sources of energy — Science STD 10 — Question

Why do you think the noble gases are placed in a separate group?

State the effect on the strength of the magnetic field produced at a point near a straight conductor if the electric current flowing through it increases.

Write the name of the most front part of human eye.

Mention two examples of exothermic reactions.

Mauli and Vishva are best friends and they study in 4th grade. Recently, Mauli has been facing difficulty in reading the blackboard text from the last desk / bench. Vishva wonders why Mauli avoids sitting on the last desk/bench. On observation, Vishva found that Mauli often carries junk food in her lunch. Vishva has started sharing her lunch full of green vegetables and fruits with her. Mauli is now better and has also started taking a "balanced diet".
(1) Name the eye defect Mauli is suffering from.
(2) What are two possible deformities related to her eye defect?
(3) What values do you learn from Vishva and Mauli?

Write the correct sequence of angle of incidence, angle of emergence, angle of refraction and lateral displacement shown in the following diagram by numbers 1, 2, 3 and 4.

When quick lime is added to water, a hissing sound is produced. Write the chemical reaction and state the type of reaction that takes place.

What criteria do we use to decide whether something is alive?

Why the lungs always contain a residual volume of air?