DIRECTIONS: On the basis of following diagram/picture answer the quest – McqOptions

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1.	DIRECTIONS: On the basis of following diagram/picture answer the questions given below: The diagram shows a vacuum flask and an enlarged view of a section through the flask wall. The main reason for the silvering is to reduce heat transfer by
A.	conduction only
B.	conduction and convection
C.	radiation only
D.	radiation and convection
Answer» D. radiation and convection

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