Question

SECTION:B
10.A motor car with its glass totally closed is parked directly under the sun. The inside
temperature of the car rises to a great extent. Explain why? (2M)
11. Calculate the mass of 2.5 mole of Cl2 . (2M)
SECTION:C
12. Comment upon the following: (3M)
i. Cathode rays travel in a straight line.
ii. Cathode rays carry negative charge.
ii. Cathode rays consists of material particles .
13. a)Depict pedogenesis with the help of a chart (3M)
b). Name the diseases caused by the presence of these toxic chemicals in water bodies.
i. Mercury ii. Cadmium
14. (i) A ball is thrown vertically upward with a velocity of 49m/s. calculate: (3M)
a. The maximum height to which it rises.
b. The total time it takes to return to the Earth.
(ii) What happens to the force between two objects if,
a. The mass of one object is doubled?
b. The distance between the objects is doubled and tripled?​

Answer 1

Answer:

Air cools when the flame goes out. The molecules slow down and air pressure decreases. Water vapor condenses to moisture on the glass, causing lower air pressure. ... To reach equilibrium, the area must decrease, so the water rises into the glass.