Chapter 15 Life Processes in Living Organisms
Chapter 15 Life Processes in Living Organisms Textbook Questions and Answers 1. Match the pairs and explain. Column ‘A’ Column ‘B’ (1) Growth of pollen tube towards ovules (2) Growth…
Chapter 14 Substances in Common Use
Chapter 14 Substances in Common Use Textbook Questions and Answers 1. Fill in the blanks. a. The number of molecules of water of crystallization in washing soda is …………….…. .…
Chapter 13 Carbon: An Important Element
Chapter 13 Carbon: An Important Element Textbook Questions and Answers 1. Select the proper option and complete the statements (single, all, double, ionic, carbon, give and take, hydrogen, multiple, share,…
Chapter 12 Study of Sound
Chapter 12 Study of Sound Textbook Questions and Answers 1. Fill in the blanks and explain. a. Sound does not travel through ……………………….……….. . b The velocity of sound in…
Chapter 11 Reflection of Light
Chapter 11 Reflection of Light Textbook Questions and Answers 1. Answer the following questions. a. Explain the difference between a plane mirror, a concave mirror and a convex mirror with…
Chapter 10 Information Communication Technology (ICT)
Chapter 10 Information Communication Technology (ICT) Textbook Questions and Answers 1. Fill in the blanks to complete the statements. Justify the statements. a. While working with a computer we can…
Chapter 4 Measurement of Matter
Chapter 4 Measurement of Matter Textbook Questions and Answers 1. Give examples. a. Positive radicals Answer: Na+– Sodium ion, K+ – Potassium ion b. Basic radicals Answer: Na+ – Sodium…
Chapter 9 Environmental Management
Chapter 9 Environmental Management Textbook Questions and Answers 1. Match the items in column ‘A’ with the proper ones in coloum ‘B’ and explain their impact on the environment. Column…
Chapter 8 Useful and Harmful Microbes
Chapter 8 Useful and Harmful Microbes Textbook Questions and Answers 1. Complete the statements using the proper option from those given below. Explain the statements. (mycotoxins, budding, rhizobium) a. Yeast…
Chapter 7 Energy Flow in an Ecosystem
Chapter 7 Energy Flow in an Ecosystem Textbook Questions and Answers 1. Complete the following table (Carefully study the carbon, oxygen and nitrogen cycles). Bio-geo-chemical cycles Biotic processes Abiotic processes…