• Sound waves are longitudinal mechanical waves and frequency can be defined as the number of wave cycles happening in one sec. • Ultrasonic waves or Ultrasound waves: The sound frequency above 20,000Hz (upper audible limit of human hearing) is known as ultrasonic waves. Humans cannot detect it too. • Examples: Bat produce Ultrasonic waves.
The doctor bade me taking the medicine immediately after breakfast.
Select the correct passive form of the given sentence.
Who has taken away my pen?
In the following question a sentence has been given in its active/passive form followed by 5 alternatives. choose the option which is the correct chang...
The shopkeepers were told (A)/by the police that (B)/goods were being selled(C)/by them at higher prices (D).
Mediocre
Change the given sentence into passive voice.
Someone saw the culprit yesterday.
Select the correct passive form of the given sentence.
The PM has announced a very large economic relief package for the country.
Select the correct passive form of the given sentence.
The Indian army has inducted several women officers in Infantry and Armoured Corps.
...Select the correct active form of the given sentence.
Her phone can’t be switched off by my father.
Shayan was practicing football.
