Q1 of 36 Page 1

List any two observations when Ferrous Sulphate is heated in a dry test tube?

OR


Identify the products formed when 1 mL of dil. Hydrochloric acid is added to 1g of Sodium metal?


The observations made when Ferrous Sulphate is heated in a dry test tube


1. The Initial light green colour changes to reddish-brown colour


2. Colourless gas is evolved


3. Gas with choking smell is evolved


(Any two)



OR


2Na + 2HCl → 2NaCl + H2


When 1 mL of dil. Hydrochloric acid is added to 1g of Sodium metal Sodium Chloride and Hydrogen gas are formed.


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Which of the following is not observed in a homologous series? Give reason for your choice.

a) Change in chemical properties


b) Difference in -CH2 and 14u molecular mass


c) Gradation in physical properties


d) Same functional group


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