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Science Class 10 Chapter 5 Question Answer

Periodic Classification of Elements Solutions For All Chapters Science 10 NCERT TEXTBOOK Solutions for Class 10 Science Question 1 Which of the following statements is not a correct statement about the trends wlien going from left to right across the periods of Periodic Table. (a) The elements become less metallic in nature. (b) The number […]

Science Class 10 Chapter 4 Question Answer

Carbon and its Compounds Solutions For All Chapters Science 10 CBSE NCERT TEXTBOOK Solutions for Class 10 Science Question 1 Ethane, with the molecular formula C2H6 has (a) 6 covalent bonds (b) 7 covalent bonds (c) 8 covalent bonds (d) 9 covalent bonds Answer: (b) 7 covalent bonds. Question 2 Butanone is a four-carbon compound […]

Science Class 10 Chapter 3 Question Answer

Metals and Non-metals Solutions For All Chapters Science 10 CBSE NCERT TEXTBOOK Solutions for Class 10 Science Question 1. Which of the following pairs will give displacement reactions ? (a) NaCl solution and copper metal. (b) MgCl2 solution and aluminium metal. (c) FeSO4 solution and silver metal. (d) AgNO3 solution and copper metal. Answer: (d) […]

Improvement in Food Resources Science Class 9 Chapter 12 Question & Answer

Solutions For All Chapters Science Class 9 Questions From NCERT Textbook Question 1. Explain any one method of crop production which ensures high yield. Answer: One method used for crop production which ensures high yield is plant breeding. It is the science involved in improving the varieties of crops by breeding plants. The plants from […]

Science Class 10 Chapter 2 Question Answer

Acids, Bases and Salts Solutions For All Chapters Science 10 CBSE NCERT TEXTBOOK Solutions for Class 10 Science Question 1 A solution turns red litmus blue, its pH is likely to be (a) 1 (b) 4 (c) 5 (d) 10 Answer: (d) 10 Question 2 A solution reacts with crushed-egg shells to give a gas […]

Science Class 9 Chapter 14 Question Answer

Natural Resources Solutions For All Chapters Science Class 9 Questions From NCERT Textbook for Class 9 Science Question 1. Why is the atmosphere essential for life? Answer: Atmosphere is essential for life because of the following masons : (i) It keeps the average temperature of the earth fairly steady during the day and even during […]

Science Class 9 Chapter 13 Question Answer

Why Do We Fall Ill Solutions For All Chapters Science Class 9 Questions From NCERT Textbook for Class 9 Science Question 1. How many times did you fall ill in the last one year? What were the illnesses? (a) Think of one change you could make in your habits in order to avoid any of/ […]

Sound Science Class 9 Chapter 11 Question & Answer

Solutions For All Chapters Science Class 9 Questions From NCERT Textbook  Question 1. What is sound and how is it produced ? Answer: Sound is mechanical energy which produces a sensation of hearing. When an Object is set into vibrations, sound is produced. 2. Describe with the help of a diagram, how compressions and rarefactions are […]

Science Class 10 Question Answer CBSE

Chapter 1 Chemical Reactions and Equations Chapter 2 Acids Bases and Salts Chapter 3 Metals and Non-Metals Chapter 4 Carbon and Its Compounds Chapter 5 Life Process Chapter 6 Control and Coordination Chapter 7 How do Organisms Reproduce? Chapter 8 Heredity Chapter 9 Light Reflection and Refraction Chapter 10 Human Eye and Colourful World Chapter […]

Science Class 10 Chapter 1 Question Answer

Chemical Reactions and Equations Solutions For All Chapters Science 10 CBSE NCERT TEXTBOOK Solutions for Class 10 Science Question 1 Which of the given statements about the reaction below are incorrect? a. Lead is getting reduced b. Carbon dioxide is getting oxidised c. Carbon is getting oxidised d. Lead oxide is getting reduced (i) (a) […]

Work and Energy Science Class 9 Chapter 10 Question & Answer

Solutions For All Chapters Science Class 9 Questions From NCERT Textbook  Q1. Look at the activities listed below. Reason out whether or not work is done in the light of your understanding of the term ‘work’. (a) Suma is swimming in a pond. (b) A donkey is carrying a load on its back. (c) A […]

Force & Laws of Motion Science Class 9 Chapter 8 Question Answer

Solutions For All Chapters Science Class 9 Questions from NCERT Textbook Question 1. An object experiences a net zero external unbalanced force. Is it possible for the object to be travelling with a non-zero velocity? If yes, state the conditions that must be placed on the magnitude and direction of the velocity. If no, provide […]

Science Class 9 Chapter 7 Question Answer

Diversity in Living Organisms Solutions For All Chapters Science Class 9 Questions From NCERT Textbook for Class 9 Science Question 1. What are the advantages of classifying organisms? Answer: Advantages of classification: 1. Better categorization of living beings based on common characters. 2. Easier study for scientific research. 3. Better understanding of human’s relation and […]

Tissues Science Class 9 Chapter 6 Question Answer

Solutions For All Chapters Science Class 9 Questions From NCERT Textbook Question 1. Define the term “tissue”. Answer: Group of cells that are similar in structure and perform same function is called a tissue. Question 2. How many types of elements together make up the xylem tissue? Name them. Answer: The xylem is made up […]

The Fundamental Unit of Life Science Class 9 Chapter 5 Question Answer

Solutions For All Chapters Science Class 9 Questions From NCERT Textbook  Question 1. Make a comparison and write down ways in which plant cells are also different from animal cells. Answer: Question 2. How is prokaryotic cell different from a eukaryotic cell? Answer: Prokaryotic cell is generally smaller in size (1-10 pm), nuclear region is […]

Structure of The Atom Science Class 9 Chapter 4 Question Answer

Solutions For All Chapters Science Class 9 Questions from NCERT Text Book Question 1. Compare the properties of electrons, protons and neutrons. Answer: Electrons Protons Neutrons Negatively charged. Positively charged No charge Mass is negligible (1/1800 times of protons). Mass is 1 a.m.u. Mass is 1 a.m.u. Get attracted towards +ve charge. Get attracted towards […]

Atoms and Molecules Science Class 9 Chapter 3 Question Answer

Solutions For All Chapters Science Class 9 Question 1. A 0.24 g sample of compound of oxygen and boron was found by analysis to contain 0.096 g of boron and 0.144 g of oxygen. Calculate the percentage composition of the compound by weight. Answer: Boron and oxygen compound —> Boron + Oxygen 0.24 g —> […]

Is Matter Around Us Pure Science Class 9 Chapter 2 Question Answer

Solutions For All Chapters Science Class 9 Question 1. Which separation techniques will you apply for the separation of the following? (a) Sodium chloride from its solution in water. (b) Ammonium chloride from a mixture containing sodium chloride and ammonium chloride. (c) Small pieces of metal in the engine oil of a car. (d) Different […]

Matter in Our Surroundings Science Class 9 Chapter 1 Question Answer

Solutions For All Chapters Science Class 9 Question 1. Convert the following temperatures to the Celsius scale. (a) 293 K (b) 470 K. Answer: (a) 293 K into °C 293 – 273 = 20°C (b) 470 K into °C 470 – 273 = 197°C Question 2. Convert the following temperatures to the Kelvin scale. (a) […]

Science Class 9 Question & Answer

Chapter 1 – Matter in Our Surroundings Chapter 1 class 9 Science Chapter 2 – Is Matter Around Us Pure Chapter 2 class 9 Science Chapter 3 – Atoms and Molecules Chapter 3 class 9 Science Chapter 4 – Structure of the Atom Chapter 4 class 9 Science Chapter 5 – The Fundamental Unit of […]

Maths Class 7 Exercise 12.4 Question Answer

Solutions For All Chapters Maths Class 7 NCERT Solutions for Class 7 Maths Chapter 12 Algebraic Expressions Ex 12.4 Ex 12.4 Class 7 Maths Question 1. Observe the patterns of digits made from line segments of equal length. You will find such segmented digits on the display of electronic watches or calculators. If the number […]

Maths Class 7 Symmetry Chapter 12 Exercise 12.3 Question Answer

Solutions For All Chapters Maths Class 7 Ex 12.3 Class 7 Maths Question 1. Name any two figures that have both line symmetry and rotational symmetry. Solution: English alphabet H and O both have line symmetry and rotational symmetry. Ex 12.3 Class 7 Maths Question 2. Draw, wherever possible, a rough sketch of (i) a […]

Maths Class 7 Symmetry Chapter 12 Exercise 12.2 Question Answer

Solutions For All Chapters Maths Class 7 Ex 12.2 Class 7 Maths Question 1. Which of the following figures have rotational symmetry of order more than 1? Solution: The figure (a), (b), (d), (e) and (f) have rotational symmetry more than 1. Question 2. Give the order of rotational symmetry for each figure: Solution: Let […]

Maths Class 7 Symmetry Chapter 12 Exercise 12.1 Question Answer

Solutions For All Chapters Maths Class 7 Ex 12.1 Class 7 Maths Question 1. Copy the figures with punched holes and find the axis of symmetry for the following: Solution: The axis of symmetry is shown by following line. Ex 12.1 Class 7 Maths Question 2. Give the line(s) of symmetry, find the other hole(s): […]

Maths Class 7 Exercise 11.4 Question Answer

Solutions For All Chapters Maths Class 7 NCERT Solutions for Class 7 Maths Chapter 11 Perimeter and Area Ex 11.4 Ex 11.4 Class 7 Maths Question 1. A garden is 90 m long and 75 m broad. A path 5 m wide is to be built outside and around it. Find the area of the […]