Q. Calculate standard consistency(%) when 100 ml of water is added in 1000 g of cement.

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Q. For making cement paste, what is the amount of water we need?

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Q. What is the normal consistency for OPC?

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Q. The relative humidity of laboratory should be ___________ for standard consistency.

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Q. In cement hardening process ___________ instants are very important.

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Q. What is the initial setting time?

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Q. Initial setting time of OPC should not be less than ___________

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Q. Final setting time of cement should not be more than _______

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Q. In the soundness test, the whole assembly is immersed in water for _______

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Q. What is the final setting time?

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Q. Initial setting time of Low Heat Cement should not be less than _____________

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Q. If t1=Time at which water is first added to cement, t2=Time when needle fails to penetrate 5 mm to 7 mm from bottom of the mould, t3=Time when the needle makes an impression but the attachment fails to do so, then what is initial setting time?

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Q. If t1=Time at which water is first added to cement, t2=Time when needle fails to penetrate 5 mm to 7 mm from bottom of the mould, t3=Time when the needle makes an impression but the attachment fails to do so, then what is final setting time?

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Q. What is the capacity of a measuring cylinder?

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Q. Portland cement is composed of four major oxides (CaO, SiO₂, Al₂O₃, Fe₂O₃ ≥90%).

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Q. Insoluble Residue mainly comes from which compound?

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Q. Loss on Ignition (L.O.I.) is the loss in weight of cement after being heated to _____________

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Q. C₄AF is not a true compound.

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Q. On cooling below 1250°C, C₃S decomposes ____________

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Q. Gypsum reacts with ____________ to form calcium sulfo aluminates and calcium sulfo ferrite.

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