A. decreases
B. increases
C. remains same
D. may increase or decrease
Related Mcqs:
- Compared to mild steel, cast iron has (1) high compressive strength (2) high tensile strength (3) low compressive strength (4) low tensile strength The correct answer is_________________?
A. (1) and (2)
B. (2) and (3)
C. (3) and (4)
D. (1)and(4) - The predominant constituent which is responsible for strength in granite is_____________?
A. quartz
B. feldspar
C. mica
D. none of the above - Crushing strength of a good building stone should be more than____________?
A. 50 MPa
B. 100 MPa
C. 150 MPa
D. 200 MPa - In which of the following directions, the strength of timber is maximum ?
A. parallel to grains
B. 45° to grains
C. perpendicular to grains
D. same in all directions - Crushing strength of a first class brick should not be less than_____________?
A. 3.5 N/mm2
B. 7.0 N/mm2
C. 10.5 N/mm2
D. 14.0 N/mm2 - Quick lime is (1) slow in setting (2) rapid in slacking (3) good in strength The correct answer is____________?
A. only (1)
B. only (2)
C. both (1) and (2)
D. both (2) and (3) - Assertion A : Pure lime takes a long time to develop adequate strength. Reason R : Pure lime has slow hardening characteristics. Select your answer according to the coding system given below ?
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true and R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true - According to IS specifications, the compressive strength of ordinary portland cement after three days should not be less than________________?
A. 7 MPa
B. 11.5 MPa
C. 16 MPa
D. 21 MPa - Early attainment of strength in rapid hardening cement is mainly due to_______________?
A. gypsum
B. finer grinding
C. tricalcium silicate
D. tricalcium aluminate - For testing compressive and tensile strength of cement, the cement mortar is made by mixing cement and standard sand in the proportions of___________________?
A. 1:2
B. 1:3
C. 1:4
D. 1:6
