Start learning →

TN Police Constable Sound and Ultrasound — practice questions

Explore 1 free Sound and Ultrasound questions in TN Police Constable Science. Open each question or exercise to read its content, reference answers and available explanation.

Practise Sound and Ultrasound with Quill →

Sound and Ultrasound questions and exercises with answers

Showing questions 1–1 of 1.

Which of the following animals can produce ultrasound?Read the answer and worked solution →

Worked practice questions

Which of the following animals can produce ultrasound?

  1. Moths
  2. Sharks
  3. Elephants
  4. Porpoises
Show answer and solution

Correct answer: D. Porpoises

1. Ultrasound is sound of frequency above the human hearing limit. 2. Porpoises, like dolphins, produce ultrasonic clicks for echolocation. 3. Hence porpoises can produce ultrasound. _Source: RRB Group D CEN-02/2018 PYQ, Q.84._

Open this question →

How to practise

  1. Choose a Sound and Ultrasound question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Science topics

Science & TechnologyPhysicsChemistryBiologyWork and EnergyPeriodic TableGravitationAcids, Bases and Salts