>
Exams
>
Chemistry
>
The solid state
>
which of the following material acts as a semicond
Question:
Which of the following material acts as a semiconductor at 298 K?
Show Hint
Semiconductors have electrical conductivity that lies between conductors and insulators. Their conductivity increases with temperature.
KEAM - 2024
KEAM
Updated On:
Mar 7, 2025
Iron
Copper oxide
Sodium
Graphite
Glass
Hide Solution
Verified By Collegedunia
The Correct Option is
B
Solution and Explanation
At room temperature (298 K), Copper oxide (\(CuO\)) behaves as a semiconductor, as its electrical conductivity increases with temperature, which is characteristic of semiconductors.
Download Solution in PDF
Was this answer helpful?
0
0
Top Questions on The solid state
A metal crystallizes in simple cubic lattice. The volume of one unit cell is \( 6.4 \times 10^{-7} \, \text{pm}^3 \). What is the radius of the metal atom in pm?
AP EAPCET - 2025
Chemistry
The solid state
View Solution
A metal crystallises in two cubic phases, fcc and bcc with edge lengths 3.5 Å and 3 Å respectively. The ratio of densities of fcc and bcc is approximately
TS EAMCET - 2025
Chemistry
The solid state
View Solution
How many kinds of Bravais lattice are possible in a crystal?
Bihar Board XII - 2025
Chemistry
The solid state
View Solution
The percentage of free space in a body-centred cubic unit cell is
Bihar Board XII - 2025
Chemistry
The solid state
View Solution
Which of the following is not a crystalline solid?
Bihar Board XII - 2025
Chemistry
The solid state
View Solution
View More Questions
Questions Asked in KEAM exam
A lift having mass 1000kg moves upward against a frictional force of 2000N. Power given by motor is 36000W. What is the velocity of the lift?
KEAM - 2025
Speed, Time and Distance
View Solution
Solve for \( a \) and \( b \) given the equations:
\[ \sin x + \sin y = a, \quad \cos x + \cos y = b, \quad x + y = \frac{2\pi}{3} \]
KEAM - 2025
Trigonometry
View Solution
If \( A \) is a \( 3 \times 3 \) matrix and \( |B| = 3|A| \) and \( |A| = 5 \), then find \( \left| \frac{\text{adj} B}{|A|} \right| \).
KEAM - 2025
Matrix Operations
View Solution
An unbiased die is tossed until a sum \( S \) is obtained. If \( X \) denotes the number of times tossed, find the ratio \( \frac{P(X = 2)}{P(X = 5)} \).
KEAM - 2025
Probability
View Solution
If
$ f(x) = \log 3 - \sin x $, $ y = f(f(x)) $, find $ y(0) $.
KEAM - 2025
Functions
View Solution
View More Questions