Symptoms for aggressive ASR?

Cement not more than ____ months old should be used.

Compressive strength of hardened concrete is done by _____

Plastic shrinkage cracking occurs in ____ hours after placing.

In Concrete core test the strength is ____ at the top and _____ at the bottom.

Dry intervals in surface wetting leads to ________

What should be the minimum water cement ratio?

Which can be the possible option for cracking in the building?