Question 3 :
To increase the pH value of neutral solution, we should add :

Question 4 :
The metal oxide which can react with acid as well as alkali is :

Question 5 :
Select the acid which contains four hydrogen atoms in it :

Question 7 :
When an acid reacts with a base what compounds are formed?

Question 8 :
<table> <tr><th>Column A</th> <th>Column B</th> </tr> <tr><td>1. Acid salt</td> <td>a.Ferrous ammonium sulphate </td> </tr><tr><td>2. Double salt</td> <td>b.Contains only ions</td> </tr><tr><td>. Ammonium hydroxide solution</td> <td>.Sodium hydrogen sulphate</td> </tr><tr><td>4. Dilute hydrochloric acid</td> <td>d.Contains only molecules</td> </tr><tr><td>. Carbon tetrachloride</td> <td>e.Contains ions and molecules</td> </tr></table>

Question 9 :
Hydrogen ions produced by acid exist in which of the following form?

Question 15 :
Water contains more H⁺ ions than OH^- ions. So, water is

Question 17 :
CuSO{tex}_4{/tex}.5H{tex}_2{/tex} on treating with concentrated sulphuric acid, this salt changes from blue to white.

Question 22 :
On passing excess of {tex}CO_2 {/tex} gas in an aqueous solution of calcium carbonate, milkiness of the solution

Question 24 :
If the pH value of a solution is 6, then solution will be of what type?

Question 27 :
Which of the following metals can form bases when treated with water.

Question 28 :
During ionization metals lose electrons, this change can be called :

Question 29 :
If the pH value of a solution is 0 (zero), then solution will be of what type?

Question 35 :
The formation of a salt from an acid and a base involves the combination of................... from the acid and the...................from the....................to form....................... molecules.

Question 36 :
Which one of the following will not produce an acid when made to react with water ?

Question 39 :
The salt which in solution gives a pale green precipitate with sodium hydroxide solution and a white precipitate with barium chloride solution is :

Question 45 :
A particular solution contains molecules and ions of the solute so it is a :

Question 47 :
Which of the following are indicators to indicate presence of acids and alkalies.

Question 50 :
<table><tr><th>Column A</th> <th>Column B</th> </tr><tr><td>1. Acid salt</td> <td>a.Sodium potassium carbonate</td> </tr><tr><td>2. Mixed salt</td> <td>b.Alum</td> </tr><tr><td>3. Complex salt</td> <td>c.Sodium carbonate</td> </tr><tr><td>4. Double salt</td> <td>d.Sodium zincate</td> </tr><tr><td>5. Normal salt</td> <td>e.Sodium hydrogen carbonate</td> </tr></table>