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Subject :NSO    Class : Class 7

Read the given statements regarding the various types of reactions.
I. Reaction of sodium chloride with silver nitrate is an example of neutralisation reaction.
II. The process of depositing a layer of chromium on iron is called galvanisation.
III. When baking soda is mixed with lemon juice, bubbles are formed due to evolution of CO2 gas.
IV. Hydrogen gas is evolved when vinegar is added to baking soda.
Select the correct option from the following.

True statement(s) False statement(s)
A I, IV II, III
B I, II, IV III
C II, III I, IV
D III I, II and IV


chromium is also used in galvanisation

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