Answer: D) All the above Explanation: Processes that require or give off heat will be limited to changes of state, known as phase changes, and changes in chemical constitution, or chemical reactions. Changes of state involve a solid melting, a liquid freezing, a liquid boiling or a gas condensing.   An exothermic process is one that gives off heat, which is transferred to the surroundings. An endothermic process is a reaction which heat has to be supplied to the system from the surroundings.   Here in all the given options, heat is taken away from them to change there phase.  Liquid to Solid --- Freezing Gas to Liquid --- Condensation Gas to Solid --- Deposition  are all examples of exothermic processes.

Answer: B) Renewable Explanation: Many types of renewable energy resources such as wind and solar energy are constantly replenished and will never run out.

Answer: A) Only statement A is required Explanation: From statement (A), 20b = (1/2) × b × h h = 40 cm.

Answer: B) Both pitcher and out fielder Explanation:

Answer: D) Infinity Tower Explanation: The world's tallest twisted tower, the Infinity Tower was launched in Dubai Marina on 10 June 2013.

Answer: B) Cerebellum Explanation: The cerebellum is a small part of the brain positioned at the back of the head, where it meets the spine, which acts as the body's movement and balance control centre.     It's a lot smaller than the cerebrum at only 1/8 of its size. But it's a very important part of the brain.

Answer: D) Both A & B Explanation: The capacity of a water heater is measured in Gallons or Liters. In the USA, it is measured in Gallons and in India, we measure it in Liters. Hence, if the capacity of the water heater is 15 gallons or 15 liters, then it says that it can hold 15 gallons or 15 liters of water.

Answer: B) FALSE Explanation: False. Cube is not a Polygon. Because polygon is a two dimensional figure and can be drawn on a flat surface whereas Cube is three dimensional figure and cannot be drawn on a flat surface.