Post category:Everyday Science Mcqs Post comments:0 Comments The number of oscillations per second is called the_____. A. hertz B. waves C. pitch D. frequency Read more articles Previous PostThe first chemical explosive, Gunpowder, is a mixture of_____. Next PostSound waves from a loudspeaker are caused by_____. You Might Also Like Which of the following planets is known as “Morning Star”? August 28, 2020 The most densest substance on the Earth is __________. June 19, 2022 The natural fats and oils are composed of_____. March 10, 2022 Group of stars is called? June 30, 2020 Deficiency of Vitamin-D results in ______. March 9, 2022 In night, when photosynthesis is stopped, plants_____. March 10, 2022 Leave a Reply Cancel replyCommentEnter your name or username to comment Enter your email address to comment Enter your website URL (optional) Save my name, email, and website in this browser for the next time I comment. Δ