Advertisements
Advertisements
प्रश्न
Which of the following statements is not true?
पर्याय
Paramagnetic substances are weakly attracted by magnetic field.
Ferromagnetic substances cannot be magnetised permanently.
The domains in antiferromagnetic substances are oppositely oriented with respect to each other.
Pairing of electrons cancels their magnetic moment in the diamagnetic substances.
Advertisements
उत्तर
Ferromagnetic substances cannot be magnetised permanently.
Explanation:
Ferromagnetic species are strongly attracted in the magnetic field and can be permanently magnetised.
APPEARS IN
संबंधित प्रश्न
What type of magnetism is shown by a substance if magnetic moments of domains are arranged in same direction?
What type of substances would make better permanent magnets, ferromagnetic or ferrimagnetic. Justify your answer.
Out of [CoF6]3- and [Co(en)3]3+, which one complex is
(i) paramagnetic
(ii) more stable
(iii) inner orbital complex and
(iv) high spin complex
(Atomic no. of Co = 27)
The BH curve for a ferromagnetic material is shown in the figure. The material is placed inside a long solenoid which contains 1000 turns/cm. The current that should be passed in the solenonid to demagnetize the ferromagnet completely is

Compare dia, para and ferromagnetism.
When heated to high temperature, ferromagnetic substance changes to ____________.
Assertion: On heating ferromagnetic or ferrimagnetic substances, they become paramagnetic.
Reason: The electrons change their spin on heating.
Fe3O4 (magnetite) is an example of ___________.
Which of the following arrangements shows schematic alignment of magnetic moments of antiferromagnetic substances?
Which one of the following pairs has only paramagnetic species?
The heat of combustion of a substance is:
Which of the following is not a ferroelectric compound?
Some of the polar crystals when heated produces small electrical current. This phenomenon is called ______.
Magnetic materials used for making permanent magnets (P) and magnets in a transformer (T) have different properties of the following, which property best matches for the type of magnet required ?
The value of aluminium susceptibility is 2.2 × 10-5. The percentage increase in the magnetic field if space within a current carrying toroid is filled with aluminium is `"x"/10^4`. Then the value of x is ______.
Which of the following is not paramagnetic?
Give a reason for the following:
Cu+2 salts are paramagnetic, while Cu+ salts are diamagnetic.
