Start learning →

CTET Magnet — practice questions — page 2

Explore 52 free Magnet questions in CTET Science. Open each question or exercise to read its content, reference answers and available explanation.

Practise Magnet with Quill →

Magnet questions and exercises with answers

Showing questions 31–52 of 52.

In older cathode-ray tube televisions, an electromagnet guides which particles to the screen?Read the answer and worked solution →A scrapyard magnet separates iron scrap from which non-magnetic metal?Read the answer and worked solution →Why are magnets placed in food factories?Read the answer and worked solution →An old audio cassette stores sound on what?Read the answer and worked solution →Which test can a patient with an implanted pacemaker not undergo?Read the answer and worked solution →Why is swallowing two or more small magnets dangerous for a child?Read the answer and worked solution →Alnico magnets are made mainly from which metals with iron?Read the answer and worked solution →Which of these permanent magnets is among the strongest?Read the answer and worked solution →Which magnet type can be used at the highest temperature?Read the answer and worked solution →Flexible magnets use ferric oxide mixed with what binder?Read the answer and worked solution →A circular wire loop of area A carries current I. Its magnetic moment equals?Read the answer and worked solution →In a bar magnet, the magnetic moment points from which pole to which?Read the answer and worked solution →What did the ancient Indian text Sushruta Samhita use lodestone for?Read the answer and worked solution →Which Greek philosopher was credited with discovering that lodestone attracts iron?Read the answer and worked solution →What replaced the dry compass in the early 20th century?Read the answer and worked solution →What were the first magnetic compasses made from?Read the answer and worked solution →Who developed the electromagnet into a commercial product around 1830?Read the answer and worked solution →How can you make a coil electromagnet stronger by changing the coil?Read the answer and worked solution →Which machine uses an electromagnet to lift heavy scrap in a junkyard?Read the answer and worked solution →Commercial demagnetizers erase tools and hard disks using what kind of field?Read the answer and worked solution →Compact high-strength magnets often use which group of elements?Read the answer and worked solution →How does an electric guitar pickup work?Read the answer and worked solution →

Worked practice questions

In older cathode-ray tube televisions, an electromagnet guides which particles to the screen?

  1. Protons
  2. Electrons
  3. Neutrons
  4. Atoms of gas
Show answer and solution

Correct answer: B. Electrons

1. A cathode-ray tube fires a beam at the screen. 2. An electromagnet steers the beam. 3. The beam is made of electrons. _Source: Wikipedia, Magnet, Common uses_

Open this question →

A scrapyard magnet separates iron scrap from which non-magnetic metal?

  1. Nickel
  2. Cobalt
  3. Steel
  4. Aluminium
Show answer and solution

Correct answer: D. Aluminium

1. Magnets pick up iron, cobalt and nickel. 2. They leave non-magnetic metals such as aluminium behind. 3. Nickel and cobalt would be lifted along with iron. _Source: Wikipedia, Magnet, Common uses_

Open this question →

Why are magnets placed in food factories?

  1. To catch stray metal bits
  2. To improve the taste
  3. To keep the food warm
  4. To dye the food items
Show answer and solution

Correct answer: A. To catch stray metal bits

1. Metal fragments may enter raw materials. 2. Magnets catch magnetic metal foreign bodies. 3. They do not flavour, heat or colour food. _Source: Wikipedia, Magnet, Common uses_

Open this question →

How to practise

  1. Choose a Magnet 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.

Put it into practice

Continue with Magnet practice for CTET. Read explanations as you go. No signup form needed to start.

Practise Magnet →

More Science topics

TransportNutrientMaterials Around UsDiversity in the Living WorldNatural phenomenaNatural ResourceFood: Where Does It Come From?Filtration