This set of Materials Science Multiple Choice Questions & Answers (MCQs) focuses on “Silicate Ceramics”.
1. 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. 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. 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. 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. 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. 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. 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. 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. 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. 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.
Sanfoundry Global Education & Learning Series – Materials Science.
To practice all areas of Materials Science, here is complete set of 1000+ Multiple Choice Questions and Answers.
