Chemistry
A few drops of universal indicator is added to four colourless solutions, A, B, C and D having pH 2, 10, 9 and 7, respectively. Which of the following test tube is labelled with incorrect colour.
- A
- B
- C
- D
Related Questions
The reddish brown coloured gas formed when nitric acid reacts with carbon is
- N2O5
- N2O4
- NO2
- N2O3
Ammonia can be obtained by adding water to
- ammonium chloride
- ammonium nitride
- magnesium nitride
- magnesium nitrate
In the electrolysis of alumina, cryolite is added to
- lower the melting point of alumina
- decrease the electrical conductivity
- minimize the anode effect
- remove impurities from alumina
Reaction of zinc metal with sodium hydroxide will lead to the formation of
- sodium zincate
- sodium chloride
- zinc hydroxide
- zinc aluminate