In English, there are two types of questions. These are Wh- questions and yes/no questions. Wh- questions, also known as ‘open questions’, are question words that begin with Wh (with the exception of ‘how’). There are seven Wh questions in English. These are who, what, when, where, why, which, and how.
• Who is used in questions to ask about people.
• What is used in questions to ask about something
• When is used in questions to ask about time.
• Where is used in questions to ask about place.
• Why is used in questions to ask the reason for some
• Which is used in questions to ask about choices.
• How is used in questions to ask about various things including way/manner, condition/quality, and extent/degree.