Question

Given below are two statements:
Statement (I): Chute spillways carry the flow down the steep slopes through a lined channel rather than by dropping the water in a free overfall.
Statement (II): On steep slopes, chutes are more economical than series of drop structures to take the flow down the slope.
In light of the above statements, choose the most appropriate answer from the options given below.

• A. Both Statement (I) and Statement (II) are correct.
• B. Both Statement (I) and Statement (II) are incorrect.
• C. Statement (I) is correct but Statement (II) is incorrect.
• D. Statement (I) is incorrect but Statement (II) is correct.

Hint:

Recall what a chute spillway physically is and compare its construction cost to multiple drop structures.

Answer 1

The Correct Option is A

Step 1: Picture the two spillway types being compared: a free overfall (water drops off a crest into the air) versus a chute (water is guided down a lined channel that follows the ground slope).
Step 2: Statement (I) is simply the working definition of a chute spillway, so it holds.
Step 3: For economy, think about what a series of drop structures on a steep slope needs: multiple crest walls, multiple stilling basins, more material and labour. A single continuous chute avoids this repetition, so it costs less on steep terrain, confirming Statement (II).
Step 4: Since both descriptions agree with standard spillway engineering, neither statement is false.
\[\boxed{\text{Both Statement (I) and Statement (II) are correct}}\]