Clik here to view.
NCERT Solutions for Class 10th: Ch 3 Metals and Non-metals Science
NCERT Solutions for Class 10th: Ch 3 Metals and Non-metals ScienceIn Text QuestionsPage No: 401. Give an example of a metal which(i) is a liquid at room temperature.► Mercury(ii) can be easily cut with...
View ArticleClik here to view.
NCERT Solutions for Class 10th: Ch 4 Carbon and its Compounds Science
NCERT Solutions for Class 10th: Ch 4 Carbon and its Compounds ScienceIn Text QuestionsPage No: 611. What would be the electron dot structure of carbon dioxide which has the formula CO2?Answer2. What...
View ArticleClik here to view.
NCERT Solutions for Class 10th: Ch 5 Periodic Classification of Elements Science
NCERT Solutions for Class 10th: Ch 5 Periodic Classification of Elements ScienceIn Text QuestionsPage No: 811. Did Dobereiner's triads also exist in the columns of Newlands' Octaves? Compare and find...
View ArticleClik here to view.
NCERT Solutions for Class 10th: Ch 6 Life Processes Science
NCERT Solutions for Class 10th: Ch 6 Life Processes ScienceIn Text QuestionsPage No: 951. Why is diffusion insufficient to meet the oxygen requirementsof multi-cellular organisms like...
View ArticleClik here to view.
NCERT Solutions for Class 10th: Ch 7 Control and Coordination Science
NCERT Solutions for Class 10th: Ch 7 Control and Coordination ScienceIn Text QuestionsPage No: 1191. What is the difference between a reflex action and walking?AnswerA reflex action is voluntary action...
View ArticleClik here to view.
NCERT Solutions for Class 10th: Ch 8 How do Organisms Reproduce? Science
NCERT Solutions for Class 10th: Ch 8 How do Organisms Reproduce? ScienceIn Text QuestionsPage No: 1281. What is the importance of DNA copying in reproduction?AnswerDNA is the genetic material present...
View ArticleClik here to view.
NCERT Solutions for Class 10th: Ch 9 Heredity and Evolution Science
NCERT Solutions for Class 10th: Ch 9 Heredity and Evolution ScienceIn Text QuestionsPage No: 1431. If a trait A exists in 10% of a population of an asexually reproducing species and a trait B exists in...
View ArticleClik here to view.
NCERT Solutions for Class 10th: Ch 10 Light - Reflection and Refraction Science
NCERT Solutions for Class 10th: Ch 10 Light - Reflection and Refraction ScienceIn Text QuestionsPage No: 1681. Define the principal focus of a concave mirror.AnswerLight rays that are parallel to the...
View ArticleClik here to view.
NCERT Solutions for Class 10th: Ch 11 Human Eye and Colourful World Science
NCERT Solutions for Class 10th: Ch 11 Human Eye and Colourful World ScienceIn Text QuestionsPage No: 1901. What is meant by power of accommodation of the eye?AnswerThe ability of the eye lens to adjust...
View ArticleClik here to view.
NCERT Solutions for Class 10th: Ch 12 Electricity Science
NCERT Solutions for Class 10th: Ch 12 Electricity ScienceIn Text QuestionsPage No: 2001. What does an electric circuit mean?AnswerA continuous and closed path of an electric current is called an...
View ArticleClik here to view.
NCERT Solutions for Class 10th: Ch 13 Magnetic Effects of Electric Current...
NCERT Solutions for Class 10th: Ch 13 Magnetic Effects of Electric Current ScienceIn Text QuestionsPage No: 2241. Why does a compass needle get deflected when brought near a bar magnet?AnswerThe needle...
View ArticleClik here to view.
NCERT Solutions for Class 10th: Ch 14 Sources of Energy Science
NCERT Solutions for Class 10th: Ch 14 Sources of Energy ScienceIn Text QuestionsPage No: 2431. What is a good source of energy?AnswerA good source of energy fulfils the following criteria:→ It produces...
View ArticleClik here to view.
NCERT Solutions for Class 10th: Ch 15 Our Environment Science
NCERT Solutions for Class 10th: Ch 15 Our Environment ScienceIn Text QuestionsPage No: 2571. Why are some substances biodegradable and some non-biodegradable?AnswerSubstances are classified as...
View ArticleClik here to view.
NCERT Solutions for Class 10th: Ch 16 Management of Natural Resources Science
NCERT Solutions for Class 10th: Ch 16 Management of Natural Resources ScienceIn Text QuestionsPage No: 2691. What changes can you make in your habits to become more environment-friendly?AnswerWe can be...
View ArticleClik here to view.
NCERT Solutions for Class 8th: Ch 1 Crop Production and Management Science
NCERT Solutions for Class 8th: Ch 1 Crop Production and Management SciencePage No: 13Excercise1. Select the correct word from the following list and fill in the blanks.float, water, crop, nutrients,...
View ArticleClik here to view.
NCERT Solutions for Class 8th: Ch 2 Microorganisms : Friend and Foe Science
NCERT Solutions for Class 8th: Ch 2 Microorganisms : Friend and Foe SciencePage No: 29Excercise1. Fill in the blanks:(a) Microorganisms can be seen with the help of a _________.(b) Blue green algae fix...
View ArticleClik here to view.
NCERT Solutions for Class 8th: Ch 3 Synthetic Fibres and Plastics Science
NCERT Solutions for Class 8th: Ch 3 Synthetic Fibres and Plastics SciencePage No: 41Excercise1. Explain why some fibres are called synthetic.AnswerSome fibres are called synthetic fibres because they...
View ArticleClik here to view.
NCERT Solutions for Class 8th: Ch 4 Materials : Metals and Non-Metals Science
NCERT Solutions for Class 8th: Ch 4 Materials : Metals and Non-Metals SciencePage No: 53Excercise1. Which of the following can be beaten into thin sheets?(a) Zinc(b) Phosphorus(c) Sulphur (d) Oxygen►...
View ArticleClik here to view.
NCERT Solutions for Class 8th: Ch 5 Coal and Petroleum Science
NCERT Solutions for Class 8th: Ch 5 Coal and Petroleum SciencePage No: 62Excercise1. What are the advantages of using CNG and LPG as fuels?AnswerThe advantages of using compressed natural gas (CNG) and...
View ArticleClik here to view.
NCERT Solutions for Class 8th: Ch 6 Combustion and Flame Science
NCERT Solutions for Class 8th: Ch 6 Combustion and Flame SciencePage No: 75Excercise1. List conditions under which combustion can take place.AnswerThe conditions required for combustion to take place...
View Article