• HOME
  • QUIZ
  • CONTACT US
EXAMIANS
  • COMPUTER
  • CURRENT AFFAIRS
  • ENGINEERING
    • Chemical Engineering
    • Civil Engineering
    • Computer Engineering
    • Electrical Engineering
    • Mechanical Engineering
  • ENGLISH GRAMMAR
  • GK
  • GUJARATI MCQ

Refractory Technology

Refractory Technology
Which is the stable form of silica between 1470°C and the melting point 1713°C ?

Cristobalite
None of these
Tridymite
Quartz

ANSWER DOWNLOAD EXAMIANS APP

Refractory Technology
Pyrometric cone equivalent (PCE) value (Segar cone) of 'superduty refractories' is more than 33 which corresponds to a temperature of __________ °C.

1670
1730
1520
1630

ANSWER DOWNLOAD EXAMIANS APP

Refractory Technology
The highest melting pure oxide (m.p. > 3000°C) is

Zirconia
Beryllia
Alumina
Thoria

ANSWER DOWNLOAD EXAMIANS APP

Refractory Technology
An insulating refractory brick should have high porosity and low thermal conductivity. Which of the following is not used for inducing porosity in the insulating refractory bricks during its manufacture?

Chemically prepared foam
Sand
Cork
Saw dust

ANSWER DOWNLOAD EXAMIANS APP

Refractory Technology
Which of the following bricks has the most close values of RUL and PCE?

Fireclay bricks
Tar dolomite bricks
High alumina bricks
Silica bricks

ANSWER DOWNLOAD EXAMIANS APP

Refractory Technology
'Super refractories' are made from pure

Carbides
Nitrides
Borides
Oxides

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Refractory Technology

DOWNLOAD APP

  • APPLE
    from app store
  • ANDROID
    from play store

SEARCH

LOGIN HERE


  • GOOGLE

FIND US

  • 1.70K
    FOLLOW US
  • EXAMIANSSTUDY FOR YOUR DREAMS.
  • SUPPORT :SUPPORT EMAIL ACCOUNT : examians@yahoo.com

OTHER WEBSITES

  • GUJARATI MCQ
  • ACCOUNTIANS

QUICK LINKS

  • HOME
  • QUIZ
  • PRIVACY POLICY
  • DISCLAIMER
  • TERMS & CONDITIONS
  • CONTACT US
↑