Subject :NSO Class : Class 7
Which of the following statements are incorrect?
I. Decomposition reactions are generally carried out
by heating or by passing electricity.
II. An oxidising agent removes hydrogen from other
substance.
III. In precipitation reactions, two substances react
in solid state to form a soluble product.
IV. Precipitation and neutralisation reactions are examples of single displacement reaction.
A I and III only
B III and IV only
C II and IV only
D All of these.
Ans 1:
Class : Class 10
B