B:-ideal fluid
C:-Newtonian fluid
D:-Non-Newtonian fluid
Correct Answer:- Option-B
Question49:-The principle of continuity is based on
A:-law of conservation of energy
B:-law of conservation of mass
C:-law of conservation of momentum
D:-all of the above
Correct Answer:- Option-B
Question50:-The absolute pressure is equal to:
A:-gauge pressure - atmospheric pressure
B:-gauge pressure + vacuum pressure
C:-gauge pressure +atmospheric pressre
D:-Atmospheric pressure -gauge pressure
Correct Answer:- Option-C
Question51:-Which of the following is present in lemon?
A:-carbonic acid
B:-tartaric acid
C:-Oxalic acid
D:-citric acid
Correct Answer:- Option-D
Question52:-Which of the following pair have pH less than 7 7
A:-tea and coffee
B:-gastric juice and NaOH
C:-lemon juice and lime water
D:-sodium carbonate and sodium bicarbonate
Correct Answer:- Option-A
Question53:-When blue litmus is added to dil. HCI
A:-it changes to white
B:-it remains blue
C:-it becomes red
D:-it changes to green colour
Correct Answer:- Option-C
Question54:-A gas is neither combustible nor supporter of combustion, tumms most blue litmus paper red, used in cold drinks.
The gas i
A:-CO
B:-carbon dioxide
C:-hydrogen
D:-chlorine
Correct Answer:- Option-B
Question55:-If we add phenolphthalein to dil.HCI :
A:-The solution tums pink
B:-The solution remains colourless
C:-The solution becomes green
D:-The solution becomes orange red
Correct Answer:- Option-B
Question56:-You are advised not to see the SUN directly with your eye,because the converging light will destroy the :
A:-Retina
B:-Eye-ball
C:-Eye-lens
D:-Pupil
Correct Answer:- Option-A
Question57:-"When physical condition remain the same, the electric current flowing through a conductor is

directly proportional to the potential difference”. This law is called :
A:-Ohm's law
B:-Ampere's law
C:-Coulomb's law
D:-Joule’s law