Question

calle U
omposion reaction'. For example, heating lead nitrate.
Multiple Choice Questions
1. Rusting of an iron nail is a .....
..... reaction.
a. combination b. displacement C. decomposition
d. double displacement
d. double
2. The following change is observed on dipping a litmus paper in aqueous solution of Mgo.
a. Red litmus turns blue, therefore MgO is alkaline.
b. Blue litmus turns red, therefore MgO is acidic.
c. No colour change in litmus paper, therefore MgO is neutral.
d. Litmus paper is decolourised, therefore MgO acts as bleaching agent.
3. What is the colour of a solution formed on dipping a piece of zinc in dilute sulphuric acid ?
La colourless
b. colourless solution turns red c. black d. red​

Answer 1

Answer:

ige6q9tluztj hsdjfstia bzfahzvage,fa5qdfaeu ,x4udn ns8t