In dry sand moulding of steel casting, what is the dextrine percentage composition?

In dry sand moulding of steel casting, what is the dextrine percentage composition? Correct Answer 0.5%

In dry sand mouldings of steel castings, the dextrine percentage composition is calculated to be 0.5%. In green sands, the dextrin content is also 0.5%, which is in green sand and in dry sand, the percentage of dextrine is same.
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The casting processes that require expendable moulds are
P. Investment casting
Q. Low pressure casting
R. Shell moulding
S. Slush casting
Assertion A: Slow sand filters are more efficient in removal of bacteria than rapid sand filters.
Reason R: The sand used in slow sand filters is finer than that in rapid sand filters
Select your answer based on the coding system given below:
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