Class 8th Synthetic Fibres |ATP Classes|
Synthetic FibresQuestion: Why plastic should not be burnt?Answer: Burning of plastic release toxic gases which causes air pollution that result various health hazard. This is why we should avoid burning plastic.Question: Why does handle of cooking utensils are made up of Bakelite?Answer: Bakelite is a kind of thermosetting plastic that do not get deform on heating at high temperature. This is why handle of cooking utensils are made up of Bakelite.Question: Avoid wearing …
Read moreClass 8th Cell Structure |ATP Classes|
CELL STRUCTURE1. Name the person who first coined the term “Cell”
Ans: Robert Hooke in 1665, first coined the term Cell.2. Define Cell
Ans: Cell is defined as the basic structural and functional unit of living organisms.3. What will happen to a cell if its nucleus is removed?
Ans: With the passage of time, the cell will die as the nucleus which controls and coordinates all the functions of the cell is absent.4. Give 5 examples of single celled organisms.
Ans: Paramecium, Amoeba,…
Class 8 - SCIENCE - CHAPTER -11 - FORCE AND PRESSURE
CBSE Class 8 - Science - CH11 - Force and PressureForce and PressureNCERT Chapter Solutions and Q & A
Q1: Give two examples each of situations in which you push or pull to change the state of motion of objects?
Answer:
A goal keeper saving a goal.Hockey player flicking a ball.Q2: What is a force?Answer: Force is a push or a pull acting on an object which changes or tends to change the state of the object.Actions like pulling, pushing, lifting, kicking, opening etc. are tas…
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