Challenger App
Home
Exams
Questions
Quiz
Notes
Blog
Contact Us
e-Book
×
Home
Exams
▼
Questions
Quiz
Notes
Blog
Contact Us
e-Book
Home
/
Questions
/
Building Materials and Construction
/
Plane cement Concrete, Reinforced cement concrete Timber
No.1 PSC Learning App
★
★
★
★
★
1M+ Downloads
Get App
70% strength of concrete obtained at
A
7 days
B
14 days
C
28 days
D
1 year
Answer:
C. 28 days
Related Questions:
Compared to mild steel the Steel used for prestressing of concrete beam has:(
Uniformity Coefficient of fillers and is given by:
Generally adopted method for curing of concrete slab is
Workability of concrete mix having very low water cement ratio should be obtained by:
The innermost central portion of the tree is called