12 Questions
Which gas is responsible for rekindling a glowing splinter?
O2
What color does Cl2 turn moist blue litmus paper?
Blue Black
Which acid gas turns acidified potassium permanganate solution from pink to colorless?
SO2
What happens when acidic gases are passed through lime water?
Turns it milky
Which gas forms a white ppt. with AgNO3 and the ppt. is soluble in NH4OH but insoluble in dilute acids?
NH3
Which cation forms a chalky white ppt. with NaOH but is soluble to form a colorless solution?
Pb2+
What color precipitate forms when Fe3+ ions are present in a solution?
Chalky white
When lead acetate paper is exposed to a gas after adding dilute H2SO4, which color change is observed?
Turns silvery black
Which ion forms a dense white fume with ammonia when reacted with MnO2 and concentrated H2SO4?
Cl-
What is the color of the flame when a potassium ion is tested in a flame test?
Lilac
What gas is evolved when dilute H2SO4 is added to a sulfide ion and heated?
Rotten egg smelling gas
When ammonium ions are present and alkali is added and heated, what gas is evolved?
Pungent smelling gas
This quiz tests your knowledge on how different gases react with various chemicals. Can you identify gases based on their reactions with substances like CuSO4, cobalt chloride, lime water, and potassium permanganate? Challenge yourself to recognize neutral and acidic gases based on observed color changes and reactions.
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