SSC JE Civil 5 Jun 2024 Shift 1 Paper

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Question : 111 of 200
 
Marks: +1, -0
Which of the following precautions need to be adopted for concreting in sub-zero temperature?
(i) Pre-heating of materials of concrete
(ii) Economical heating of materials of concrete
(iii) Admixtures of anti-freezing materials
(iv) Electrical heating of concrete mass
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