Question:medium

Match List-I with List-II.
List-IList-II
(A) Deep bin(I) Pulse milling
(B) Shallow bin(II) Janssen
(C) Break roll(III) Rankine
(D) CFTRI method(IV) Wheat milling
Choose the correct answer from the options given below:

Show Hint

Think about which pressure theory accounts for wall friction over depth, and which milling step each named process belongs to.
  • (A) - (III), (B) - (II), (C) - (I), (D) - (IV)
  • (A) - (III), (B) - (II), (C) - (IV), (D) - (I)
  • (A) - (II), (B) - (III), (C) - (IV), (D) - (I)
  • (A) - (II), (B) - (III), (C) - (I), (D) - (IV)
Show Solution

The Correct Option is C

Solution and Explanation

Work through the pairs from what each term actually means rather than memorizing the list.

A break roll is a corrugated roller used at the start of wheat flour milling to crack the grain open, so it belongs with wheat milling.

The CFTRI method is a soak treatment for pulses, soaking in oil then water before drying and milling, meant to loosen the seed coat, so it belongs with pulse milling.

For the bin pair, remember that friction along the walls of a tall grain column keeps adding up with depth. Janssen's formula was built to capture that friction build up, so it applies to deep bins. Rankine's formula, borrowed from soil mechanics for shallow retaining structures, ignores that friction build up and suits shallow bins instead.

Combining these, Deep bin with Janssen, Shallow bin with Rankine, Break roll with Wheat milling, CFTRI method with Pulse milling.

\[\boxed{\text{Option 3: (A)-(II), (B)-(III), (C)-(IV), (D)-(I)}}\]
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