Question

The sequence of ploughing by M.B. Plough includes A. Lifting the furrow slice B. Cutting the furrow slice C. Pulverizing the furrow slice D. Inverting the furrow slice Choose the correct answer from the options given below:

• A. A, B, D, C
• B. B, A, D, C
• C. B, A, C, D
• D. C, D, B, A

Hint:

Functions of mould board plough: \[ \boxed{ \text{Cut} \rightarrow \text{Lift} \rightarrow \text{Invert} \rightarrow \text{Pulverize} } \] Main parts:
• Share
• Mould board
• Landside

Answer 1

The Correct Option is B

Concept: A mould board (M.B.) plough is a primary tillage implement used for:
• Cutting soil
• Lifting soil
• Turning soil
• Pulverizing soil The soil slice undergoes several sequential operations while moving over the plough body.

Step 1: Cutting of furrow slice. The share of the plough first cuts the soil:
• Horizontally
• Vertically This separates the furrow slice from the soil mass. Thus: \[ \boxed{ \text{First operation} = B } \]

Step 2: Lifting of furrow slice. After cutting:
• The mould board starts lifting the soil slice
• Soil moves upward along curved surface Thus: \[ \boxed{ \text{Second operation} = A } \]

Step 3: Inversion of furrow slice. As soil continues moving:
• The mould board twists the furrow slice
• Soil gets inverted
• Weeds and residues get buried Thus: \[ \boxed{ \text{Third operation} = D } \]

Step 4: Pulverization of furrow slice. Finally:
• Soil clods break
• Pulverization occurs
• Soil becomes loose and aerated Hence: \[ \boxed{ \text{Fourth operation} = C } \]

Step 5: Writing the complete sequence. Correct sequence becomes: \[ \boxed{ B,\; A,\; D,\; C } \]

Step 6: Comparing with options. Option (A): Incorrect order. Hence: \[ \boxed{ \text{Option (A) is incorrect} } \] Option (B): \[ B,\; A,\; D,\; C \] This matches the correct sequence. Hence: \[ \boxed{ \text{Option (B) is correct} } \] Option (C): Incorrect arrangement. Hence: \[ \boxed{ \text{Option (C) is incorrect} } \] Option (D): Incorrect sequence. Hence: \[ \boxed{ \text{Option (D) is incorrect} } \] Final Conclusion: Sequence of operations in mould board ploughing is: \[ \boxed{ \text{Cutting} \rightarrow \text{Lifting} \rightarrow \text{Inverting} \rightarrow \text{Pulverizing} } \] Hence the correct answer is: \[ \boxed{ (B) } \]