Home › B.Tech Civil › civilengineering › Water for Concrete › Per §3.4, sea water has an average salinity of a…
Per §3.4, sea water has an average salinity of approximately:
A{'text': 'About 0.5 percent dissolved salts', 'label': 'A'}
B{'text': 'About 3.5 percent dissolved salts', 'label': 'B'}
C{'text': 'About 1.5 percent dissolved salts', 'label': 'C'}
D{'text': 'About 8 percent dissolved salts', 'label': 'D'}
Answer & Solution
Correct answer: B. {'text': 'About 3.5 percent dissolved salts', 'label': 'B'}
1. §3.4 reads: 'Sea water has a salinity of about 3.5 percent.'
2. Of this, about 78 percent is sodium chloride and about 15 percent is chloride and sulphate of magnesium.
_Source: IGNOU ET-522 Block-1 Unit-3 Water, §3.4, p. 43_
Related questions
Per §3.4, sea water typically reduces the 28-day strength of concrete by the order of:Per §3.4, sea water is most strictly to be AVOIDED for use as mixing water in:Per §3.3.5, an addition of approximately 0.20 percent sugar by weight of water in the mix Per Table 3.2, the recommended pH range of mixing water for concrete is:Per Table 3.2, the tolerable limit on TOTAL DISSOLVED SALTS in mixing water for concrete iPer §3.3.2, which of the following salts in mixing water is described as 'completely destrPer §3.3.1, suspended particles in mixing water do NOT affect the strength of concrete up Per §3.3, the most reliable test for the suitability of a doubtful water for concrete is: