Concrete Technology Mock Test 3

10%

Question 1 of 10

1. Damp proofing is cheaper in the beginning, but leads to more expensive problems later on.

True

False

Question 1 of 10

Question 2 of 10

2. A maximum value of ___ percent is allowed for WBM base course in Indian conditions.

Question 2 of 10

Question 3 of 10

3. What is the permissible limits for construction of organic matter in water?

3000mg/l

200mg/l

2000mg/l

500mg/l

Question 3 of 10

Question 4 of 10

4. The addition of the admixture to the mix __________ the surface tension.

Higher

Don’t affect

Lowers

No change

Question 4 of 10

Question 5 of 10

5. What is the permissible limits for construction of inorganic matter in water?

200mg/l

3000mg/l

500mg/l

2000mg/l

Question 5 of 10

Question 6 of 10

6. Los Angeles machine consists of circular drum of internal diameter ________ mm and length ________ mm.

520, 520

520, 700

700, 700

700, 520

Question 6 of 10

Question 7 of 10

7. Water proofing admixtures are available in powder, paste or liquid and gaesous form.

False

True

Question 7 of 10

Question 8 of 10

8. A value less than 10 signifies an exceptionally _________ while above 35 would normally be regarded as _________

Weak aggregates, strong aggregates

Strong aggregates, strong aggregates

Weak aggregates, weak aggregates

Strong aggregates, weak aggregates

Question 8 of 10

Question 9 of 10

9. To neutralize 200 ml sample of water should not require more than _________ ml of 0.1 normal NaOH.

Question 9 of 10

Question 10 of 10

10. With regard to the curing water, identify the incorrect statement.

The presence of tannic acid and iron compounds is objectionable

Water is suitable for mixing is also suitable for curing

Iron and organic matter are responsible for staining

Curing water shouldn’t produce objectionable stains on the surface

Question 10 of 10