In this page, each and every question originate with a step-wise solution. Moreover, it is a perfect guide to help you to score good marks in CBSE board examination. With the aim of imbibing skills and hard work among the students, the 10th class maths NCERT solutions have been designed.

Real Numbers Class 10 has total of four exercises consists of 18 Problems. Other topics included are Fundamental Theorem of Arithmetic, important properties Ncert Solutions Class 10th 1.1 Answer of positive integers, fraction Ncert Solutions Class 10th Maths Tiwari Academy Res to decimals and decimals to a fraction. Polynomials Class 10 has total of four exercises consists of 13 Questions. Problems related Ncert Solutions Class 10th 1.1 Answer to finding polynomials, Properties zeros and coefficient, long division of polynomials, finding a quadratic polynomial, finding zeros of polynomials are scoring topics.

Pair of Linear Equations Class 10 has total of seven exercises consists of 55 Problems. The ncert solutions class 10th 1.1 answer will be based on Answer 1.1 10th Solutions Ncert Class concepts like linear equations in two variables, algebraic methods for solving linear equations, elimination method, cross-multiplication method Time and Work, Age, Boat Stream and equations Ncert Solutions Class 10th 1.1 Answer reducible to a pair of linear equations these answers will give you ease in solving problems related to linear equations.

Quadratic Equations Class 10 has total of four exercises consists of 24 Problems. The Questions are related to find roots of quadratic equations and convert world problem into quadratic equations Ncert Solutions Class 10th 1.1 Answer are easily scoring topics in board exams. Arithmetic Progressions Class 10 has total of four exercises consists of 49 Ncert solutions class 10th 1.1 Ncert Solutions Class 10th 1.1 Answer Ncert Solutions Class 10th 1.1 Answer answer. Triangles Class 10 has total of six exercises consists of 64 Problems.

The Questions are Ncert Solutions Of Class 10th Geography Chapter 6 Min based on properties of triangles and 9 important theorems which are important in scoring good marks in CBSE Class 10 Exams. Coordinate Geometry Class 10 has total of four exercises consists of Ncert Solutions Class 10th 1.1 Answer 33 Problems. The Questions related to finding the distance between two points using their coordinates, Area of Triangle, Line divided in Ratio Section Formula are Ncert Solutions Class 10th 1.1 Answer Ncert Solutions Class 10th 1.1 Answer important models in class 10 boards.

Introduction to Trigonometry Class 10 has total of four exercises consists of 27 Problems. The questions based on trigonometric ratios of specific angles, trigonometric identities and trigonometric ratios of complementary angles are the main topics you will learn in this chapter. Some Applications of Ncert Solutions Class 10th 1.1 Answer Ncert Solutions Class 10th 1.1 Answer Trigonometry Class 10 has one exercise consists of 16 Problems. In this chapter, you will be studying about real life applications of trigonometry and questions are based on the practical applications of trigonometry.

Circle Class 10 has total of two exercises ncert solutions class 10th 1.1 answer of Ncert Solutions Class 10th 1.1 Answer Ncert Solutions Class 10th 1.1 Answer 17 Problems. Understand concepts such ncert solutions class 10th 1.1 answer tangent, secant, number tangents from a point to a circle and. Constructions Class 10 has total of four exercises consists of 14 Problems. The Questions ncert solutions class 10th 1.1 answer based on drawing tangents and draw Ncert Solutions Class 10th 1.1 Answer Ncert Solutions Class 10th 1.1 Answer similar triangles are important topics.

Areas Related to Circles Class 10 has total of three exercises consists of 35 Problems. Surface Areas and Volumes Class Ncert Solutions Class 10th 1.1 Answer Ncert Solutions Class 10th 1.1 Answer 10 has total of five exercises consists of 36 Problems. The ncert solutions class 10th 1.1 answer are based on finding areas and volumes of different solids such as cube, cuboid and cylinder, frustum, combination of solids.

Statistics Class 10 has total of four exercises consists of 25 Problems. Problems related to find mean, mode or median of grouped data will be studied in this chapter. Solve questions by understanding the concept of cumulative frequency distribution. Probability Class 10 has total of two exercises consists of 30 Problems.

Questions based on the concept of theoretical probability will be Ncert Solutions Class 10th 1.1 Answer Class 10th Solutions Answer Ncert 1.1 Ncert Solutions Class 10th 1.1 Answer studied in this chapter. Class 10 maths is having 15 chapters to learn by the students in this academic year. NCERT Solutions are designed in a way that every student can quickly understand the concept into their minds and clarifies all their doubts within a few seconds. The book is self-explanatory and helps students to innovate and explore in maths.

What are the best reference books for class 10 CBSE? If you have any questions, ping us through the comment section below and we will get back to you as soon as possible. RD Sharma Class 12 Solutions. Watch Youtube Videos.

Main point:

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You suggest full means to run kits, for it was the palm full of tender amateurs who many desirous me to take a thrust as well soolutions set up my initial boat, as good as opposite tools that can be depending upon a kind of automotive we buy, she Ncert Solutions Class 10th 1.1 Answer Ncert Solutions Class 10th 1.1 Answer was a impulse asking for the some-more comfy vessel.

Carbon dioxide is getting oxidised c. Carbon is getting oxidised d. Lead oxide is getting reduced i a and b ii a and c iii a , b and c iv all Solution: i a and b.

Question 2 The above reaction Ncert Solutions Class 10th 1.1 Answer is an example of a i. Combination reaction ii. Double displacement reaction iii. Decomposition reaction iv. Displacement reaction Solution: iv Displacement reaction. Question 3 What happens when dilute hydrochloric acid is added to iron fillings? Tick the correct answer. Hydrogen gas and iron chloride are produced b. Chlorine gas and Ncert Solutions Class 10th 1.1 Answer iron hydroxide are produced c.

No reaction takes place d Iron salt and water are produced Solution: Hydrogen gas and iron chloride are produced. Solution: Ncert Answer Solutions 10th Class 1.1 An equation for a chemical reaction is an equation in which the number of atoms for each element in the reaction and the total charge is the same for both the reactants and the products.

In other words, the mass and the charge are balanced on both sides of the reaction. Hydrogen gas combines with nitrogen to form ammonia b. Hydrogen sulfide gas burns in air to give water and sulfur dioxide c.

Barium chloride reacts with Aluminium sulfate to give Aluminium chloride and a precipitate of barium sulphate d. Potassium metal reacts with water to give a potassium Ncert Solutions Class 10th 1.1 Answer Ncert Solutions Class 10th 1.1 Answer Ncert Solutions Class 10th 1.1 Answer Ncert Solutions Class 10th 1.1 Answer hydroxide and hydrogen gas Solution: a. Question 6 Balance the following chemical equations. Question 8 Write the balanced chemical equation for the following and identify Ncert Solutions Class 10th 1.1 Answer the type of reaction of each case.

Solution: a. Question 9 What is meant by exothermic and endothermic reactions? Solution: An exothermic reaction is Ncert Solutions Class 10th 1.1 Answer one that releases heat. If 1 mole of N 2 molecule reacts with 1 mole of O 2 molecule, the heat of KJ has to Ncert Solutions Class 10th 1.1 Answer Ncert Solutions Class 10th 1.1 Answer be supplied to initiate the reaction to give 1 mole of NO molecule. This means that the bonds between N � N and O � O are so strong that they do not break easily.

N 2 has triple covalent bond between the two N atoms. O 2 has a Ncert Solutions Class 10th 1.1 Answer double covalent bond. Thus energy has to be put into the reaction to break the Ncert Solutions Class 10th 1.1 Full strong bonds.

Thus the above reaction is a good example Ncert Solutions Class 10th 1.1 Answer of an endothermic reaction. Solution: During respiration, glucose combines with oxygen in the cells of our body to form carbon dioxide and water along with the production of energy.

Write equations for decomposition reactions. Solution: Essentially, decomposition reactions are the opposite of combination reactions. A compound decomposes i. Most Ncert Solutions Class 10th 1.1 Answer decomposition reactions are endothermic.

Another example of decomposition reaction is the heating of calcium carbonate sea shells, chalk :. Question 12 Write one equation each for decomposition reactions in which energy is supplied in the form of heat, light or electricity? Solution: When calcium carbonate is heated, it decomposes to give Ncert Solutions Class 10th 1.1 Answer calcium oxide and carbon dioxide:.

Write relevant equations for the above? Solution: The difference between the displacement and double displacement reactions is that in a displacement reaction one element displaces another by virtue of it being more reactive whereas in a double displacement two anions and two cations switch places between two compounds respectively. Thus Zn displaces Cu in the salt form.

Zn is more reactive than Cu. Question 14 In the refining of Answer Solutions Ncert 10th 1.1 Class Ncert Solutions Class 10th 1.1 Answer silver, the recovery of silver from silver nitrate solution involves displacement by copper metal. Explain by giving examples: Solution: A precipitation reaction is a reaction Ncert Solutions Class 10th 1.1 Answer in which soluble ions in separate solutions are mixed together to form an insoluble compound that settles out of solution as a solid.

This insoluble Ncert Solutions Class 10th 1.1 Answer compound is called a precipitate. An example of a precipitation reaction Aqueous silver nitrate AgNO3 , when added to a solution containing potassium chloride KCl , precipitates Ncert Solutions Class 10th 1.1 Answer a white solid, and silver chloride is observed.

Solution: The shiny brown colored element X is copper metal Cu. When copper metal is heated Ncert Solutions Class 10th 1.1 Answer in air, it forms a black colored compound copper oxide. So, the black colored compound is the copper oxide or copper II oxide, CuO.

Question Ncert Solutions Class 10th 1.1 Answer 17 Why do we apply paint on iron articles? Solution: Rust is a soft and porous substance, which gradually falls from the surface of an iron object, and then the iron below starts rusting. Thus, rusting of iron or corrosion of iron is a continuous process which, if not prevented Ncert Solutions Class 10th 1.1 Answer Ncert Solutions Class 10th 1.1 Answer in time, eats up the whole iron object.

So, when we apply paint on iron articles it reduces the rusting of iron. Question 18 Oil and fat containing food items are flushed with nitrogen. Solution: Packaging fat and oil containing foods in nitrogen gas can prevent rancidity. When the fat Ncert Solutions Class 10th 1.1 Answer and oil present in food materials gets oxidised in air , their oxidation products have an unpleasant smell and taste. When it is surrounded by Class Solutions 1.1 10th Ncert Answer unreactive gas, nitrogen, there is no oxygen of air to cause its oxidation and make it rancid.

Question 19 Explain the following terms with one Ncert Solutions Class 10th 1.1 Answer Ncert Solutions Class 10th 1.1 Answer example each. Corrosion b. Rancidity Solution: a. Corrosion is the process in which metals are eaten up gradually by the action of air, moisture or a chemical on their surface. Corrosion is caused mainly by the oxidation of metals by the oxygen of air. Example: Rusting of iron is the most common form of corrosion.

This is called rusting of iron. The condition produced by aerial oxidation of fat and oil in food which is Ncert 10th Class 1.1 Solutions Answer marked by an unpleasant smell and taste is called rancidity. Example: Rancidity can be retarded by keeping food in a refrigerator. The refrigerator has Ncert Solutions Class 10th 1.1 Answer a low temperature inside it. When the food is kept in a refrigerator, the oxidation of fat and oil in it is slowed down due to low temperature. So, the development of rancidity due to oxidation is retarded.

Question 20 Why should a magnesium ribbon be Ncert Solutions Class 10th Exercise 4.3 Word cleaned before burning in Ncert Solutions Class 10th 1.1 Answer air? Solution: To remove the oxide layer and facilitates rapid burning. Question 21 Write the balanced equation for the following chemical reactions. Question 22 Write Ncert Solutions Class 10th 1.1 Answer a balanced chemical equation and state symbols for the following reactions.

Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride b. Sodium hydroxide solution in water reacts with hydrochloric acid solution in water to produce sodium chloride solution and water. Question 24 Why does the colour of copper sulphate solution change when an iron nail is dipped into it?

Solution: In this Ncert Solutions Class 10th 1.1 Answer reaction, iron displaces copper from copper sulphate solution. The deep blue colour of copper sulphate solution fades due to the formation of light green solution 10th Ncert Solutions Answer Class 1.1 of iron sulphate. A red-brown coating of copper metal is formed on the surface of the iron metal. This displacement reaction occurs because iron is more reactive than copper. Question 25 Identify the substances that are oxidised and the substances that are reduced in the following reactions.

The addition of oxygen is Called oxidation. So the substance that is oxidized is sodium Na. In this reaction, copper oxide CuO gives the oxygen required for Ncert Solutions Class 10th 1.1 Answer the oxidation of hydrogen; therefore, copper oxide is the oxidizing agent.

Hydrogen is responsible for removing oxygen from copper oxide; therefore, hydrogen is the reducing agent here. Question 1. When crystals of lead nitrate are heated strongly in a dry test tube a crystals immediately melt b a brown residue Ncert Solutions Class 10th 1.1 Answer is left c white fumes appear in the test tube d a yellow residue is left Answer: b Pungent smelling, brown fumes are evolved due to NO 2 gas and brown coloured residue of lead oxide PbO is left.

Question 2. A dilute ferrous sulphate solution was gradually added to Ncert Solutions Class 10th 1.1 Answer the beaker containing acidified permanganate solution.

The light purple colour of the solution fades and finally disappears. Which of the following is the correct explanation Ncert Solutions Class 10th 1.1 Answer for the observation? In acidic medium, KMnO 4 oxidises ferrous sulphate to ferric sulphate. Question 3. Dilute hydrochloric acid is added to granulated zinc 1.1 Ncert Solutions Class Answer 10th Ncert Solutions Class 10th 1.1 Answer taken in a test tube. The following observations are recorded. Point out the correct observation.

HCl to form zinc chloride and bubbles of colourless and Ncert Solutions Class 10th 1.1 Answer odourless hydrogen gas is evolved. Question 4. When a magnesium ribbon is burnt in air, the ash formed is a black b white c yellow d pink Answer: b When a Mg ribbon is burnt in air, the ash formed is of magnesium oxide which is white in colour. Question Answer 1.1 Class 10th Solutions Ncert 5. Three beakers labelled as A, B and C each containing 25 mL of water were taken.

A small amount of NaOH, anhyd. It was Ncert Solutions Class 10th 1.1 Answer observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas, in case of beaker C, Ncert Solutions Class 10th 1.1 Answer the temperature of the solution falls. In beakers A and B, exothermic process has occurred. In beakers A and B, endothermic process has occurred. In Ncert Solutions Class 10th 1.1 Answer beaker C, the exothermic process has occurred.

In beaker C, endothermic process has occurred. Question 6. Which of the following will be required to identify the gas evolved when dilute hydrochloric acid reacts with zinc metal? HCl, zinc metal forms zinc chloride and hydrogen gas is evolved. Presence of hydrogen gas can be checked by a burning splinter because H 4 gas burnt in a splinter with a pop sound.

Question 7. And the colour of the solution fades away. This is an example of displacement reaction. Question 8. Thus every real number is either a rational number or Ncert Solutions Class 10th 1.1 Answer an irrational number.

In either case, it has a non�terminating decimal representation. In the case of rational numbers, the decimal representation is repeating including repeating Ncert Solutions Class 10th 1.1 Answer Ncert Solutions Class 10th 1.1 Answer Ncert Solutions Class 10th 1.1 Answer zeroes and if the decimal representation is non�repeating, it is an irrational number. From the above discussion we may conclude that: To every real number Ncert Solutions Class 10th 1.1 Answer there corresponds a unique point on the number line and conversely, to every point on the number line there corresponds a real number.

We have studied the following points: 1. The divisor at this stage will be HCF a, b. The Fundamental Theorem of Arithmetic: Every composite number can be expressed factorized as a product of primes and this factorization is unique, apart from the order in which the prime factors occur. Solution Ex 1.

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