NCERT Solutions for Class 7th Science Chapter 13 Wastewater Story according to the Latest Syllabus Of JKBOSE and CBSE NCERT Books 1. Fill in the blanks: (a) Cleaning of water is a process of removing contaminants. (b) Wastewater released by houses is called sewage. (c) Dried sludge is used as manure. (d) Drains get blocked … Read more
NCERT Solutions for Class 7th Science Chapter 12 Forest Our Lifeline according to the Latest Syllabus Of JKBOSE and CBSE NCERT Books 1. Explain how animals dwelling in the forest help it grow and regenerate. Animals play a crucial role in the growth and regeneration of forests. They help in seed dispersal by carrying seeds … Read more
NCERT Solutions for Class 7th Science Chapter 11 Light according to the Latest Syllabus Of JKBOSE and CBSE NCERT Books 1. Fill in the blanks: (a) An image that cannot be obtained on a screen is called virtual. (b) Image formed by a convex mirror is always virtual and smaller in size. (c) An image … Read more
NCERT Solutions for Class 7th Science Chapter Motion and Time according to the Latest Syllabus Of JKBOSE and CBSE Books Exercises – Motion and Time Exercises 1. Classify the following as motion along a straight line, circular or oscillatory motion: (i) Motion of your hands while running: Oscillatory motion. The hands move back and forth … Read more
NCERT Solutions for Class 7 Science Chapter 7 Transportation in Plants and Animals accordingly Latest Syllabus Of JKBOSE and CBSE Books (I) Multiple Choice Questions – Tick mark (✔) the correct choice. (II) Fill in the blanks: (III) Match the Column A with those in Column B: (IV) Write true or false in front of … Read more
NCERT Solutions for Class 7 Science Chapter 6 Respiration in Organisms with Important Questions and answers according to the Latest Syllabus Of JKBOSE and CBSE NCERT Books 1. Define cellular respiration. 2. Why does an athlete breathe faster and deeper than usual after finishing the race? 3. List the similarities and differences between aerobic and … Read more
NCERT Solutions for Class 7th Science Chapter 5 Physical and Chemical changes according to the Latest Syllabus Of JKBOSE and CBSE NCERT Books. 1. Classify the changes involved in the following processes as physical or chemical changes: (a) Photosynthesis (b) Dissolving sugar in water (c) Burning of coal (d) Melting of wax (e) Beating aluminum … Read more
Nature and Structure Electric charge, like mass and length, is a fundamental property of matter. Atoms, the building blocks of matter, are composed of electrons, protons, and neutrons. Electrons carry a negative charge, protons carry a positive charge, and neutrons are neutral. Atomic Structure In a neutral atom, the number of electrons equals the number … Read more
Coulomb’s Law Coulomb’s Law Coulomb’s Law In 1786, Charles-Augustin de Coulomb deduced the expression for the force between two stationary point charges in a vacuum or free space. Consider two point charges, q1 and q2, at rest in a vacuum and separated by a distance r as shown in Figure 1.2. According to Coulomb, the … Read more
The menstrual or ovarian cycle occurs approximately once every 28–29 days during the reproductive life of females, from menarche (puberty) to menopause, except during pregnancy. The cycle of events starting from one menstrual period until the next one is called the menstrual cycle, during which cyclic changes occur in the endometrium every month. Cyclic menstruation … Read more