Subject :NSO Class : Class 7
Following sets of test tubes were made by a class VII science teacher.
She asked the students to find the incorrect statements about the given experimental set-ups.
ABlue litmus solution turns red in test tubes 1 and 3.
BTurmeric solution turns red in test tube 1.
CChina rose indicator turns dark pink in test tubes 2 and 4.
DPhenolphthalein remains colourless in test tubes 2 and 4.
is window cleaner an acid?
Ans 1:
Class : Class 4
ans is supposed to be c
Ans 2:
Class : Class 8
D
Ans 3:
Class : Class 9
HEy i do not know why but in the solution it is written that window cleaner is a aid.. This is wrong , as Window cleaner is ammonium hydroxide , which is a base.
Ans 4:
Class : Class 7
D