a) Increases strengthb) Makes cement soundc) Increases setting timed) Acts as flux Answer: dExplanation: Iron ...
View QuestionExcess of Alkali in cement results in:
a) Dry cement pasteb) Efflorescencec) Less plasticityd) Unsound cement Answer: bExplanation: Efflorescence is the formation ...
View QuestionWhich of the following imparts greenish grey colour to cement?
a) Calcium silicateb) Calcium aluminatec) Calcium aluminate ferrited) Calcium carbonate Answer: cExplanation: Calcium silicate and ...
View QuestionWhich of the following adds a quick-setting property to cement?
a) Magnesium oxideb) Silicon dioxidec) Iron oxided) Aluminium oxide Answer: dExplanation: Aluminium Oxide or Alumina ...
View QuestionWhat effect does calcium sulphate have on cement?
a) Retards setting actionb) Acts as fluxc) Imparts colourd) Reduces strength Answer: aExplanation: Calcium sulphate ...
View QuestionDeficiency of lime in cement leads to:
a) Unsound cementb) Disintegration of cementc) Quick setting of cementd) Expansion of cement Answer: cExplanation: ...
View QuestionWhat is the most dominant constituent of cement?
a) Silicab) Limec) Magnesiad) Alumina Answer: bExplanation: Cement contains about 60-65% of lime. Silica constitutes ...
View QuestionWhat is the depth the needle in Vicat apparatus should penetrate into the cement paste in consistency test?
a) 33-35 cm from bottom of the mouldb) 33-35 mm from top of the mouldc) 33-35 cm from ...
View QuestionGreen cement is:?
a) Green coloured cementb) Cement mixed with plant productsc) Cement mixed with recycled materialsd) Cement mixed with green ...
View QuestionUse of coarser cement particles leads to:
a) Low durabilityb) Higher strengthc) Low consistencyd) Higher soundness Answer: aExplanation: For coarser particles, hydration ...
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