Last Updated: September 2026 |
Target Audience: Class 9 & 10 Students |
Curriculum Mapping: Federal Board (FBISE) & Punjab Boards |
Subjects : Mathematics, Physics, Chemistry, Biology |
Target Audience: Class 9 & 10 Students |
Curriculum Mapping: Federal Board (FBISE) & Punjab Boards |
Subjects : Mathematics, Physics, Chemistry, Biology |
Academic Science Quiz Portal
Comprehensive Practice for Class 9 and 10 Science Syllabi
Welcome to the Academic Science Quiz hub of sscquizhub.com. Designed specifically for Class 9 and Class 10 students, our platform features an extensive repository of multiple-choice questions mapped directly to the curricula of the Federal Board (FBISE) and Punjab Boards.
Whether you are preparing for board exams or competitive assessments, our database covers core subjects including Physics, Chemistry, Biology, and General Science. Each question is accompanied by detailed explanations to reinforce conceptual clarity and objective-testing strategies.
Available Subject Modules & Coverage
- Physics (Class 9 & 10): Covers Kinematics, Dynamics, Work & Energy, Waves, Geometrical Optics, Electrostatics, and Current Electricity.
- Chemistry (Class 9 & 10): Covers Atomic Structure, Periodic Table, Chemical Bonding, Solutions, Electrochemistry, and Acids/Bases.
- Biology (Class 9 & 10): Covers Cell Biology, Bioenergetics, Nutrition, Gas Exchange, Homeostasis, and Genetics.
- General Science: Foundation modules focusing on integrated scientific principles and everyday science.
🔍 Question Validation & Quality Assurance: To ensure high academic accuracy, our question bank goes through a rigorous multi-tier validation pipeline. Questions are initially processed using advanced AI modules to check logical consistency, followed by verification against standard curriculum textbooks and authoritative online resources via Google. Detailed explanations are made available to help students learn from each attempt.
💡 Study Tip: For optimal retention, use these quizzes in tandem with your textbook chapters. Read the relevant chapter, complete a targeted test, and review the explanations for any missed questions.
Choose a subject below to begin your practice:
1. Physics
Master kinematics, dynamics, work and energy, thermodynamics, and electromagnetism.
2. Chemistry
Test your grasp on organic, inorganic, and physical chemistry to ensure no topic is left unprepared.
3. Biology
Evaluate your knowledge of the entire living world, from cell biology to human physiology.
4. General Science
Challenge yourself with complete problem sets covering foundational science concepts.
⚙️ INTERACTIVE QUIZ SETUP
📂 Available Academic Question Bank Coverage
Our academic database is structured by grade level and textbook chapters to support board exam preparation and conceptual mastery:
Class 10 Biology:
7 Chapters (342+ MCQs)
Class 10 Chemistry:
5 Chapters (209+ MCQs)
Class 10 Mathematics:
12 Chapters (1014+ MCQs)
Class 10 Physics:
7 Chapters (509+ MCQs)
Class 11 Mathematics:
9 Chapters (2727+ MCQs)
Class 11 Physics:
11 Chapters (1983+ MCQs)
Class 9 Biology:
13 Chapters (1009+ MCQs)
Class 9 Chemistry:
14 Chapters (1141+ MCQs)
Class 9 Mathematics:
16 Chapters (1004+ MCQs)
Class 9 Physics:
9 Chapters (722+ MCQs)
Class General General:
1 Chapters (199+ MCQs)
📚 Solved Academic MCQs & Concept Explanations – 10 | Mathematics | Chapter 9: Chords of a Circle
Study these curriculum-aligned objective questions with verified answers and step-by-step explanations below, or use the interactive quiz configurator above to launch a customized test.
Q1Nature of a concave mirror image?
💡 Explanation: A concave mirror forms a real, inverted image when the object is at the centre of curvature; the reflected rays converge at that point.
Q2What is true about a singular matrix?
💡 Explanation: A singular matrix has determinant zero, making the inverse undefined because it would require division by zero.
Q3What is the role of water photolysis in photosynthesis?
💡 Explanation: Photolysis splits water into electrons, protons and O₂; the electrons replace those lost by chlorophyll in Photosystem II.
Q4According to Boyle's Law, what happens to the pressure when the volume is reduced to one‑third at constant temperature?
💡 Explanation: Boyle's Law states P∝1/V, so P1V1=P2V2. With V2=V1/3, P2=3P1, i.e., pressure triples.
Q5What is the fundamental difference between EMF and PD?
💡 Explanation: EMF is the maximum potential difference of a source when no current flows, whereas PD is the work done moving charge between two points.
Q6If the quadratic px^2+qx+r=0 has equal roots, which condition must hold?
💡 Explanation: Equal roots occur only when the discriminant is zero, so q^2-4pr=0.
Q7What is the main function of the medulla oblongata?
💡 Explanation: The medulla links the brain to the spinal cord and regulates vital involuntary functions such as respiration, blood pressure, and heart rate.
Q8Which property uniquely identifies a colloid?
💡 Explanation: Colloids show the Tyndall effect; their particles scatter light, unlike true solutions, and they do not settle like suspensions.
Q9What image forms at the center of curvature of a concave mirror?
💡 Explanation: At the center of curvature, reflected rays converge at the same point, producing a real, inverted image of equal size.
Q10What is the main function of alveolar surfactant?
💡 Explanation: Surfactant lowers surface tension in the alveoli, preventing collapse during exhalation.
Q11What is the role of water photolysis?
💡 Explanation: Photolysis splits water into protons, electrons, and O₂; the electrons replace those lost by chlorophyll in Photosystem II, essential for the light reactions.
Q12According to Boyle's Law, what happens to the pressure when a gas's volume is reduced to one‑third at constant temperature?
💡 Explanation: Boyle's Law states P∝1/V; cutting the volume to one‑third makes the pressure three times larger.
Q13Main difference between EMF and PD?
💡 Explanation: EMF is the maximum potential difference of a source with no current (energy supplied), while PD is the work done moving charge between two points in a circuit.
Q14When px^2+qx+r=0 has equal roots, which condition must hold?
💡 Explanation: Equal real roots require the discriminant to be zero, so q^2-4pr=0.
Q15Which functional group defines a ketone?
💡 Explanation: A ketone contains a carbonyl (C=O) attached to two carbon atoms; attachment to hydrogen gives an aldehyde.
Q16What is the projectile's acceleration at its highest point?
💡 Explanation: At the top the vertical velocity is zero, but gravity still provides a constant downward acceleration g.
Q17What is the total work done by gravity on a satellite in a circular orbit?
💡 Explanation: Gravity points toward the center while the satellite moves tangentially, so the force is perpendicular to displacement and does no work over one orbit.
Q18If the distance between two point masses is halved, how does the gravitational force change?
💡 Explanation: Force varies as 1/r²; halving r makes (1/(½)²)=4 times larger.
Q19What distinguishes specific heat capacity from heat capacity for a solid?
💡 Explanation: Heat capacity is the heat needed to raise the whole object's temperature by 1 K; specific heat capacity is expressed per unit mass (e.g., per 1 kg).
Q20What happens when a ray in a denser medium hits the boundary at the critical angle?
💡 Explanation: At the critical angle the refracted ray makes a 90° angle with the normal, so it skims the interface rather than entering the rarer medium.