Important Paper Civil Engineering

1. In which type of concrete there is absence of calillary passages and there is no transmission of water by capillary action:
a. No fines concrete
b. Pre cast concret
c. Light weight concrete
d. Pre stressed concrete
ans (a)
2. Water cement ratio is usually exlressed in :
a. Litres of water required per bag of Cement
b. Litres of water required per kg of cement
c. m of water required per bag of Cememt
d. m of water required per kg of cement
ans (b)
3. Under which condition highest water cement ratio us used ?
a. Heavy section such as piers, foundation etc. exposed to alternate wetting and drying.
b. Hydraulic structure exposed tp rain and snow.
c. Heavy section such as piers foundations etc. protected against rain and frost.
d. Light structural members exposed to alternate wetting and drying.
ans (a)
4. As the cement sets and hardens, it generaters heat. This is called
a. Heat of hydration
b. Latent heat
c. Heat of vaporisation
d. Sensible heat
ans (a)
5. Fineness test of Cement given us an estimate of :
a. rate of hydration
b. Durability of concrete
c. workability of concrete
d. heat of hydration
ans (a)
6. The standard consistency test is done in a
a. Blaine's apparatus
b. Le-Chatelier's apparatus
c. Vane apparatus
d. Vicat' apparatus
 ans (d)
7. The test strength of the sample is taken as the Average of the strength of
a. 2 specimens
b. 3 specimens
c. 4 specimens
d. 5 specimens
ans (b)
8. During compaction the quantity of water at which the maximum density is obtained is known as -
a. Half saturated soil
b. Water content
c. Saturated soil
d. Optimum moisture content
ans (d)
9. For the complete Hydration of cement the necessary ratio of w/c should be-
a. Morethan 0.25 but less than 0.35
b. Morethan 0.45 but less than 0.60
c. Less than 0.25
d. More than 0.35 but lessthan 0.45
ans (d)
10.  Which of the following methid may be used for getting a morr workable concrete ?
a. By increasing cement content.
b. By decreasing water cement ratio.
c. B y using angular aggregates in place of roumded  ones.
d. By reducing the size of aggregates.
ans (d)
For More Important Paper Civil Engineering - Click Here