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Subject :NSO    Class : Class 5

Four identical syringes were filled with different substances as shown. In which syringe will the plunger not move at all when pushed in ?

A

B

C

D


Can anybody explain me please ?

Ans 1:

Class : Class 6

Ans 2:

Class : Class 5
d

Ans 3:

Class : Class 4

Ans 4:

Class : Class 9
Salt water

Ans 5:

Class : Class 8
B

Ans 6:

Class : Class 5
when salt is added to water its density increases greatly.therefore it is very tough to push the plunger.

Ans 7:

Class : Class 5
tough question

Ans 8:

Class : Class 5
Salt water

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