Concrete Technology MCQ Questions with answers and solutions Page 2

Q. Highest oxide composition present in cement is…

(A) Silica
(B) Alumina
(C) Iron oxides
(D) Lime

💬 Discuss

✅ Correct Answer: (D) Lime

Published by Manisha Agrawal ⭐ 9.34K Points at 16-Jun-2021 02:11 am in Concrete Technology

Q. First 7 days strength in cement is due to….. Bogue compound.

(A) C3S
(B) C2S
(C) C3A
(D) C4AF

💬 Discuss

✅ Correct Answer: (A) C3S

Published by Manisha Agrawal ⭐ 9.34K Points at 16-Jun-2021 02:11 am in Concrete Technology

Q. Heat of hydration of C3S at 90 days is ………. cal/g

(A) 58
(B) 104
(C) 122
(D) 150

💬 Discuss

✅ Correct Answer: (B) 104

Published by Manisha Agrawal ⭐ 9.34K Points at 16-Jun-2021 02:11 am in Concrete Technology

Q. ……refers to the gain of strength of a set cement paste.

(A) Setting of cement
(B) Hardening of cement
(C) .…
(D) …

💬 Discuss

✅ Correct Answer: (B) Hardening of cement

Published by Manisha Agrawal ⭐ 9.34K Points at 16-Jun-2021 02:11 am in Concrete Technology

Q. For long time storage ……..cement used.

(A) Masonry cement
(B) Ordinary
(C) Hydrophobic
(D) All of above

💬 Discuss

✅ Correct Answer: (C) Hydrophobic

Published by Manisha Agrawal ⭐ 9.34K Points at 16-Jun-2021 02:11 am in Concrete Technology

Q. Repair of air-field pavement use……

(A) Air entrained cement
(B) Very high Strength cement
(C) Rediset Cement
(D) All of above

💬 Discuss

✅ Correct Answer: (B) Very high Strength cement

Published by Manisha Agrawal ⭐ 9.34K Points at 16-Jun-2021 02:11 am in Concrete Technology

Q. Note more than ……. bags should be kept one above other.

(A) 20
(B) 25
(C) 14
(D) Any of these

💬 Discuss

✅ Correct Answer: (C) 14

Published by Manisha Agrawal ⭐ 9.34K Points at 16-Jun-2021 02:11 am in Concrete Technology

Q. For Fineness test ……. micron sieve is use.

(A) 100
(B) 80
(C) 60
(D) 90

💬 Discuss

✅ Correct Answer: (D) 90

Published by Manisha Agrawal ⭐ 9.34K Points at 16-Jun-2021 02:11 am in Concrete Technology

Q. The weight of residue should not exceed ……. for OPC.

(A) 10 %
(B) 20 %
(C) 30%
(D) 40%

💬 Discuss

✅ Correct Answer: (A) 10 %

Published by Manisha Agrawal ⭐ 9.34K Points at 16-Jun-2021 02:11 am in Concrete Technology

Q. For consistency test vicat plunger having ……. dia and …….. Length is used.

(A) 15 mm & 45 mm
(B) 10 mm & 50 mm
(C) 20 mm & 60mm
(D) Any of above

💬 Discuss

✅ Correct Answer: (B) 10 mm & 50 mm

Published by Manisha Agrawal ⭐ 9.34K Points at 16-Jun-2021 02:11 am in Concrete Technology

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