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Operations Questions with Correct Answers 2025
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What eechemical eereaction eeoccurs eewhen eewater eeand eecement eeare eecombined?
A. Emulsification
B. Hydration
C. Solidification
D. Hydraulic eefusion ee- eeCORRECT eeANSWER ee-Hydration
What eeprocess eemust eebe eeminimized eewhen eestockpiling eeaggregates?
A. Segregation
B. Separation
C. Solidification
D. Disintegration ee- eeCORRECT eeANSWER ee-Segregation
When eea eespecific eeweight eeof eeaggregate eeisEcalled eefor, eewhat eetype eeof eescale eeis eeused?
A. Dial
B. Beam
C. Pressure
D. Balance ee- eeCORRECT eeANSWER ee-Beam
Concrete eemixed eein eea eetransit eemixer eeshould eebe eedelivered eeand eedischarged eewithin ee1 ee1/2 eehours
eeor eebefor eee eethe eedrum eehas eerevolved eewhat eemaximum eenumber eeof eetimes?
A. 100
B. 200
C. 300
D. 400 ee- eeCORRECT eeANSWER ee-300
, Portland eecement eeis eemanufactured eefrom eefinely eeground eelimestone eemixed eewith eewhich eematerials?
1. Clay
2. Shale
3. Marl
4. All eeof eethe eeabove ee- eeCORRECT eeANSWER ee-All eeof eethe eeabove
The eechemical eereaction eebetween eecement eeand eewater eethat eeproduces eeconcrete
is eeknown eeby eewhat eeterm?
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1. Concrete
2. Hydraulics
3. Hydration
4. Evaporation ee- eeCORRECT eeANSWER ee-Hydration
How eeis eelaitance eeproduced eein eeconcrete?
1. Water eecollects eeunder eethe eesurface eeof eethe eecement.
2. Cement eeis eehydrated eewith eesaltwater.
3. Cement eeis eehydrated eewith eeminimum eewater.
4. Cement eeis eehydrated eewith eeexcess eewater. ee- eeCORRECT
eeANSWER ee- eeCement eeis eehydrated eewith eeexcess eewater.
(True eeor eeFalse) eeAggregate eeis eethe eematerial eecombined eewith eecement eeand eewater
to eemake eeconcrete. ee- eeCORRECT eeANSWER ee-True
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Aggregates eeused eein eeconcrete eeoccupy eewhat eepercentage eeof eethe eemixEby eeweight?
1. Between ee90% eeto ee95%