Which of the following is an incorrect statement ?
A. Coefficient of contraction of a venturimeter is unity
B. Flow nozzle is cheaper than venturimeter but has higher energy loss
C. Discharge is independent of orientation of venturimeter whether it is horizontal, vertical or inclined
D. None of the above statement is incorrect
Answer: Option D

All correct
All correct
None of the above statement is incorrect
None of the above statement is incorrect is Answer
The fact that none of the above statement is correct makes it incorrect which is the required answer
How it is D) bcz all statements are correct
all are correct