BUILDING MATERRIALS PYQ WINNER

.

• A

• B

• C

• D

(41/2017)

Pozzolana is essentially a siliceous material containing clay upto

• 20%

• 40

• 60

• 80

.: (139/2017)

The alloy in duralumin with largest content is :

A. Magnesium

B. Copper

C. Manganese

D. None of these

• A

• B

• C

• D

. (155/2010)

The cement becomes unsound by the presence of excess

A. Magnesia

B. Lime

C. All of these

D. Sulphur

• A

• B

• C

• D

(66/2013)

The impact test are used to determine :

A. Tenacity

B. Toughness

C. Shear strength

D. Ductility

• A

• B

• C

• D

(210/2008)

A concrete having a slump of 70 mm is termed as

A. Dry

B. Plastic

C. Semi plastic

D.Flowing

• A

• B

• C

• D

(48/201700

In order to dry the quarry sap of a

freshly quarried stone it should be

exposed to open air for a period of

A. One month

B. Two years

C. Four months

D. Six to twelve months

• A

• B

• C

• D

(210/2008)

Finer the cement

A. More is the surface area

B. All of these

C. Lesser the amount of waterrequired for constant slump

D. Higher the rate of hydration

• A

• B

• C

• D

. (61/2020)

The permissible stress in compression of M30 concrete in bending as per IS 456-2000 is

A. 12 N/mm2

B. 30 N/mm2

C. 15 N/mm2

D. 10 N/mm2

• A

• B

• C

• D

Answer explanation

: (170/2016)

Which of the following test measure the hardness of road aggregates ?

A. Crushing test

B. Soundness test

C. Abrasion test

D. Impact test

• A

• B

• C

• D