Construction and Building Materials Mock Test 8

10%

Question 1 of 10

1. The composition of delta metal is _________

3% iron, 37% zinc and 60% copper

37% iron, 60% zinc and 3% copper

3% iron, 60% zinc and 37% copper

60% iron, 3% zinc and 37% copper

Question 1 of 10

Question 2 of 10

2. Which process is used to make the steel soft?

Cementing

Hardening

Nitriding

Annealing

Question 2 of 10

Question 3 of 10

3. X-ray shielding mortar is a lightweight mortar having a bulk density of less than 1500 kg/m³.

False

True

Question 3 of 10

Question 4 of 10

4. The material obtained at the end of the shingling process is called as ________

Fuse

Bloom

Flux

Slag

Question 4 of 10

Question 5 of 10

5. In attrition test used to find the rate of wear of stones, wear should be equal to or less than ___________ for good building stone.

Question 5 of 10

Question 6 of 10

6. The electric furnace used in the electric process to manufacture steel is lined with _________ material.

Basic refractory

Acidic non-refractory

Acidic refractory

Basic non-refractory

Question 6 of 10

Question 7 of 10

7. Which of the following statements about thermosetting plastics is not true?

They are available in a variety of colours

They are durable and strong

It is possible to change their shape on heating

They become rigid on heating

Question 7 of 10

Question 8 of 10

8. Grey pig is produced when the blast furnace is not provided with sufficient fuel while the white pig is produced when the blast furnace is provided sufficiently with fuel.

True

False

Question 8 of 10

Question 9 of 10

9. Ventilation arising from the temperature difference between outside and inside takes place due to ____________ effect.

Stark

Stack

Zeeman

Spark

Question 9 of 10

Question 10 of 10

10. In Winter, the outside air is cool and hence, the process of air conditioning involves filtering, preheating and _____________

Humidification

Circulation

Dehumidification

Condensation

Question 10 of 10