Class 8 Mathematics – Daily Revision MCQ (English Medium)
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Which of the following is an irrational number?
Chapter 1: Rational and Irrational numbers
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Answer: C. √2
√2 cannot be written in the form p/q, so it is irrational; the others are rational numbers.Two parallel lines are cut by a transversal. One interior angle measures 65°. What is the other interior angle on the same side of the transversal?
Chapter 2: Parallel lines and transversal
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Answer: B. 115°
Each pair of interior angles is supplementary, so 180° − 65° = 115°.What is the value of 8^(2/3)?
Chapter 3: Indices and Cube root
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Answer: A. 4
8^(2/3) means the square of the cube root of 8: cube root of 8 is 2, and 2² = 4.In △ABC, seg AD is a median of length 9 cm and G is the centroid. What is l(AG)?
Chapter 4: Altitudes and Medians of a triangle
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Answer: C. 6 cm
The centroid divides each median in the ratio 2:1 from the vertex, so AG = 2/3 × 9 = 6 cm.What is the expansion of (x + 3)(x + 5)?
Chapter 5: Expansion formulae
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Answer: B. x² + 8x + 15
(x + a)(x + b) = x² + (a + b)x + ab, so x² + 8x + 15.x varies directly as y. When y = 4, x = 12. What is x when y = 7?
Chapter 7: Variation
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Answer: A. 21
x ∝ y gives x = ky; 12 = 4k so k = 3, and x = 3 × 7 = 21.The marked price of a bag is ₹800 and a 15% discount is given. What is its selling price?
Chapter 9: Discount and Commission
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Answer: C. ₹680
Discount = 15% of 800 = ₹120; selling price = marked price − discount = 800 − 120 = ₹680.What is the compound interest on ₹5,000 at 8% per annum for 2 years, compounded annually?
Chapter 14: Compound interest
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Answer: D. ₹832
A = 5000 × (1 + 8/100)² = ₹5,832, so compound interest = 5,832 − 5,000 = ₹832.What is the total surface area of a cube of side 4 cm?
Chapter 16: Surface area and Volume
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Answer: D. 96 cm²
Total surface area of a cube = 6l² = 6 × 4 × 4 = 96 cm².The radius of a circle is 13 cm and a chord is 24 cm long. How far is the chord from the centre?
Chapter 17: Circle : Chord and Arc
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Answer: A. 5 cm
The perpendicular from the centre bisects the chord, so half chord = 12 cm; distance = √(13² − 12²) = √25 = 5 cm.
Class 8: MCQ in other subjects
All questions are written by PadhaiNotes in our own words from the chapters of the official Maharashtra State Board Balbharati textbook (ebalbharati.in). Each question shows its chapter.