Which of the following compound of cement sets at the slowest rate?

Which one of the following components of cement sets at the slowest rate: Dicalcium silicate, Tricalcium silicate, Tricalcium aluminate, Tricalcium aluminoferrite.

Which of the following compounds is the slowest to react with nitrosonium ion (NO^+) ?

Which of the following compounds undergoes nitration at fastest rate ?

Which of the following compound give solvolysis reaction with slowest rate ?

Which of the following compound give solvolysis reaction with slowest rate ?

Which of the following is not present in cement ?

Which of the following is not present in cement ?