Q. Describe the location and extent of the Northern Plains of India.

Q. Give the three chief characteristics of the alluvial soil.

Q. In brief, what happens when the Golgi apparatus is removed from the cell?

Q. Give names of two plants that have taproots.

Q. Explain why (a) The angle of contact of mercury with glass is obtuse, while that of water with glass is acute. (b) Water on a clean glass surface tends to spread out while mercury on the same surface tends to form drops. (Put differently, water wets glass while mercury does not). (c) Surface tension of a liquid is independent of the area of the surface. (d) Water with detergent dissolved in it should have small angles of contact. (e) A drop of liquid under no external forces is always spherical in shape.

Q. Name some seeds which are flat.

Q. X and Y entered into partnership On 1st April, 2017 X and Y contributed Rs. 2,00,000 and Rs. 1,50,000 respectively as their capitals. On 1st October, 2017, X provided Rs. 50,000 as loan to the firm. As per the provisions of the Partnership: Deed:.(i) 20

Q. Write short notes on Environmental conservation.

Q. What is eustele?

Q. In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium ethanoate. Show that these observations are in agreement with the law of conservation of mass.