm by 9 cm. Find its volume.+
Volume = 10 × 8 × 9 = 720 cm³.
09Mathematics · Trigonometry · foundation · Editorial previewIn icse class 10 — Trigonometry: In a right triangle, sides opposite and adjacent to angle θ are 51 cm and 60 cm. Find sin θ to 4 decimals.+
Hypotenuse = √(2601 + 3600) ≈ 78.7464 cm; sin θ = 51/hypotenuse ≈ 0.6476.
10Mathematics · Statistics · advanced · Editorial previewIn icse class 10 — Statistics: Four measurements are 4360, 45, 4361 and 46. What is their arithmetic mean?+
Sum = 8812; divide by 4 to get 2203.
11Physics · Force · intermediate · Editorial previewIn icse class 10 — Force: An object of mass 8 kg accelerates at 12 m/s². Find the net force.+
Newton's second law: F = ma = 8 × 12 = 96 newtons.
12Physics · Work power energy · foundation · Editorial previewIn icse class 10 — Work power energy: A 15 N force moves an object 2 m in the same direction as the force. Calculate work.+
Work = force × displacement = 15 × 2 = 30 joules.
13Physics · Electricity · foundation · Editorial previewIn icse class 10 — Electricity: A resistor of 22 Ω carries 9 A of current. Find the voltage.+
V = IR = 9 × 22 = 198 volts, assuming Ohm's law applies.
14Chemistry · Periodic table · intermediate · Editorial previewIn icse class 10 — Periodic table: A neutral hypothetical atom has 1805 protons. How many electrons does it contain?+
Electrical neutrality means electrons equal protons, so it has 1805 electrons. This does not identify a real stable isotope.
15Chemistry · Mole concept · advanced · Editorial previewIn icse class 10 — Mole concept: Each of 6 identical containers holds 234 g of water. Using molar mass 18 g/mol, how many moles are there across all containers?+
Total mass = 6 × 234 g; moles = total mass/18 = 78 mol.
16Physics · Light · foundation · Editorial previewIn icse class 10 — Light: A thin convex lens has focal length 20 cm. An object lies 53 cm from it. Find approximate image distance using the thin-lens equation.+
With 1/f = 1/u + 1/v for positive object/image distances, v = fu/(u-f) = 20×53/33 ≈ 32.121 cm.
17Mathematics · Commercial mathematics · intermediate · Editorial previewIn icse class 10 — Commercial mathematics: Calculate simple interest on ₹363800 at 4% per year for 3 years.+
SI = PRT/100 = 363800 × 4 × 3/100 = ₹43656.
18Mathematics · Linear equations · foundation · Editorial previewIn icse class 10 — Linear equations: Solve 11x + 6 = 46745 for x.+
Subtract 6 and divide by 11: x = 4249.
This is an educational practice preview. Answers and board-specific alignment are undergoing editorial review; these are not official exam questions.