Knowledge about air duct cleaning is in its early stages, so a blanket recommendation cannot be offered as to whether you should have your air ducts in your home cleaned. The U.S. Environmental Protection Agency (EPA) urges you to read this document in it entirety as it provides important information on the subject.
Historically, IQ is a score obtained by dividing a personâs mental age score, obtained by administering an intelligence test, by the personâs chronological age, both expressed in terms of years and months. The resulting fraction is multiplied by 100 to obtain the IQ score.
The short answer is: you can't. If you are an adult in the united states and want to take a legitimate IQ test, then you need to pay to have a psychologist administer it. Children can get them free through their school districts as part of an evaluation to determine Special Education Eligibility. Online tests are not really IQ tests.