P-2 Life Processes in Living Organisms Part – 2 — Science STD 10 — Question

(1) Why do we have to bring a small object near the eyes in order to see it clearly?
(2) If we bring an object closer than 25 cm from the eyes, when can we not see it clearly even though it subtends a bigger angle at the eye?

Find the odd one out: Drying, Salting, Cooking, Soaking with sugar

Which compound of calcium is used for disinfecting drinking water supply?

Which one of the following is not a terrestial ecosystem?
Forest, Grassland, Aquarium, Desert.

A food chain represents a unidirectional flow of X. What is X?

As light rays emerge from a glass prism into air, are they refracted towards or away from the normal?

What happens to the other bulbs in a series circuit if one bulb blows off?

What is the name of tissues which transport:

1. Food in a plant?
2. Water and minerals in a plant?

Write the functions of the following: Sporangium.

Name one method for the refining of metals.