Class 10th Science solutions

Page No: 212 Q1: What are trophic levels? Give an example of a food chain and state the different trophic […]

Page No: 196 Q1: Why does a compass needle get deflected when brought near a bar magnet?Ans: The needle of a

Page No. 172 Q1: What does an electric circuit mean?Ans: A continuous and closed path of an electric current is called

Page No. 164 Q1. What is meant by power of accommodation of the eye? Ans: When the ciliary muscles are relaxed,

Table of contents Page No. 142 Q1. Define the principal focus of a concave mirror.Ans: Light rays that are parallel to

Page No. 129 Q1: If a trait A exists in 10% of a population of an asexually reproducing species and

Page No. 128 Q1: What is the importance of DNA copying in reproduction?Ans: Q2: Why is variation beneficial to the

Page No. 105 Q1: What is the difference between a reflex action and walking?Ans:  Q2: What happens at the synapse

Page No. 81 Q1: Why is diffusion insufficient to meet the oxygen requirements of multicellular organisms like humans?Ans: Multicellular organisms such

 Page No: 61 Q1: What would be the electron dot structure of carbon dioxide, which has the formula CO2?Ans: Q2: