Class 7 questions with answers

15 questions, 1 with pictures · One lakh and the boundaries between digit lengths · Sizing a large quantity against a familiar one · Indian place value notation: commas and number names · Building a number from tens, hundreds and thousands · Lakhs and crores against millions and billions · Exact and approximate values, and nearest neighbours · Making a multiplication easier by regrouping its factors · How many digits a product can have

15 questions · An arithmetic expression and the value it stands for · Comparing expressions by the numbers they stand for · Comparing without evaluating, by tracking the changes · Splitting an expression into its terms · Terms may be added in any order and any grouping · Brackets say which part is worked out first · What happens to the signs when brackets come out · A multiple of a sum is the sum of the multiples

15 questions, 2 with pictures · Splitting a tenth into ten equal parts · Splitting a unit into ten equal parts · Adding and subtracting decimals by place · When a zero changes the value and when it does not · Writing a plain count of tenths or hundredths in decimal form · Placing decimals on a number line and comparing them · Converting between units with a decimal point · Numbers written with a point that are not decimals · The decimal point and the places on either side of it

15 questions, 4 with pictures · A letter standing in for a number · The simplest form, and when two expressions are equal · Turning a described situation into an expression · Relationships between positions in a grid · Finding the value of an expression · Like terms and unlike terms · Opening brackets in an algebraic expression · Writing an expression for a pattern · Writing 4 x n as 4n

15 questions, 12 with pictures · What happens where two lines cross · Lines that cross at right angles · Lines that never meet · Building parallels and perpendiculars · Angles on opposite sides of the transversal · One line crossing two others · Angles in matching positions · The two angles between the lines on one side

15 questions, 1 with pictures · Numbers that describe an arrangement · The sequence that counts rhythms · Whether a difference comes out odd or even · Whether a product comes out odd or even · Whether a sum comes out odd or even · Expressions that are always odd, always even, or neither · What the sums around a grid must obey · The shape a magic square is forced into · Letters standing for digits

15 questions, 9 with pictures · Building a triangle from two angles and the side between them · Building a triangle from two sides and the angle between them · Heights of a triangle, and the names its shape earns · The angle made when a side is extended · The three angles of any triangle add to 180 degrees · What a triangle is and how it is named · Why two arcs find the third corner · What the two circles do when a triangle is impossible · When three lengths can be the sides of a triangle

15 questions · A fraction of a fraction, and what is left over · Multiplying a fraction and a whole number · Multiplying two fractions · Cancelling common factors, and lowest form · Whether a product is larger or smaller than what was multiplied · Brahmagupta's formula for dividing fractions · Choosing the operation, and which way round the division goes · Division read as a multiplication question, and the reciprocal · Whether a quotient is larger or smaller than the dividend

15 questions, 8 with pictures · Which measurements fix a figure · What it means for two figures to be congruent · The SSS condition · Writing a congruence the right way round · The RHS condition for right triangles · The SAS condition and the included angle · The angle conditions ASA and AAS · Angles opposite equal sides · Finding the equal parts a figure already gives

15 questions · Two numbers from their sum and their difference · A movement carries a size and a direction · Signed quantities in a situation · The token model for multiplication · The pattern that extends the tables past zero · Division of integers · The sign of a product of several integers · The sign of a product of two integers · Commutative, associative and distributive

15 questions · Common factors, and the highest of them · The HCF: common primes, fewest occurrences · When the HCF or the LCM is one of the two numbers · Prime factorisation, and why the route does not matter · Common multiples, and the lowest of them · Every factor is a subpart of the prime factorisation · The LCM: every prime, most occurrences · One ladder that gives both the HCF and the LCM · The HCF times the LCM is the product

15 questions · Carrying a decimal through a situation · When a product is larger, and when it is smaller · Multiplying and dividing by 10, 100 and 1000 · A decimal is a sum of place value parts · Carrying a long division past the ones place · Where the point goes in a product · Getting rid of a decimal in the divisor · Divisions that never end · When a quotient comes out bigger than the dividend

15 questions, 3 with pictures · What makes a question statistical · The mean as a fair share · What the data does and does not justify · The median of sorted data · What counts as a value · Outliers, and which measure moves · The scale a graph is drawn to · The spread of the data · Reading a clustered bar graph

15 questions, 13 with pictures · Bisecting an angle · What the perpendicular bisector is made of · Which angles a ruler and compass reach · Which radii must be equal, and which need not · A right angle at a point that is already fixed · Angles that fill the space around a point · Copying an angle · A parallel line from a copied angle · Tiling a grid with 2x1 tiles

15 questions · Turning a situation into an equation · Using a known equation without solving it · Checking, and what counts as a solution · The same operation on both sides · Removing a factor or a divisor · Unknowns on both sides · Equations with brackets · Moving a term across the equals sign · What a balanced scale asserts

15 questions · How acids and bases behave: sour, bitter, slippery, and the limits of taste · Red rose extract: red in acidic, green in basic · Litmus: what it is and what its two colour changes mean · Sorting substances into acidic, basic and neutral · Turmeric paper: red in basic, unchanged in both acidic and neutral · Preparing a natural indicator from a flower · Neutralisation: what an acid and a base make together · Olfactory indicators: when the clue is a smell, not a colour · Neutralisation put to work: ant bites, soil and factory waste · The secret message: choosing a writing liquid and a spray to match · P.C. Ray and the writing of India's chemical history

15 questions, 5 with pictures · The electric cell and its two terminals · A battery: cells joined positive terminal to negative terminal · The LED: no filament, and current in one direction only · The incandescent lamp: filament, terminals, and what 'fused' means · The electrical circuit: a complete path for the current · The switch: closing and breaking the circuit · Circuit symbols and the circuit diagram · Conductors and insulators, and why both are needed · Using a circuit as a test: finding the fault and identifying components · Where electricity comes from, what it is used for, and what may be experimented with

15 questions, 1 with pictures · Lustre and hardness, and the metals that break the pattern · Ductility: drawn into wires · Malleability: beaten into sheets, and what brittle means · Sonority: the ringing sound of a metal · Conduction of heat: why vessels are metal and handles are not · Conduction of electricity: good conductors and poor conductors · Metals with air and water: oxides that are basic · Non-metals: acidic oxides, and what counts as an element · Rusting: what has to be present, and how it is prevented · Properties decide uses: metals, non-metals and alloys in everyday life

15 questions, 4 with pictures · Noticing a change, and the senses that notice it · A physical change: the appearance alters, the substance does not · Changes that can be reversed and changes that cannot · A chemical change: one or more new substances are formed · Turning lime water milky: the test for carbon dioxide · Rusting is a chemical change · Combustion: reacting with oxygen, giving out heat and light · Ignition temperature and the three requirements for combustion · A burning candle: both changes in one process · Weathering and erosion: slow natural changes in rock · Desirable and undesirable changes, and changes with long-term effects

15 questions, 3 with pictures · Adolescence: the stage between childhood and adulthood · Meeting nutritional needs during adolescence · The physical changes: height, build, voice, hair and skin · Secondary sexual characteristics, and what puberty names · The menstrual cycle, and the myths around it · Emotional and behavioural changes, and what to do with them · Hormones: why the changes happen when they do · Personal hygiene and menstrual hygiene · Physical activity, and a balanced social life online and in person · Avoiding harmful substances: learning to say NO · Variation between individuals is completely normal

15 questions, 9 with pictures · Conduction, and Good and Poor Conductors of Heat · Convection in Liquids and Gases · Radiation: Heat Transfer Without a Medium · Unequal Heating of Land and Water: Sea Breeze and Land Breeze · The Water Cycle · Infiltration, Groundwater and Aquifers

15 questions, 1 with pictures · Devices for Measuring Time, Old and New · The Simple Pendulum and its Time Period · The SI Unit of Time and How Units are Written · Deciding Which of Two Objects is Faster · Calculating Speed, Distance and Time · Uniform and Non-uniform Linear Motion

15 questions, 2 with pictures · Digestion in Other Animals: Ruminants and Birds · Where Digestion Begins: Mouth, Food Pipe and Stomach · The Intestines: Where Food Is Digested, Absorbed and Finished With · How We Breathe: The Respiratory System and the Mechanism · Breathing in Other Animals: Gills, Skin and Different Lungs · Gas Exchange, and Why Breathing Is Not Respiration

15 questions · What a Plant Needs in Order to Grow · What the Air Supplies and What the Plant Gives Back · Leaves, Chlorophyll and the Starch Test · Plants Respire Too, and Why That Is Not Photosynthesis Backwards · Photosynthesis in One Equation, and the Pores That Let the Gases Through · Transport: the Xylem Carries Water Up, the Phloem Carries Food Out

15 questions, 3 with pictures · Luminous and Non-Luminous Objects · Light Travels in a Straight Line · Transparent, Translucent and Opaque Materials · Shadow Formation · Reflection and the Image in a Plane Mirror · The Pinhole Camera, the Periscope and the Kaleidoscope

15 questions, 5 with pictures · The Apparent Motion of the Sun, the Moon and the Stars · Rotation of the Earth, and Day and Night · Revolution and the Changing View of the Night Sky · The Tilt of the Axis and the Seasons · Solar Eclipse · Lunar Eclipse