MEDIUM
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Which of the following set of ions is diamagnetic in nature ?

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Important Questions on Solid State

EASY
Find the non-semiconductor element among the following.
EASY

Which of the following ion is paramagnetic?

EASY
X ’ melts at low temperature and is a bad conductor of electricity in both liquid and solid state. X is:
MEDIUM

What are paramagnetism and ferromagnetism ? What type of substances would make better permanent magnets - ferromagnetic or ferrimagnetic ?

MEDIUM
Which of the following oxides shows electrical properties like metals?
EASY
A ferromagnetic substance becomes a permanent magnet when it is placed in a magnetic field because, 
EASY
The one that is extensively used as a piezoelectric material is:
EASY

Explain the following :

Ferromagnetism

MEDIUM

Explain the following : 

Paramagnetism.

MEDIUM
Which one of the following species responds to an external magnetic field?
MEDIUM

Match List - I with List - II:

List-I (Property) List-II (Example)
(a) Diamagnetism (i) MnO
(b) Ferrimagnetism (ii) O2
(c) Paramagnetism (iii) NaCl
(d) Antiferromagnetism (iv) Fe3O4

Choose the most appropriate answer from the options given below:

HARD

Match the following:

i Ge doped with  In 1. n-type semiconductor
ii Si doped with N 2. Schottky defect
iii ZnS 3. p-type semiconductor
iv CsCl 4. Frenkel defect

 

EASY
Silicon doped with gallium forms
EASY
Which of the following arrangements shows the schematic alignment of magnetic moments of antiferromagnetic substance?
EASY

From the following which type of magnetic substance magnetite is known?

HARD

In an experiment, m grams of a compound X (gas/liquid/solid) taken in a container is loaded in a balance as shown in figure I below. In the presence of a magnetic field, the pan with X is either deflected upwards (figure II), or deflected downwards (figure III), depending on the compound X. Identify the correct statement(s).

 Question Image
EASY
Fe,Co,Ni are which type of magnetic substance?
EASY
A common observation seen in Fe3O4 is that it is ferrimagnetic at room temperature but at 850 K it becomes