Objective Questions 2. Q42 Why is a ventilator in a room? Looking to do well in your science exam? Learn from an expert tutor. Book a free class! Solution Transcript. Solution: Ventilators are provided in rooms for proper ventilation because when we breathe out in a room, the air in the room becomes warm and impure.
Set your child up for success with Lido, book a class today! Maths Class 6 Class 7 Class 8. Science Class 6 Class 7 Class 8. Selina Question Bank. Air regulation Unless you have a good ventilation system in place, you have no control of the air flow in your building. Too much fresh air can mean costly energy bills, which is why good ventilation helps control the air, while regulating to the required health and safety levels.
Stop condensation Condensation can lead to mould and rotten surfaces - which, naturally, is something you would want to avoid. Damp conditions and condensation can also cause health issues, such as allergic reactions and respiratory problems for many people. However, ensuring your company or organisation has good ventilation systems in place will help reduce these risks. Reduce temperatures When there are lots of people in a confined space, whether is for work, conference or a public event, the environment can soon become hot and stuffy.
A well-ventilated room will instantly be more comfortable - creating a more relaxed environment, while also making for a more productive workplace. Health benefits Another benefit of good ventilation systems is the positive impact it as on health and well-being. Indoor air pollution coupled with bad ventilation can lead to a number of health problems including headaches, allergies, asthma, rashes and sinusitis. The correct answer is to maintain convectional currents to keep the air fresh in the room.
Additional Information. Start Learning English Hindi. This question was previously asked in. Answer Detailed Solution Below Option 3 : to maintain convectional currents to keep the air fresh in the room. Win over the concepts of Physics and get a step ahead with the preparations for General Science with Testbook.
Start Now. Ventilators are provided at the top of the room to maintain conventional currents to keep the air fresh in the room. Ventilators are provided at the top of the room because if that air inside the room gets hot, the hot air rises up and flows through these ventilators and thus cool air remains at the bottom.
It brings cool and fresh air in the room. Thus ventilators maintain conventional currents to keep the air fresh in the room. Also, note that the hot air gathers at the top of the room hence ventilator or ACs are installed at the top of the room. Convection is the process to transfer heat from one place to another by the motion of the particles. Additional Information Various type of heat transfers are as follows: Type of Heat Transfer Explanation Conduction It is the passing of thermal energy between material which are in contact with one another.
Convection It is the transfer of thermal energy from a surface by way of motion of a fluid such as air or water.
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