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(d) Hydrogen
(a) Carbon dioxide
(a) I and II
(c) Immediately a brick effervescence occur
(b) more than 7
(c) Sod. bicarbonate solution > water > lemon juice
(d) red, green, blue
(d) Put a drop of solution on pH paper using dropper
(c) NaOH
(b) Ammonium hydroxide solution
When did hcl reacts with zn metal the gas liberated is
(d) Hydrogen
(d) Hydrogen
See lessA colourless and odourless gas is liberated when hydrochloric acid is added to solution of sodium carbonate. the name of gas is_
(a) Carbon dioxide
(a) Carbon dioxide
See lessA student added Zn granules to dil HCl and made following observations: – (I) The surface of Zn become black (ii) A colourless gas evolved which burns with pop/sound (iii) The solution remains colurless
(a) I and II
(a) I and II
See lessDil HCl is added to sodium carbonate. It is observed that:-
(c) Immediately a brick effervescence occur
(c) Immediately a brick effervescence occur
See lessIf we add some sodium carbonate in distilled water, the pH of solution will bea-
(b) more than 7
(b) more than 7
See lessFour student- ‘A’, ‘B’, ‘C’ and D measured pH value of water, lemon juice and sodium bicarbonate solution. The student who has expressed correct pH values in decreasing order.
(c) Sod. bicarbonate solution > water > lemon juice
(c) Sod. bicarbonate solution > water > lemon juice
See lessThe colour obtained on pH paper for highly acid basic and neutral solutions are respectively.
(d) red, green, blue
(d) red, green, blue
See lessThe correct method of finding the pH of solution is-
(d) Put a drop of solution on pH paper using dropper
(d) Put a drop of solution on pH paper using dropper
See lessOn putting a drop of liquid on a pH paper a student observer a small patch of blue color on pH paper. The liquid is most probably-
(c) NaOH
(c) NaOH
See lessA compound x in aqueous solution turns red litmus solutions into blue identify ‘X’
(b) Ammonium hydroxide solution
(b) Ammonium hydroxide solution
See less