Identify the Following Substance: Gas B that Has an Offensive Smell as of Rotten Eggs.

Identify the following substance:

Gas B that has an offensive smell as of rotten eggs.

One Word/Term Answer

Hydrogen sulphide

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Chapter 9: Practical Work - Exercise 9 (C) [Page 153]

Chapter 9 Practical Work
Exercise 9 (C) | Q 8.2 | Page 153

Fill the following blanks with suitable words :

In a chemical reaction, the sum of the masses of the reactants and the products remains unchanged. This is called ....................

What is the difference between 2H and H₂ ?

What is the significance of the formula of a substance ?

Write down the formulae for the following compounds :

Calcium oxide

An element Z has a valency of 3. What is the formula of oxide of Z ?

Complete the following statement by selecting the correct option :

The correct formula of aluminium oxide is

Correct the following statement:

Formula of iron (lll) oxide is FeO.

Match the following:

Column A	Column B
(a) Pb(NO₃)₂	(i) rotten eggs smell
(b) CO₂	(ii) burns with a pop sound
(c) (NH₄)₂Cr₂O₇	(iii) the suffocating smell of sulphur
(d) HCI	(iv) lime water turns milky
(e) NO₂	(v) crackling sound
(f) O₂	(vi) residue swells up
(g) H₂	(vii) brown gas
(i) H₂S	(viii) supports combustion
(j) SO₂	(ix) fumes with NH₃ solution

Name the element in the compound and give the formula of the following compound:

Phosphoric acid

Name the element in the compound and give the formula of the following compound:

Glauber’s salt

Name the element in the compound and give the formula of the following compound:

Ethane