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A first class brick when immersed in cold water for 24 hours should not absorb water more than

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Correct Answer: Option B
A first-class brick is characterized by its high quality and durability.

It is required that when such a brick is immersed in cold water for 24 hours, it should not absorb water more than 20% of its dry weight.

This specification ensures the brick has good strength and resistance to weathering.

Hence, the correct answer is Option B: 20%.
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3 Comments
Riju Chakraborty
Riju Chakraborty 4 months ago
1st Class brick → 20%
2nd Class brick → 22%
3rd Class brick→ 25%
TECH LALIT
TECH LALIT 2 years ago
According to Nepal standard option A is best answer
Santosh Kumar
Santosh Kumar 7 years ago
for 1st class brick-(10-15)% and for 2nd class brick-(16-20)%