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Consider the following statements:
1. About 25% of alumina in brick earth imparts the plasticity necessary for moulding bricks into required shape.
2. Iron pyrite present in brick earth preserves the form of the bricks at high temperatures.
3. Presence of weeds in brick earth makes the bricks unsound.
Which of these statements are correct
  • a)
    1 and 2
  • b)
    1 and 3
  • c)
    2 and 3
  • d)
    1, 2 and 3
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Consider the following statements:1. About 25% of alumina in brick ear...
Iron pyrites in bricks helps to get crystallized. And during burning it disintegrates the bricks. So it is very low in amount.
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Most Upvoted Answer
Consider the following statements:1. About 25% of alumina in brick ear...
Brick Earth Composition

Brick earth is a type of soil that is used for making bricks. It is composed of various types of minerals and organic matter. Some of the minerals that are present in brick earth are alumina, silica, iron oxide, and lime. The organic matter in brick earth is composed of weeds and other plant matter.

Statement 1: About 25% of alumina in brick earth imparts the plasticity necessary for moulding bricks into required shape.

Alumina is a mineral that is present in brick earth. It imparts plasticity to the soil, which is necessary for moulding bricks into the required shape. This is because alumina has the ability to form a gel-like substance when it is mixed with water. This gel-like substance makes the soil sticky and easy to mould. The ideal percentage of alumina in brick earth is around 25%. If the percentage of alumina is too high, the soil becomes too sticky and difficult to mould. If the percentage of alumina is too low, the soil becomes too sandy and the bricks will not hold their shape.

Statement 2: Iron pyrite present in brick earth preserves the form of the bricks at high temperatures.

Iron pyrite is a mineral that is often found in brick earth. It has the ability to preserve the form of the bricks at high temperatures. This is because iron pyrite has a high melting point and does not break down at high temperatures. This property of iron pyrite makes it an important component of brick earth.

Statement 3: Presence of weeds in brick earth makes the bricks unsound.

Weeds are a type of organic matter that is present in brick earth. They can have a negative impact on the quality of bricks. This is because weeds contain moisture, which can cause the bricks to crack and break. Weeds can also create voids in the soil, which can weaken the structure of the bricks. Therefore, it is important to remove weeds from brick earth before using it for making bricks.

Conclusion

Based on the above discussion, it can be concluded that statement 1 and statement 3 are correct. The correct option is B.
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Consider the following statements:1. About 25% of alumina in brick earth imparts the plasticity necessary for moulding bricks into required shape.2. Iron pyrite present in brick earth preserves the form of the bricks at high temperatures.3. Presence of weeds in brick earth makes the bricks unsound.Which of these statements are correcta)1 and 2b)1 and 3c)2 and 3d)1, 2 and 3Correct answer is option 'B'. Can you explain this answer?
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