The spray bottles used as window or household cleaner or perfume spray works on: __________?

A. Capillary action
B. Bernoulli’s Principle
C. Pascal’s Law
D. Stoke’s Law

Submitted by: Abid Hussain

When we press the top of bottle the pressure at top of the bottle decreases and hence, the velocity of liquid flow increases. Bernoulli’s Principle states that an increase in the speed of a fluid produces a decrease in pressure and that a decrease in the speed of a fluid produces an increase in pressure. The principle states that the total energy of a moving fluid remains constant at all times.

Related Mcqs:

In winter an iron pipe feel colder than a wooden window . This is because wood is_______?
A. Conductor
B. Non-Conductor
C. Semi- Conductor
D. Not a solid while iron is a solid
E. None of these
The vitamin Folate works together with __________ to produce new red blood cells?
A. Vitamin D
B. Vitamin A
C. Vitamin B-12
D. None of the above
Submitted by: Anand Hanjhro
Atomic power plant works on the principle of?
A. fission
B. fusion
C. thermal combustion
D. combined effect of all the above three
Submitted by: Malik Asghar Hussain
A transformer works on the principle of _______________?
A. Self induction
B. Mutual induction
C. Generator
D. Inverter
Submitted by: Malik Asghar Hussain
Photography works by?
A. Capturing the souls of the objects being photographed
B. Capturing light reflected from the objects being photographed
C. Both A & B
D. None of these
Submitted by: Mansoor Ahmed Suhag
A photostat machine works on _____________?
A. electromagnetic image making
B. magnetic image making
C. thermal image making
D. electrostatic image making
Submitted by: Abid Hussain
At night, Plants intake __________ and release __________?
A. Oxygen – Carbon dioxide
B. Carbon dioxide – Oxygen
C. Oxygen – Carbon monoxide
D. None of theseCarbon monoxide – Oxygen
The scientific study of measurement is known as __________?
A. Entomology
B. Metrology
C. Ichthyology
D. Ecology
Submitted by: Kashif Ashraf
Dr. James Watson discovered the structure of DNA in __________?
A. 1953
B. 1955
C. 1957
D. 1857
Submitted by: Saqlain hydar
__________ is the point in solar system at which pressure from the solar wind is equal to the opposing pressure of the interstellar medium.
A. Seliopause
B. Meliopause
C. Heliopause
D. Beliopause
Submitted by: Muhammad Abdullah