Q: To prevent bricks from defects such as shrinkage and warping, which major ingredient is added in the mix during its preparation? ईंटों को सिकुड़ने तथा मुड़ने (warping) जैसे दोषों से बचाने के लिए इसकी तैयार के दौरान मिश्रण से जोड़ा गया प्रमुख अवयव कौन-सा है?
A.
Alumina/एलुमिना
B.
Ferric oxide/फेरिक ऑक्साइड
C.
Lime/चूना
D.
Silica/सिलिका
Correct Answer:
Option D -
Explanations:
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