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The constituents of porland cement are
Options
(a) CaCO₃+clay+sand
(b) CaCO₃+aluminium silicate
(c) CaCO₃+clay+SiO₂
(d) CaCO₃+gypsum+clay
Correct Answer:
CaCO₃+gypsum+clay
Explanation:
The essential constituents of portland cement are CaO, silica, alumina, magnesium oxide, and ferric oxide. The essential raw materials used are CaCO₃, gypsum and clay. CaCO₃ provides CaO and Clay provides silica as well as alumina and ferric oxide.
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Topics: S and Some P Block Elements
(157)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which one of the following can differentitate between C₂H₅OH and CH₃OH
- Reaction of solid KMnO₄ ith conc.H₂SO₄ produces manganese heptoxide (Mn₂O₇) in
- Which of the following is low boiling liquid
- In a metal oxide, there is 20% oxygen by weight. its equivalent weight is
- Solution of 0.1 N NH₄OH and 0.1 N NH₄Cl has pH 9.25 . Then fine out pKb of NH₄OH
Topics: S and Some P Block Elements (157)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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