Civil Engineering MCQs

Page No. 295

The main constituent of cement which is responsible for initial setting of cement is_________________?


adicalcium silicate


btricalcium silicate


ctricalcium aluminate


dall of the above


View Answer tricalcium aluminate

The main constituent which imparts hydraulicity to hydraulic lime is______________?


acalcium oxide


b silica


cclay


dwater


View Answer clay

Assertion A : Pure lime takes a long time to develop adequate strength. Reason R : Pure lime has slow hardening characteristics. Select your answer according to the coding system given below ?


aBoth A and R are true and R is correct explanation of A


bBoth A and R are true and R is not a correct explanation of A


cA is true but R is false


dA is false but R is true



Study the following statements. (1) Hydraulic lime is suitable for white washing, (2) Fat lime is suitable for whitewashing, (3) Hydraulic lime is suitable for making mortar, (4) Fat lime is suitable for making mortar. The correct answer is______________?


a(1) and (4)


b(2) and (3)


c(1) and (2)


d(3) and (4)


View Answer (2) and (3)

As per IS specifications, the maximum final setting time for ordinary Portland cement should be_______________?


a30 minutes


b1 hour


c6 hours


d10 hours


View Answer 10 hours

The constituent of cement which is responsible for all the undesirable properties of cement is____________?


adicalcium silicate


b tricalcium silicate


ctricalcium aluminate


dtetra calcium alumino ferrite


View Answer tricalcium aluminate

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


a10 minutes


b30 minutes


c60 minutes


d600 minutes


View Answer 30 minutes

Le Chatelier’s device is used for determining the_______________?


asetting time of cement


b soundness of cement


c tensile strength of cement


dcompressive strength of cement



The main ingredients of Portland cement are________________?


a lime and silica


blime and alumina


csilica and alumina


dlime and iron


View Answer lime and silica

Hydraulic lime is obtained by_______________?


aburning of lime stone


bburning of kankar


cadding water to quick lime


dcalcination of pure clay


View Answer burning of kankar

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