DAILY TEST

Q1. Write 5/8 as an equivalent fraction with denominator 40.📘 Ch. 7 — Fractions⭐ KV Academy Original

Q2. Which is greater: 7/10 or 2/3? Give a reason.📘 Ch. 7 — Fractions⭐ KV Academy Original

Q3. Find 3/4 + 1/8.📘 Ch. 7 — Fractions⭐ KV Academy Original

Q4. A ribbon is 6 m long. If 2 1/2 m is used, how much remains?📘 Ch. 7 — Fractions⭐ KV Academy Original

Q5. Find the perimeter of a rectangle of length 15 cm and breadth 8 cm.📘 Ch. 6 — Perimeter and Area⭐ KV Academy Original

Q6. Find the HCF of 48 and 72.📘 Ch. 5 — Prime Time⭐ KV Academy Original

Q7. The numbers of books read by five students are 8, 12, 7, 10 and 13. Find the mean.📘 Ch. 4 — Data Handling and Presentation⭐ KV Academy Original

Q8. A square garden has side 12 m. Find its area and perimeter.📘 Ch. 6 — Perimeter and Area⭐ KV Academy Original

Q9. A tank is 3/4 full. After 1/6 of the tank's capacity is used, what fraction remains?📘 Ch. 7 — Fractions⭐ KV Academy Original

Q10. A rectangular field is 24 m long and 16 m wide. A square flower bed of side 8 m is made inside it. Find the remaining area.📘 Ch. 6 — Perimeter and Area⭐ KV Academy Original

Q1. Simplify: 18 − 7 + 5.📘 Ch. 2 — Arithmetic Expressions⭐ KV Academy Original

Q2. If (2x, y−3) = (10, 4), find x and y.📘 Ch. 4 — Expressions using Letter-Numbers⭐ KV Academy Original

Q3. Starting from −4 on a number line, move 9 units to the right. Where do you reach?📘 Ch. 3 — A Peek Beyond The Point⭐ KV Academy Original

Q4. Write an expression for '7 less than three times n'.📘 Ch. 4 — Expressions using Letter-Numbers⭐ KV Academy Original

Q5. Evaluate 5a + 2 when a = 4.📘 Ch. 4 — Expressions using Letter-Numbers⭐ KV Academy Original

Q6. A number is multiplied by 4 and then increased by 7 to give 31. Find the number.📘 Ch. 3 — A Peek Beyond The Point⭐ KV Academy Original

Q7. Simplify: 3(2x + 5) − 4x.📘 Ch. 4 — Expressions using Letter-Numbers⭐ KV Academy Original

Q8. On a number line, start at 6, move 11 units left and then 4 units right. State the final position.📘 Ch. 3 — A Peek Beyond The Point⭐ KV Academy Original

Q9. Ravi says 5(x+2) = 5x+2 for every value of x. Test the statement using x=3 and explain.📘 Ch. 4 — Expressions using Letter-Numbers⭐ KV Academy Original

Q10. A number and its double have a sum of 45. Form an equation and find the number.📘 Ch. 3 — A Peek Beyond The Point⭐ KV Academy Original

Q1. Classify figures into quadrilaterals based on 4 straight sides and angles.📘 Ch. 4 — Quadrilaterals📝 Question Bank • M08-2026-101

Q2. Identify the expression representing thickness of a sheet of initial thickness v after 10 folds.📘 Ch. 2 — Power Play📝 Question Bank • M08-2026-040

Q3. Identify and prove which expressions like 4m+2q = 2(2m+q) always yield even values for any integers.📘 Ch. 5 — Number Play📝 Question Bank • M08-2026-132

Q4. Demonstrate addition in Egyptian and base-5 systems using regrouping of powers.📘 Ch. 3 — A Story of Numbers📝 Question Bank • M08-2026-091

Q5. Represent 'two more than square' and 'sum of consecutive squares'; analyze 2×2 calendar products.📘 Ch. 6 — We Distribute, Yet Things Multiply📝 Question Bank • M08-2026-178

Q6. Perform additions CCXXXII + CCCXIII and LXXXVII + LXXVIII, and explain why Roman multiplication is hard.📘 Ch. 3 — A Story of Numbers📝 Question Bank • M08-2026-085

Q7. Solve problems on unique milk packet ID codes, alphanumeric locks, and sheep+goat populations.📘 Ch. 2 — Power Play📝 Question Bank • M08-2026-075

Q8. Simplify: 7(2x − 3) − 3x.📘 Ch. 6 — We Distribute, Yet Things Multiply⭐ KV Academy Original

Q9. Express 0.000072 in scientific notation.📘 Ch. 2 — Power Play⭐ KV Academy Original

Q10. A rectangle has sides (x+3) cm and (x−3) cm. Express its area in simplest form.📘 Ch. 6 — We Distribute, Yet Things Multiply⭐ KV Academy Original

Q1. An arc of a circle subtends an angle of 70° at the centre. What is the measure of the angle subtended by the arc at a point on the circle?📘 Ch. 5 — I'm Up and Down, and Round and Round📝 Question Bank • M09-2026-293

Q2. Fill in the blank: The probability of an event that is certain to happen is ____.📘 Ch. 7 — The Mathematics of Maybe: Introduction to Probability📝 Question Bank • M09-2026-421

Q3. Calculate, correct to 3 significant figures, the circumference of a circle with radius 7 cm. (Use π = 22/7.)📘 Ch. 6 — Measuring Space: Perimeter and Area📝 Question Bank • M09-2026-319

Q4. What are the coefficients of x² and x³ in the polynomial x⁴ − 3x³ + 6x² − 2x + 7?📘 Ch. 2 — Introduction to Linear Polynomials📝 Question Bank • M09-2026-042

Q5. Find the sum: 2/5 + 3/10.📘 Ch. 3 — The World of Numbers📝 Question Bank • M09-2026-121

Q6. Find the sum: −4/7 + 3/14.📘 Ch. 3 — The World of Numbers📝 Question Bank • M09-2026-123

Q7. The village playground is shaped as a square of side 40 metres. A path of width s metres is created around the playground. Find an expression for the area of the path in terms of s.📘 Ch. 4 — Exploring Algebraic Identities📝 Question Bank • M09-2026-265

Q8. The number 0.999... is rational. Using algebra (let x = 0.999..., multiply by 10, and subtract), explain why 0.999... is exactly equal to 1.📘 Ch. 3 — The World of Numbers📝 Question Bank • M09-2026-150

Q9. In two concentric circles, chord BC of the larger circle is tangent to the smaller circle with length l. Show that the annular area between them is (1/4)πl².📘 Ch. 6 — Measuring Space: Perimeter and Area📝 Question Bank • M09-2026-386

Q10. A cyclic quadrilateral has sides 5, 5, 12, 12 units. Find its area using Brahmagupta's formula.📘 Ch. 5 — I'm Up and Down, and Round and Round📝 Question Bank • M09-2026-301

Q1. State if triangles DEF (70°, 80°) and PQR (80°, 30°) are similar. Write the criterion and symbolic form.📘 Ch. 6 — Triangles📝 Question Bank • M10-2026-229

Q2. State if triangles ABC and PQR are similar when their angles are 60°, 80°, 40°. Write the similarity criterion and symbolic form.📘 Ch. 6 — Triangles📝 Question Bank • M10-2026-224

Q3. Is a, 2a, 3a, 4a, ... an AP? If yes, find d and write three more terms.📘 Ch. 5 — Arithmetic Progressions📝 Question Bank • M10-2026-133

Q4. TP and TQ are tangents to a circle with centre O so that ∠POQ = 110°. Find ∠PTQ.📘 Ch. 10 — Circles📝 Question Bank • M10-2026-341

Q5. S and T lie on PR and QR of triangle PQR such that ∠P = ∠RTS. Show that △RPQ ~ △RTS.📘 Ch. 6 — Triangles📝 Question Bank • M10-2026-233

Q6. Rohan's mother is 26 years older than him. The product of their ages 3 years from now will be 360. Represent this as a quadratic equation.📘 Ch. 4 — Quadratic Equations📝 Question Bank • M10-2026-090

Q7. Two APs have the same common difference. The difference between their 100th terms is 100. What is the difference between their 1000th terms?📘 Ch. 5 — Arithmetic Progressions📝 Question Bank • M10-2026-160

Q8. Determine the AP whose third term is 16 and the 7th term exceeds the 5th term by 12.📘 Ch. 5 — Arithmetic Progressions📝 Question Bank • M10-2026-164

Q9. If the sum of the first 7 terms of an AP is 49 and that of the first 17 terms is 289, find the sum of the first n terms.📘 Ch. 5 — Arithmetic Progressions📝 Question Bank • M10-2026-191

Q10. Altitudes AD and CE of triangle ABC intersect at P. Show: (i) AEP ~ CDP, (ii) ABD ~ CBE, (iii) AEP ~ ADB, (iv) PDC ~ BEC.📘 Ch. 6 — Triangles📝 Question Bank • M10-2026-235

Q1. If the ordered pairs (2x, y−3) and (2, 1) are equal, find x and y.📘 Ch. 4 — Relations📝 Question Bank • A11-2026-054

Q2. Find the least common multiple (LCM) of 5!, 6!, and 7! and express it in simplest factorial form.📘 Ch. 6 — Permutations and Combinations📝 Question Bank • A11-2026-093

Q3. Let A be a non-empty set with n(A)=3. Compute the total number of possible relations on set A.📘 Ch. 4 — Relations📝 Question Bank • A11-2026-060

Q4. A machine costing ₹56,200 depreciates by 20% each year. Find its estimated salvage value after 3 years.📘 Ch. 5 — Sequences and Series📝 Question Bank • A11-2026-085

Q5. In a family of 20, 12 like tea and 15 like coffee. Find how many like both, only tea, and only coffee.📘 Ch. 3 — Set📝 Question Bank • A11-2026-050

Q6. If p times the pth term of an AP equals q times the qth term, prove that its (p+q)th term is zero.📘 Ch. 5 — Sequences and Series📝 Question Bank • A11-2026-072

Q7. A ball dropped from 90 ft rebounds to 1/3 of its previous height each time. Find the distance on the 3rd bounce and the total distance until rest.📘 Ch. 5 — Sequences and Series📝 Question Bank • A11-2026-091

Q8. If the mth and nth terms of a GP are n and m, show that its (m+n)th term is (n^m/m^n)^(1/(m−n)).📘 Ch. 5 — Sequences and Series📝 Question Bank • A11-2026-081

Q9. Bank loans: Personal (15, 3% default), Education (5, 1%), House (10, 2%), Car (10, 5%). If a loan is defaulted, find P(Car loan).📘 Ch. 9 — Probability📝 Question Bank • A11-2026-156

Q10. A die is thrown once and a coin is tossed once. Find the probability of getting an even number on the die and a head on the coin.📘 Ch. 9 — Probability⭐ KV Academy Original

Q1. Find the principal value of cot⁻¹(−1/√3).📘 Ch. 2 — Inverse Trigonometric Functions📝 Question Bank • M12-2026-014

Q2. Evaluate the principal value of cos⁻¹(−1/2).📘 Ch. 2 — Inverse Trigonometric Functions📝 Question Bank • M12-2026-015

Q3. Find the principal value of sin⁻¹(−1/2).📘 Ch. 2 — Inverse Trigonometric Functions📝 Question Bank • M12-2026-153

Q4. Find the principal value of sin⁻¹(1/√2).📘 Ch. 2 — Inverse Trigonometric Functions📝 Question Bank • M12-2026-013

Q5. Find the anti-derivative F(x) of f(x)=4x³−6, given F(0)=3.📘 Ch. 7 — Integrals📝 Question Bank • M12-2026-067

Q6. Find the area of the triangle whose vertices are (3,8), (−4,2) and (5,1) using determinants.📘 Ch. 4 — Determinants📝 Question Bank • M12-2026-035

Q7. For A=[[1,3,3],[1,4,3],[1,3,4]], verify that A·adj(A)=|A|I and find A⁻¹.📘 Ch. 4 — Determinants📝 Question Bank • M12-2026-038

Q8. Write the function tan⁻¹((√(1+x²)−1)/x), x≠0, in simplest form.📘 Ch. 2 — Inverse Trigonometric Functions📝 Question Bank • M12-2026-018

Q9. For A=[[1,1,−1],[2,0,3],[3,−1,2]], B=[[1,3],[0,2],[−1,4]], C=[[1,2,3,−4],[2,0,−2,1]], verify (AB)C=A(BC).📘 Ch. 3 — Matrices📝 Question Bank • M12-2026-027

Q10. Evaluate tan(1/2[sin⁻¹(2x/(1+x²)) + cos⁻¹((1−y²)/(1+y²))]) for |x|<1, y>0, xy<1.📘 Ch. 2 — Inverse Trigonometric Functions📝 Question Bank • M12-2026-020

Q1. Name the instrument used to measure temperature.📘 Ch. 7 — Temperature and its Measurement⭐ KV Academy Original

Q2. What is the SI unit of temperature?📘 Ch. 7 — Temperature and its Measurement⭐ KV Academy Original

Q3. Name the state of matter that has a fixed volume but no fixed shape.📘 Ch. 6 — Materials Around Us⭐ KV Academy Original

Q4. Name the two poles of a bar magnet.📘 Ch. 4 — Exploring Magnets⭐ KV Academy Original

Q5. Why does a metal spoon feel colder than a wooden spoon kept in the same room?📘 Ch. 6 — Materials Around Us⭐ KV Academy Original

Q6. A car travels 180 m in 12 s. Find its speed.📘 Ch. 5 — Measurement of Length and Motion⭐ KV Academy Original

Q7. Why should the bulb of a thermometer be fully immersed while measuring a liquid?📘 Ch. 7 — Temperature and its Measurement⭐ KV Academy Original

Q8. Explain what happens when unlike poles of two magnets are brought close together.📘 Ch. 4 — Exploring Magnets⭐ KV Academy Original

Q9. A student walks 240 m in 3 minutes. Find the speed in m/s.📘 Ch. 5 — Measurement of Length and Motion⭐ KV Academy Original

Q10. Design a simple experiment to compare the temperatures of three liquids using a thermometer safely.📘 Ch. 7 — Temperature and its Measurement⭐ KV Academy Original

Q1. What is the function of a switch in an electric circuit?📘 Ch. 3 — Electricity: Circuits and Their Components⭐ KV Academy Original

Q2. Name one natural indicator.📘 Ch. 2 — Exploring Substances: Acidic, Basic, and Neutral⭐ KV Academy Original

Q3. What is an open circuit?📘 Ch. 3 — Electricity: Circuits and Their Components⭐ KV Academy Original

Q4. Which type of substance turns blue litmus red?📘 Ch. 2 — Exploring Substances: Acidic, Basic, and Neutral⭐ KV Academy Original

Q5. Why does a bulb glow only when the circuit is complete?📘 Ch. 3 — Electricity: Circuits and Their Components⭐ KV Academy Original

Q6. A tester bulb glows with solution A but not with distilled water. What does this suggest?📘 Ch. 3 — Electricity: Circuits and Their Components⭐ KV Academy Original

Q7. How can litmus paper distinguish an acidic solution from a basic solution?📘 Ch. 2 — Exploring Substances: Acidic, Basic, and Neutral⭐ KV Academy Original

Q8. Describe a circuit containing a cell, switch and bulb in which the bulb glows.📘 Ch. 3 — Electricity: Circuits and Their Components⭐ KV Academy Original

Q9. Two cells are connected in opposite directions. Predict the effect on a bulb and explain.📘 Ch. 3 — Electricity: Circuits and Their Components⭐ KV Academy Original

Q10. X turns blue litmus red, Y changes neither litmus, and Z turns red litmus blue. Classify X, Y and Z.📘 Ch. 2 — Exploring Substances: Acidic, Basic, and Neutral⭐ KV Academy Original

Q1. Write the formula for pressure.📘 Ch. 6 — Pressure, Winds, Storms, and Cyclones⭐ KV Academy Original

Q2. What is the SI unit of pressure?📘 Ch. 6 — Pressure, Winds, Storms, and Cyclones⭐ KV Academy Original

Q3. Name one non-contact force.📘 Ch. 5 — Exploring Forces⭐ KV Academy Original

Q4. Give one feature of a balanced diet.📘 Ch. 3 — Health: The Ultimate Treasure⭐ KV Academy Original

Q5. Why does a sharp nail exert more pressure than a blunt nail for the same force?📘 Ch. 6 — Pressure, Winds, Storms, and Cyclones⭐ KV Academy Original

Q6. A force of 60 N acts on an area of 3 m². Find the pressure.📘 Ch. 6 — Pressure, Winds, Storms, and Cyclones⭐ KV Academy Original

Q7. Explain why strong winds can lift roofs of houses.📘 Ch. 6 — Pressure, Winds, Storms, and Cyclones⭐ KV Academy Original

Q8. Give two observations that could indicate microscopic life in pond water.📘 Ch. 2 — The Invisible Living World: Beyond Our Naked Eye⭐ KV Academy Original

Q9. State one role of a balanced diet and one role of physical activity in maintaining health.📘 Ch. 3 — Health: The Ultimate Treasure⭐ KV Academy Original

Q10. Suggest four practical actions for a coastal village before and during a cyclone, with reasons.📘 Ch. 6 — Pressure, Winds, Storms, and Cyclones⭐ KV Academy Original

Q1. Define acceleration.📘 Ch. 4 — Describing Motion Around Us⭐ KV Academy Original

Q2. Name the tissue that transports water in plants.📘 Ch. 3 — Tissues in Action⭐ KV Academy Original

Q3. What is a mixture?📘 Ch. 5 — Exploring Mixtures and their Separation⭐ KV Academy Original

Q4. Write the SI unit of work.📘 Ch. 7 — Work, Energy, and Simple Machines⭐ KV Academy Original

Q5. What happens to an object's motion when an unbalanced force acts on it?📘 Ch. 6 — How Forces Affect Motion⭐ KV Academy Original

Q6. A cyclist changes speed from 4 m/s to 16 m/s in 6 s. Find the acceleration.📘 Ch. 4 — Describing Motion Around Us⭐ KV Academy Original

Q7. Why can filtration separate sand from water but not salt from water?📘 Ch. 5 — Exploring Mixtures and their Separation⭐ KV Academy Original

Q8. A force of 20 N moves an object 5 m in its direction. Find the work done.📘 Ch. 7 — Work, Energy, and Simple Machines⭐ KV Academy Original

Q9. Explain how a simple machine can make a task easier without creating energy.📘 Ch. 7 — Work, Energy, and Simple Machines⭐ KV Academy Original

Q10. A bus brakes suddenly while a standing passenger moves forward. Explain using inertia and give one safety measure.📘 Ch. 6 — How Forces Affect Motion⭐ KV Academy Original

Q1. Write Ohm's law.📘 Ch. 11 — Electricity⭐ KV Academy Original

Q2. Name the SI unit of electric power.📘 Ch. 11 — Electricity⭐ KV Academy Original

Q3. What is the pH of a neutral solution at room temperature?📘 Ch. 2 — Acids, Bases and Salts⭐ KV Academy Original

Q4. Name the functional unit of the kidney.📘 Ch. 5 — Life Processes⭐ KV Academy Original

Q5. Which lens is used to correct myopia?📘 Ch. 10 — Human Eye and Colourful World⭐ KV Academy Original

Q6. A 6 Ω resistor carries a current of 2 A. Find the potential difference.📘 Ch. 11 — Electricity⭐ KV Academy Original

Q7. Why are household appliances connected in parallel rather than in series?📘 Ch. 11 — Electricity⭐ KV Academy Original

Q8. Explain a displacement reaction between a metal and a salt solution with a suitable example.📘 Ch. 3 — Metals and Non-metals⭐ KV Academy Original

Q9. An object is 20 cm from a convex lens of focal length 10 cm. Find the image position using the lens formula.📘 Ch. 9 — Light – Reflection and Refraction⭐ KV Academy Original

Q10. Two resistors of 4 Ω and 8 Ω are connected first in series and then in parallel. Compare the equivalent resistances.📘 Ch. 11 — Electricity⭐ KV Academy Original

Q1. Define displacement.📘 Ch. 1 — Units and Measurements⭐ KV Academy Original

Q2. What is the SI unit of force?📘 Ch.2 — Motion in a Straight Line⭐ KV Academy Original

Q3. State Newton's first law of motion.📘 Ch.4 — Laws of Motion⭐ KV Academy Original

Q4. Write the expression for kinetic energy.📘 Ch.6 — Work, Energy and Power⭐ KV Academy Original

Q5. What is the dimensional formula of velocity?📘 Ch.1 — Units and Measurements⭐ KV Academy Original

Q6. A body changes velocity from 5 m/s to 17 m/s in 4 s. Find its acceleration.📘 Ch.2 — Motion in a Straight Line⭐ KV Academy Original

Q7. Explain the difference between mass and weight.📘 Ch.4 — Laws of Motion⭐ KV Academy Original

Q8. A force of 25 N acts on a body through 8 m in the direction of the force. Find the work done.📘 Ch.6 — Work, Energy and Power⭐ KV Academy Original

Q9. Derive the relation between linear momentum and kinetic energy.📘 Ch.5 — Work, Energy and Power⭐ KV Academy Original

Q10. A block is pulled on a rough horizontal surface. Explain how Newton's laws and friction determine its acceleration.📘 Ch.4 — Laws of Motion⭐ KV Academy Original

Q1. Define mole.📘 Ch.1 — Some Basic Concepts of Chemistry⭐ KV Academy Original

Q2. What is molar mass?📘 Ch.1 — Some Basic Concepts of Chemistry⭐ KV Academy Original

Q3. State the law of conservation of mass.📘 Ch.1 — Some Basic Concepts of Chemistry⭐ KV Academy Original

Q4. What is Avogadro's number?📘 Ch.1 — Some Basic Concepts of Chemistry⭐ KV Academy Original

Q5. Find the number of moles in 18 g of water (H₂O = 18 g mol⁻¹).📘 Ch.1 — Some Basic Concepts of Chemistry⭐ KV Academy Original

Q6. Differentiate between empirical formula and molecular formula.📘 Ch.1 — Some Basic Concepts of Chemistry⭐ KV Academy Original

Q7. Calculate the molarity of 0.5 mol solute in 2 L of solution.📘 Ch.1 — Some Basic Concepts of Chemistry⭐ KV Academy Original

Q8. A compound contains 40% carbon, 6.67% hydrogen and 53.33% oxygen. Find its empirical formula.📘 Ch.1 — Some Basic Concepts of Chemistry⭐ KV Academy Original

Q9. Explain limiting reagent with a simple numerical example.📘 Ch.1 — Some Basic Concepts of Chemistry⭐ KV Academy Original

Q10. A sample contains 3.01×10²³ molecules of CO₂. Calculate its number of moles and mass.📘 Ch.1 — Some Basic Concepts of Chemistry⭐ KV Academy Original

Q1. State Coulomb's law.📘 Ch. 1 — Electric Charges and Fields⭐ KV Academy Original

Q2. Write the SI unit of electric charge.📘 Ch. 1 — Electric Charges and Fields⭐ KV Academy Original

Q3. What is electric field intensity?📘 Ch. 1 — Electric Charges and Fields⭐ KV Academy Original

Q4. State the principle of superposition.📘 Ch. 1 — Electric Charges and Fields⭐ KV Academy Original

Q5. If the separation of two charges is doubled, how does the electrostatic force change?📘 Ch. 1 — Electric Charges and Fields⭐ KV Academy Original

Q6. Calculate the force between 2 μC and 3 μC charges separated by 0.3 m in vacuum. Take k=9×10⁹ N m² C⁻².📘 Ch. 1 — Electric Charges and Fields⭐ KV Academy Original

Q7. Explain why electric field lines never intersect.📘 Ch. 1 — Electric Charges and Fields⭐ KV Academy Original

Q8. Derive the expression for electric field due to a point charge.📘 Ch. 1 — Electric Charges and Fields⭐ KV Academy Original

Q9. Two equal positive charges are placed symmetrically about the origin. Find the direction of electric field at the midpoint and justify.📘 Ch. 1 — Electric Charges and Fields⭐ KV Academy Original

Q10. A charged particle is released in a uniform electric field. Compare its motion for a positive and a negative charge.📘 Ch. 1 — Electric Charges and Fields⭐ KV Academy Original

Q1. Define molarity.📘 Ch. 1 — Solutions⭐ KV Academy Original

Q2. What is a saturated solution?📘 Ch. 1 — Solutions⭐ KV Academy Original

Q3. Write the expression for mole fraction.📘 Ch. 1 — Solutions⭐ KV Academy Original

Q4. Name one colligative property.📘 Ch. 1 — Solutions⭐ KV Academy Original

Q5. What happens to the boiling point when a non-volatile solute is added?📘 Ch. 1 — Solutions⭐ KV Academy Original

Q6. Calculate the molarity of 0.5 mol solute present in 2 L solution.📘 Ch. 1 — Solutions⭐ KV Academy Original

Q7. Give one clear difference between molarity and molality.📘 Ch. 1 — Solutions⭐ KV Academy Original

Q8. Explain why a non-volatile solute lowers the vapour pressure of a solution.📘 Ch. 1 — Solutions⭐ KV Academy Original

Q9. 18 g glucose (M=180 g mol⁻¹) is dissolved in 180 g water. Calculate the molality.📘 Ch. 1 — Solutions⭐ KV Academy Original

Q10. Compare concentrated and dilute solutions in terms of vapour pressure and boiling point.📘 Ch. 1 — Solutions⭐ KV Academy Original

Q1. Solve: x/5 = 7/10.

Q2. Find y if 9/14 = y/28.

Q3. If 4 pens cost ₹36, find the cost of 7 pens using proportion.

Q4. A map uses a scale of 1:50,000. A road is 6 cm on the map. Find its actual length in km.

Q5. A class has boys:girls = 5:7. If the total is 36 students, find the number of boys and girls using cross multiplication.

Q1. Rationalise 1/√5.

Q2. Rationalise 3/(2√7).

Q3. Rationalise 5/(√6−√2).

Q4. Simplify 1/(√5+√3) by rationalising the denominator.

Q5. Rationalise and simplify 2/(√7−√5).