CBA Assessment

CBA Assessment

12th Grade

10 Qs

quiz-placeholder

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CBA Assessment

CBA Assessment

Assessment

Quiz

Engineering

12th Grade

Practice Problem

Hard

Created by

gloria makokha

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following is the main ingredient in Portland cement?

Gypsum

Lime

Clay

Silica

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The initial setting time of ordinary Portland cement is approximately:

  • 15 minutes

  • 30 minutes

  • 45 minutes

  • 60 minutes

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The process of hardening of concrete is known as:

  • Hydration

  • Setting

  • Curing

Mixing

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Bricks are classified as first class if their compressive strength is not less than:

3.5 N/mm²

  • 5.0 N/mm²

  • 7.0 N/mm²

  • 10.0 N/mm²

5.

FILL IN THE BLANK QUESTION

1 min • 1 pt

The maximum temperature used in the kiln for manufacturing cement is about _________ °C.

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following is a metamorphic rock?

  • A) Granite

  • Basalt

  • Marble

  • Limestone

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The fire resistance of concrete is mainly due to:

  • Its density

  • Its thermal conductivity

  • Its moisture content

  • Its non-combustibility

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