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Your 90-Day Foundation Study Plan

84 concepts, one a day, across Class 8 → 9 → 10 — subjects interleaved so ideas stick, and a final revision week to lock it in. Mark each as learned to watch your growth, keep your streak alive, and walk into your boards, NEET and JEE already ahead.

Your progress — Foundation - Class 8 to 10

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Days 1–24

Class 8

Build the basics0/24 learned▾
  1. Day 1PhysicsA sharp knife cuts better than a blunt one. Explain using the idea of pressure.
  2. Day 2ChemistryState two physical properties that distinguish metals from non-metals.
  3. Day 3BiologyGive two differences between a plant cell and an animal cell.
  4. Day 4MathsSolve the linear equation 3x + 5 = 20.
  5. Day 5PhysicsWhy is friction called a necessary evil?
  6. Day 6ChemistryWhat three conditions are necessary for combustion to take place?
  7. Day 7BiologyName two useful and two harmful micro-organisms and state what they do.
  8. Day 8MathsFind the square root of 1225 by prime factorisation.
  9. Day 9PhysicsHow is sound produced, and why can it not travel through vacuum?
  10. Day 10ChemistryWhy are coal and petroleum called fossil fuels, and why should we use them carefully?
  11. Day 11BiologyWhat is the difference between manure and fertiliser?
  12. Day 12MathsExpress 0.0000073 in standard (scientific) form.
  13. Day 13PhysicsWhat is electroplating? Give one use of it.
  14. Day 14ChemistryWhy is the disposal of plastic a serious environmental problem?
  15. Day 15BiologyWhat are secondary sexual characters, and which glands control them?
  16. Day 16MathsA shopkeeper buys a bag for 500 rupees and sells it for 575 rupees. Find the profit percent.
  17. Day 17PhysicsState the two laws of reflection of light.
  18. Day 18ChemistryWhat is the greenhouse effect and why is it a concern today?
  19. Day 19BiologyWhat is the difference between oviparous and viviparous animals? Give one example of each.
  20. Day 20MathsUse a standard identity to expand (x + 5)^2.
  21. Day 21PhysicsWhat causes lightning, and how does a lightning conductor protect a building?
  22. Day 22ChemistryWhat are the characteristics of a good fuel?
  23. Day 23BiologyWhat is biodiversity, and why should it be conserved?
  24. Day 24MathsFind the area of a trapezium whose parallel sides are 12 cm and 8 cm and whose height is 5 cm.
Days 25–48

Class 9

Deepen the core0/24 learned▾
  1. Day 25PhysicsA car starting from rest accelerates uniformly at 2 m/s^2 for 5 seconds. Find its final velocity and the distance travelled.
  2. Day 26ChemistryWhy does evaporation cause cooling?
  3. Day 27BiologyGive two differences between a prokaryotic and a eukaryotic cell.
  4. Day 28MathsRationalise the denominator of 1 / sqrt(2).
  5. Day 29PhysicsState Newton's second law of motion and define momentum.
  6. Day 30ChemistryGive two differences between a mixture and a compound.
  7. Day 31BiologyWhat is meristematic tissue and where is it found in plants?
  8. Day 32MathsUsing the remainder theorem, find the remainder when p(x) = x^3 + 3x^2 + 3x + 1 is divided by (x + 1).
  9. Day 33PhysicsState the universal law of gravitation and write its formula.
  10. Day 34ChemistryState the law of conservation of mass with an example.
  11. Day 35BiologyWhat is the difference between mixed cropping and intercropping?
  12. Day 36MathsWhere does the line x + y = 5 meet the x-axis and the y-axis?
  13. Day 37PhysicsDefine work done by a force and state the formula for kinetic energy.
  14. Day 38ChemistryDefine the atomic number and the mass number of an atom.
  15. Day 39BiologyWhy is the atmosphere important for life on Earth?
  16. Day 40MathsFind the area of a triangle whose sides are 3 cm, 4 cm and 5 cm using Heron's formula.
  17. Day 41PhysicsWhat is an echo, and what is the minimum distance needed to hear one clearly?
  18. Day 42ChemistryWhat is the Tyndall effect, and what does it tell us about a mixture?
  19. Day 43BiologyWhat is osmosis? What happens to a cell placed in pure water?
  20. Day 44MathsFind the volume of a sphere of radius 7 cm. (Take pi = 22/7.)
  21. Day 45PhysicsState Archimedes' principle. Why does an iron nail sink but an iron ship float?
  22. Day 46ChemistryWhat are isotopes? Give one example.
  23. Day 47BiologyWhat are xylem and phloem? State the function of each.
  24. Day 48MathsFind the mean of the data: 10, 15, 20, 25, 30.
Days 49–84

Class 10

Master board-level concepts0/36 learned▾
  1. Day 49PhysicsWhy does a ray of light bend when it passes from air into glass?
  2. Day 50ChemistryWhen an iron nail is dipped in copper sulphate solution, the blue colour fades. Write the reaction and name its type.
  3. Day 51BiologyHow is oxygen transported from the lungs to the tissues in human beings?
  4. Day 52MathsFind the HCF of 96 and 404 using Euclid's division algorithm.
  5. Day 53PhysicsState the mirror formula and the sign convention used for a concave mirror.
  6. Day 54ChemistryWhat is the pH scale, and how does pH change as a solution becomes more acidic?
  7. Day 55BiologyGive two differences between arteries and veins.
  8. Day 56MathsFind the zeroes of the polynomial x^2 - 7x + 10 and verify the relationship between the zeroes and the coefficients.
  9. Day 57PhysicsState Ohm's law and define electrical resistance.
  10. Day 58ChemistryZinc can displace copper from copper sulphate, but copper cannot displace zinc from zinc sulphate. Explain.
  11. Day 59BiologyWhat is a reflex arc? Trace the path of a reflex action when you touch a hot object.
  12. Day 60MathsSolve the pair of equations: 2x + 3y = 13 and x - y = -1.
  13. Day 61PhysicsA current of 2 A flows through a 5 ohm resistor. Find the potential difference across it and the power dissipated.
  14. Day 62ChemistryWhy does carbon form a very large number of compounds?
  15. Day 63BiologyWhy does sexual reproduction produce more variation than asexual reproduction?
  16. Day 64MathsFind the roots of x^2 - 5x + 6 = 0 and state the nature of the roots using the discriminant.
  17. Day 65PhysicsState the right-hand thumb rule for the magnetic field around a straight current-carrying wire.
  18. Day 66ChemistryIn the reaction CuO + H2 -> Cu + H2O, identify the substance oxidised and the substance reduced.
  19. Day 67BiologyIn a monohybrid cross between a tall pea plant (TT) and a short pea plant (tt), what is the ratio of tall to short plants in the F2 generation? Explain briefly.
  20. Day 68MathsThe first term of an AP is 3 and the common difference is 5. Find its 10th term.
  21. Day 69PhysicsA convex lens has a focal length of 25 cm. Find its power.
  22. Day 70ChemistryWhat is a neutralisation reaction? Give the general equation and one everyday use.
  23. Day 71BiologyWhat is photosynthesis? Write its balanced equation and the conditions needed.
  24. Day 72MathsFind the sum of the first 20 terms of the AP 2, 5, 8, 11, ...
  25. Day 73PhysicsWhy does the clear sky appear blue?
  26. Day 74ChemistryWhat is a homologous series? State two of its characteristics.
  27. Day 75BiologyWhat is a food chain? State the ten percent law of energy transfer.
  28. Day 76MathsState the Basic Proportionality Theorem (Thales' theorem).
  29. Day 77MathsFind the distance between the points (2, 3) and (5, 7).
  30. Day 78MathsIf sin(theta) = 3/5, find cos(theta) and tan(theta), where theta is acute.
  31. Day 79MathsThe angle of elevation of the top of a tower from a point 30 m from its base is 30 degrees. Find the height of the tower.
  32. Day 80MathsA point P is 13 cm from the centre of a circle of radius 5 cm. Find the length of the tangent drawn from P to the circle.
  33. Day 81MathsFind the volume of a cone whose base radius is 3 cm and height is 4 cm. (Take pi = 22/7.)
  34. Day 82MathsThe mean of a distribution is 27 and its median is 30. Estimate the mode using the empirical relationship.
  35. Day 83MathsOne card is drawn at random from a well-shuffled deck of 52 playing cards. What is the probability that it is a king?
  36. Day 84MathsEvaluate 2 tan^2(45 degrees) + cos^2(30 degrees) - sin^2(60 degrees).
Days 85–90

Revision & self-test

Lock it in for good▾
  1. ★Day 85Revise every Class 8 concept - redo the ones that felt tricky
  2. ★Day 86Revise every Class 9 concept - play with the interactive diagrams
  3. ★Day 87Revise Class 10 Physics & Chemistry
  4. ★Day 88Revise Class 10 Biology & Maths
  5. ★Day 89Self-test: recall each 'why' and memory trick from memory
  6. ★Day 90Clear the last doubts with the AI tutor + target weak areas

Small steps, every day.

Ninety days from today, this whole foundation can be second nature. Open today's concept, and if anything is unclear, the AI tutor is one tap away.

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