Engineering Questions with Answers - Multiple Choice Questions
Materials Science MCQ’s – Silicate Ceramics
1 - Question
Which of the following is an aluminosilicate?
a) Steatite
b) Cordierite
c) Forsterite
d) Porcelain
View Answer
Explanation: Porcelain is a type of aluminosilicate. They are kaolin or clay based ceramics.
2 - Question
Which of the following is magnesium silicates?
a) Porcelain
b) Earthenware
c) Stoneware
d) Steatite
View Answer
Explanation: Steatite is a magnesium silicate. Magnesium silicates are talc based ceramics.
3 - Question
According to the percentage of water absorption in dense silicate ceramic which of the following is has fine microstructure?
a) 1%
b) 3%
c) 4%
d) 5%
View Answer
Explanation: For a dense silicate ceramic, water absorption percentage should be less than 2% for fine structure and less than 6% for coarse structure.
4 - Question
There are ceramics which are electric resistant.
a) True
b) False
View Answer
Explanation: The above statement is true. There are mullite based fine silicates which are used as electrical insulator.
5 - Question
According to the percentage of water absorption in porous silicate ceramic which of the following has fine microstructure?
a) 1%
b) 1.9%
c) 0.4%
d) 2.1%
View Answer
Explanation: For a porous silicate ceramic, water absorption percentage should be greater than 2% for fine structure and greater than 6% for coarse structure.
6 - Question
Which of the following is the firing temperature of earthenware?
a) 1400 °C
b) 1300 °C
c) 1500 °C
d) 1200 °C
View Answer
Explanation: The firing temperature commonly used for hard earthenware is 1200 °C. It can lie in a range of +50 °C and -50 °C that is 1150 °C and 1250 °C respectively.
7 - Question
Which of the following is firing temperature of hard porcelain?
a) 1400 °C
b) 1300 °C
c) 1500 °C
d) 1200 °C
View Answer
Explanation: The firing temperature commonly used for hard porcelain are 1400 °C. It can lie in a range of +50 °C and -50 °C that is 1350 °C and 1450 °C respectively.
8 - Question
Which of the following is the firing temperature of stoneware?
a) 1400 °C
b) 1300 °C
c) 1500 °C
d) 1200 °C
View Answer
Explanation: The firing temperature commonly used for stoneware is 1250 °C. It can lie in a range of +50 °C and -50 °C that is 1200 °C and 1300 °C respectively. Therefore 1200 °C is the correct answer.
9 - Question
Brick having high porosity will have the ability to resist frost.
a) True
b) False
View Answer
Explanation: The above statement is false. As the ability to resist frost in a brick is observed in bricks having low porosity and thermal insulation is observed in bricks with high porosity.
10 - Question
Which of the following is not a component of steatite ceramic?
a) Talc
b) Clay
c) Feldspar
d) MgCO3
View Answer
Explanation: Steatite is ceramic composed of talc and clay which common for all magnesium ceramics. Along with that, it has feldspar which is also BaCO3. Hence it does not contain MgCO3.