true or false -The ventiltors in the top of rooms are used to expell cold air.

True (T) or false (F) The top view of

Answer true or false An alternating current cannot be used for electroplating.

Arrange the following steps in a sequential order to explain the formation of conventional currents through ventilation. (a) the cold air enters into the room through windows from high pressure to low pressure region (b) hot air in the room is less denser and it raises up (c ) the rooms are provided with ventilators at the top (d) hot air passes out through the ventilators it creates low pressure region in the room

State whether the following statements are True or False. If false, correct them. Yak hair are not used to make woollen fabric.

Answer true or false. 'Faster the movement of the air greater is the drop in pressure'.