Question Text
Question 1 :
Translate the following statements into chemical equations and then balance them:
Hydrogen gas combines with nitrogen to form ammonia.
Question 2 :
Identify the substances that are reduced in the following reactions.
$4Na(s) + O_{2}(g) \rightarrow 2Na_{2}O(s)$
Question 4 :
What happens when dilute hydrochloric acid is added to iron filings?
Question 5 :
Identify the substances that are oxidised in the following reactions.
$4Na(s) + O_{2}(g) \rightarrow 2Na_{2}O(s)$
Question 6 :
A solution of a substance 'X' is used for white washing
Name the substance 'X'.
Question 7 :
Write the balanced chemical equation for the following and identify the type of reaction in each case:
Potassium bromide (aq) + Barium iodide (aq) $\rightarrow$ Potassium iodide (aq) + Barium bromide (s)
Question 8 :
A solution of a substance 'X' is used for white washing
Name the substance 'X'.
Question 9 :
Balance the following chemical equations:
$NaOH + H_{2}SO_{4} \rightarrow Na_{2}SO_{4} + H_{2}O$
Question 10 :
Oil and fat containing food items are flushed with nitrogen. Why?
Question 11 :
A solution of a substance 'X' is used for white washing
Write the formula of 'X'.
Question 12 :
Balance the following chemical equations:
$BaCl_{2} + H_{2}SO_{4} \rightarrow BaSO_{4} + HCl$
Question 13 :
A solution of a substance 'X' is used for white washing
Write the formula of 'X'.
Question 14 :
Translate the following statements into chemical equations and then balance them:
Hydrogen gas combines with nitrogen to form ammonia.
Question 15 :
Write the balanced chemical equations for the following reactions:
Aluminium + Copper chloride $\rightarrow$ Aluminium chloride + Copper
