Science board previous year questions with solutions
Chapter-wise Science previous year questions from board papers, with diagrams, solutions and marking schemes. 90 questions, every one with a full solution.
Topics
Life Processes 11Carbon and its Compounds 10Acids, Bases and Salts 8Chemical Reactions and Equations 8How do Organisms Reproduce 8Control and Coordination 7Light - Reflection and Refraction 7Electricity 6Magnetic Effects of Electric Current 6Heredity 5Our Environment 5Metals and Non-metals 4Human Eye and Colourful World 3Human Eye and Colorful World 2
Papers
All Science questions
- #180Path of deoxygenated blood in human circulatory systemCentral Board of Secondary EducationSCIMCQEasy
- #181Substances broken down by lipaseCentral Board of Secondary EducationSCIMCQEasy
- #182Emergency gland in human bodyCentral Board of Secondary EducationSCIMCQEasy
- #183Correct food chain in an ecosystemCentral Board of Secondary EducationSCIMCQEasy
- #184Function affected by defect in cerebellumCentral Board of Secondary EducationSCIMCQEasy
- #185Path of exhaled air during respirationCentral Board of Secondary EducationSCIMCQMedium
- #186New combination of characters in F2 progenyCentral Board of Secondary EducationSCIMCQMedium
- #187Assertion-Reason: Regeneration in Hydra and PlanariaCentral Board of Secondary EducationSCIMCQMedium
- #188Assertion-Reason: Energy transfer in trophic levelsCentral Board of Secondary EducationSCIMCQEasy
- #189Translocation of food in plantsCentral Board of Secondary EducationSCITITAMedium
- #190Opening and closing mechanism of stomataCentral Board of Secondary EducationSCITITAMedium
- #191Sex determination in humansCentral Board of Secondary EducationSCITITAEasy
- #192Thigmonastic movement in sensitive plantCentral Board of Secondary EducationSCITITAMedium
- #193Ozone layer formation and CFCs concernCentral Board of Secondary EducationSCITITAMedium
- #194Stability of species DNA during sexual reproductionCentral Board of Secondary EducationSCITITAMedium
- #195Human kidney structure and substance concentrationCentral Board of Secondary EducationSCISET · 4QMedium
- #196Pollination, fertilization and seed partsCentral Board of Secondary EducationSCISET · 3QHard
- #197Placenta structure/function and STDsCentral Board of Secondary EducationSCISET · 2QMedium
- #198Valency/Bonds formed by carbon atomCentral Board of Secondary EducationSCIMCQEasy
- #199Salts without water of crystallizationCentral Board of Secondary EducationSCIMCQEasy
- #200Unsaturated hydrocarbonsCentral Board of Secondary EducationSCIMCQEasy
- #201Role of CaCl2 in guard tubeCentral Board of Secondary EducationSCIMCQEasy
- #202Functional group in acetoneCentral Board of Secondary EducationSCIMCQEasy
- #203Oxidation and reduction in MnO2 + HCl reactionCentral Board of Secondary EducationSCIMCQMedium
- #204Olfactory indicator for visually challengedCentral Board of Secondary EducationSCIMCQEasy
- #205Assertion-Reason: Nature of sodium acetateCentral Board of Secondary EducationSCIMCQEasy
- #206Chemical equations for MnO2+Al and Fe+SteamCentral Board of Secondary EducationSCITITAMedium
- #207Carbon compound versatility and aldehyde identificationCentral Board of Secondary EducationSCITITAMedium
- #208Oxidation of ethanol to ethanoic acidCentral Board of Secondary EducationSCITITAMedium
- #209Ant sting acid and pH indicator testCentral Board of Secondary EducationSCITITAMedium
- #210Corrosion of metals and Statue of LibertyCentral Board of Secondary EducationSCISET · 4QMedium
- #211Five chemical equationsCentral Board of Secondary EducationSCITITAMedium
- #212Thermal decomposition of lead nitrate and precipitation reactionCentral Board of Secondary EducationSCITITAMedium
- #213Focal length of convex mirror with convergent beamCentral Board of Secondary EducationSCIMCQMedium
- #214Angle of incidence and reflection from ray diagramCentral Board of Secondary EducationSCIMCQEasy
- #215Assertion-Reason: Bending straight wire into circular coilCentral Board of Secondary EducationSCIMCQMedium
- #216Scattering of light by fine and large particlesCentral Board of Secondary EducationSCITITAMedium
- #217Spectrum formation in natureCentral Board of Secondary EducationSCITITAMedium
- #218Power consumed by bulb at reduced voltageCentral Board of Secondary EducationSCITITAMedium
- #219Magnetic force, magnetic field of circular coils, and intersecting field linesCentral Board of Secondary EducationSCISET · 3QMedium
- #220Presbyopia correction and pupil light controlCentral Board of Secondary EducationSCISET · 2QMedium
- #221Precautions against electrical accidentsCentral Board of Secondary EducationSCISET · 2QEasy
- #222Ohm's Law experiment with varying cells/materialsCentral Board of Secondary EducationSCISET · 4QMedium
- #223Convex mirror image formation and numericalCentral Board of Secondary EducationSCISET · 2QHard
- #224Optical centre and converging lens numerical on meter scaleCentral Board of Secondary EducationSCISET · 4QHard
- #225Protein digesting enzyme in stomachCentral Board of Secondary EducationSCIMCQEasy
- #226Function of transpirationCentral Board of Secondary EducationSCIMCQEasy
- #227Growth of tendril in pea plantCentral Board of Secondary EducationSCIMCQMedium
- #228Hormone regulating metabolismCentral Board of Secondary EducationSCIMCQEasy
- #229Bacterial sexually transmitted diseasesCentral Board of Secondary EducationSCIMCQMedium
50 / 90