For testing compressive and tensile strength of cement, the cement mortar is made by mixing cement and standard sand in the proportions of___________________?

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Which of the following trees yields hard wood ?

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The initial setting time for ordinary Portland cement as per IS specifications should not be less than_____________?

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The most common admixture which is used to accelerate the initial set of concrete is______________?

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The type of roof suitable in plains where rainfall is meagre and temperature is high is______________?

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The term string is used for______________?

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