Raw Material Storage and Handling Questions and Answers

Answer: C

Correct answer: recording the lot number of every delivery against each batch made

Traceability is a record linking material to product: which delivery went into which batch, so that when a fault appears the affected product can be identified and the responsible material found. Testing the finished product detects a problem without locating its cause, a single supplier reduces variety without providing a link, and retained samples support an investigation but only if the records say which sample to look at.

Answer: D

Both are true and the reason gives the purpose: without a retained sample the only evidence is the supplier's own certificate, and the material itself has long since been consumed in production. A retention period of a year or so covers most claims.

Answer: A

Iron shows as a dark speck or a discoloured glaze at concentrations far too low to affect any other property, so the tolerance is very much tighter than for the other three. Dedicated plant for white bodies follows directly.

Answer: B

Moisture pickup shifts the weighed mass, segregation shifts the particle size distribution and contamination introduces new phases, and all three reach the fired ware. The store is part of the process, not merely a warehouse.