Question:
Which of the following is a non-oxide ceramic?
Which of the following is a non-oxide ceramic?
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Carbides, nitrides, and borides are common non-oxide ceramics.
Updated On: May 7, 2026
- Alumina
- Zirconia
- Silicon nitride
- Magnesia
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The Correct Option is C
Solution and Explanation
Concept:
Advanced ceramics are classified into oxide ceramics and non-oxide ceramics.
Step 1: Alumina is: \[ Al_2O_3 \] So it is an oxide ceramic.
Step 2: Zirconia is: \[ ZrO_2 \] So it is also an oxide ceramic.
Step 3: Magnesia is: \[ MgO \] So it is also an oxide ceramic.
Step 4: Silicon nitride is: \[ Si_3N_4 \] It does not contain oxygen as the main anion. Therefore, silicon nitride is a non-oxide ceramic: \[ \boxed{\text{Silicon nitride}} \]
Step 1: Alumina is: \[ Al_2O_3 \] So it is an oxide ceramic.
Step 2: Zirconia is: \[ ZrO_2 \] So it is also an oxide ceramic.
Step 3: Magnesia is: \[ MgO \] So it is also an oxide ceramic.
Step 4: Silicon nitride is: \[ Si_3N_4 \] It does not contain oxygen as the main anion. Therefore, silicon nitride is a non-oxide ceramic: \[ \boxed{\text{Silicon nitride}} \]
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