NCERT solutions for Science

 NCERT solution > Class 8 > Science  NCERT solution for class 8 || Science || Chapter 15 - Some natural phenomena Chapter 15 Some natural phenomena  Exercise  Select the correct option in question 1 and 2  Q1. Which of the following cannot be charged easily by friction . a) A plastic scale   b)A copper rod  c) An inflated balloon  d)  A woolen cloth   Answer- A copper rod  Q2. When a glass rod is rubbed with a piece of silk cloth the rod  a)  Cloth both acquire positive charge  b) Becomes positively charged while the cloth has  negative charge. c) And the both cloth  acquire negative charge . d) Becomes negatively charged while the cloth has a positive charge   Answer -b) Becomes positively charged while the cloth has  negative charge. Q3. Write T against true and F against false in the following statement  a) Like charges attract each other  b) A charged glass rod a...

  NCERT solution > Class 8 > Science  NCERT solution for class 8 || Science || Chapter 14 -Chemical effects of electric current Chapter 14 -Chemical effects of electric current  Exercise Q1. Fill in the blanks  a) Most liquids that conduct electricity are solutions of acids and bases and salts   b) The passage of an electric current through a solution causes chemical effects . c) If you pass current through copper sulphate solution copper gets deposited on the plate connected to the negative terminal of the battery. d) The process of depositing a layer of any desired metal on another material by means of electricity is called electroplating   Q2. When the free ends of a tester are dipped in a solution the magnetic needle shows deflection can you explain the reason ?  Answer- The free end of the tester are dipped in the solution of magnetic needle shows deflection because the magnetic needle indicates the electric current is flowing t...

  NCERT solutions  >Class 9 > Science  Chapter 13- Why do we fall ill   Page number 178  Q1. State any two conditions essential for good health ?  Answer -  Two condition essential for good health are  A healthy person is free from all kind of disease  A person should be physically mentally and socially fit is called healthy . Q2. State any two conditions essential for being free of disease ?  Answer - Two conditions essential for being free of disease are  To keep personal hygiene and cleanliness  To get sufficient and balanced food to keep body free from disease  Q3 . Are the answers to the above questions necessarily the same or different why ? Answer-  Both question above mentions have different answer because by the term of health mean mental, physical and social health while free of disease is only related to physical health Page number 180  Q4. List any three reasons why you would think that you...

  NCERT solution > class 6 > Science  Chapter 13 - Fun with magnets  Exercise  Q1. Fill in the blanks in the following.  i) Artificial magnet are made in different shapes such as  H orse shoe and cylindrical ii) The materials which are attracted towards a magnet are called Magnetic materials  iii) Paper is not Magnetic material . iv) In olden days sailor used to find direction by suspending a piece of Magnet   v) A magnet always has Two poles.  Q2. State whether the following statements are true or false  i) Cylindical magnet has only one pole  ii) Artificial magnets were discovered in Greece . iii) Similar poles of a magnet repel each other . iv) Maximum iron filings stick in the middle of the bar magnet when it is brought them near.  v) Bar magnets always point towards north south direction. vi) Compass can be used to find east west direction at any place . vii) Rubber is a magnetic material . Answer - i) fals...

 NCERT solution > Class 6 > Science    NCERT solution for class 6 || Science || Chapter 9 - The living organisms characteristics and habitats Chapter 9 - The living organisms characteristics and habitats  Exercise  Q1. What is a habitat ?  Answer - The surroundings where the plants and animals live is called their habitat . Different plants and animals live in different habitats ex - In terrestrial habitat  land animals live ,In  aquatic habitat water animals live  etc . Q2. How are cactus adapted to survive in a desert  Answer - In following way a cactus adapted to survive in desert   There leaves are in the form of spines reduce transpiration  Stem is thick fleshy and green in colour for photosynthesis   Stem covered with waxy coating  Their roots are go very deep into the soil for absorbing water  Q3. Fill ups the blanks  a) The presence of specific features which enables a plant or ...

NCERT  Solution >Class 9 > Science  NCERT solution for class 9//Science -  Chapter 12 - Sound Chapter 12 -Sound  Page number 162  Q1. How does the sound produced by A vibrating object in a medium reach your ear?  Answer- When an object vibrate  the particles of the medium around it vibrating object from its equilibrium position after displacing the adjacent particles to all over the medium it comes back in its original position this process continuous in a medium the sound reaches  your ear Page number 163  Q2. Explain how sound is produced by your school bell?  Answer - When the bell continuous to move forward and backward then it create the series of the compression and rarefaction and it produced sound Q3. Why are sound waves called mechanical waves ?  Answer- Sound rays propagate only through the material medium so it is called mechanical waves Q4. Suppose you and your friend are on the moon will you be able to hear any s...

       NCERT solution > Class 6- Science . NCERT solution for class 6// Science //Chapter 8 -Body moments Chapter 8 -Body movement .  Exercise  Q1. Fill in the blanks a) Joints of the bones help in the movement   of the body b) Combination of bones and cartilage is from the framework of the body . c) The bones at the elbow joint by a hinge joint  d) The contraction of the muscles pull the bones during movement . Q2. Indicate true and false among the following sentence  a) The movement and location of all animals is exactly the same  b) The cartilages are harder than bones . c) The finger bones do not have joints  d) The four arm has two bones . e) Cockroaches have an outer skeleton  Answer-  a) false  b) false  c) false  d) True  e) true  Q3. Match the atoms in column a with one or more atoms of column 2                  Column I  ...

  NCERT solution > Science >Class 7  NCERT solution for class 7 // Science // Chapter 9 -  Soil Chapter 9 -  Soil  Exercise .   Tick the most suitable answer in the question 1 and 2  Q1. In addition to the rock particles the soil contains  i) air and water  ii) water and plants   iii) organic matter, air and water  iv) water air and plants  Q2. The water holding capacity is the highest in  i) sandy soil  ii) clayey soil  iii) loamy soil  iv) mixture of sand and loam  Q3. Best items in column 1 with those in column 2                Column 1                                              column 2  1. A home for living organism.                    Large partic...

 NCERT solution > class 8> Science  Chapter 10 - Reaching the age of adolescence  Exercise  Q1. What is the term used for chemical secretion of endocrine glands responsible for changes taking place in the body?  Answer- Hormone term is used for the chemical secretion of endocrine glands responsible for changes taking place in the body Q2. Define adolescence?  Answer- The period of life when the body undergo number of changes leading to reproductive maturity is called adolescence  Q3. What is menstruation explain?  Answer- In females after the age of 13 ovary become mature and released by one ovary once in about 28 to 30 days during this period uterus undergo number of changes in become thick and fleshy to receive the egg .in case it is fertilized and the situation in females is known as pregnancy. But if the egg is not fertilized then the lining of the uterus along with the blood vessels becomes breast and shade of through the vagina that ...