PART - 3 CH - 11 Electricity — Science STD 10 — Question

Make a list of few industries that are dependent on forest products.

State the principle on which the working of an electric generator is based.

What are five R’s used to save environment?

Rearrange the following organs of digestive system :
Small intestine; Oesophagus; Stomach; Rectum; Mouth; Large intestine.
Where does the process of partial digestion of Starch and proteins takes place?

Why we can usually control the urge to urinate?

Blue crystals of copper sulphate on heating in a dry test tube become colourless. Why?

On the way from Ahmedabad to Vadodara there were four friends in a car. Sanjay was driving the car. He saw from his side mirror that the car which was behind their car had met with an accident.
He suddenly applied the brakes, even after his friends asked him to leave the situation as it is. But still Sanjay did not agree and got down from the car and persuaded his friends to help the injured. All of them took the injured person to the nearest hospital. After taking first-aid from the hospital, the victim thanked them for saving his life.
(1) Name the type of mirror from which Sanjay saw the accident.
(2) Why is this type of mirror used as a side mirror in vehicles?
(3) What can you learn from Sanjay's character?

What is the age of the sun? What will be its expected lifespan?