Question

Pb(NO₃)₂ + 2KI --> PbI₂ + 2KNO₃. What is the colour of PbI₂

Colourless
Blue
Yellow
Black

13. C + O2 ----> CO2, Name the reaction

Synthesis reaction
Combination reaction
Decomposition reaction
Both 1 and 2

14. (NH₄)₂Cr₂O₇ --> Cr₂O₃ + 4H₂O + N₂, What is the colour of Cr₂O₃

Orange
Red
Green
Yellow

15. NH₄Cl --> NH₃ + HCl. In this reaction ammonia is a __ gas

Neutral gas
Acidic gas
Basic gas
None of these​

Answer 1

Explanation:

Yellow

Both 1 and 2

Green

Basic gas

all r in sequence