One of the following liquids is immiscible with water. This one is:

There are three objects A, B and C. The objects A and B need food, water and air for their survival whereas object C does not require these things. Object B can make its own food by using carbon dioxide from the air, water from soil and energy from sunlight but object A cannot make its food in this way. 

(a) Which of the object/ objects can be classified as non-living? 

(b) Which of the object/objects can be classified as living? 

(c) Which of the object/objects can be classified as plants? 

(d) Which of the object/ objects can be classified as animals? 

(e) Give one example each of objects like (i) A (ii) B and (iii) C. 

Find the odd one out from the following:

Nail, Utensils, Magnet, Beaker, Coin.

Given the reason for your choice. 

P, Q, and R are the three gaseous components of air. Gases P and Q can dissolve in the water of rivers, lakes, and seas but gas R does not dissolve in water. The organisms S which live in water use the gas P dissolved in water to make their food by the process of photosynthesis. All the organisms which live in water use the gas Q dissolved in water for releasing energy from food. Gas R is the major component of air. 

(a) What are gases (i) P (ii) Q, and (iii) R? 

(b) Name the organisms S. 

Find the odd one out from the following: 

Wood, Stone, Iron, Cotton, Diamond 

Give the reason for your choice. 

 X, Y and Z are the three types of materials. The materials X and Y a break into pieces easily when hit with an object but material Z does not break easily. The material X is used in the windows of the bathroom in our house whereas material Y is used in the windows of our drawing-room. The material Z is used in making doors and almirahs in our house. 

(a) What do you think material X could be? What is the general name of materials like X? 

(b) What could material Y be? Write the general name of materials like Y. 

(c) What could material Z be? What is the general name of materials like Z?