Dissociation of Acids in Water

Q.

State the valency of hydroxide ion.

Q.

Which of the following are mineral acids?

1. Sulphuric acid

2. Oxalic acid

3. Citric acid

4. Lactic acid

Q. Two test tubes containing water are labelled A and B. Few drops of hydrochloric acid are added to test tube A and acetic acid to test tube B. Which of the following statements are true regarding the number of $H^{+}$ ions in the test tubes?

1. Both the test tubes have equal number of $H^{+}$ ions
2. None of these
3. Test tube A has more number of $H^{+}$ ions than test tube B
4. Test tube B has more number of $H^{+}$ ions than test tube A

Q. Which of the following statements are true about a cation and an anion?

1. Positively charged ions are called anions.
2. Negatively charged ions are called anions.
3. Positively charged ions are called cations.
4. Negatively charged ions are called cations.

Q.

A species contains 10 electrons and 12 protons. Is it an atom or a cation or an anion?

Q. Which among the following will conduct ​
electricity?​
(A) Dry HCl gas​
(B) Lemon juice​
(C) Baking soda​

Q. Burst the bubbles that contain an Arrhenius acid.

1. $H_{2}S{O}_4$
2. $NaOH$
3. $HN{O}_3$
4. $HCl$
5. $KOH$
6. $N{H}_3$
7. $C{H}_{3}COOH$
8. $H_{2}C{O}_3$

Q.

Why covalent bond does not conduct electricity ?

Q. Two test tubes containing water are labelled A and B. Few drops of hydrochloric acid are added to test tube A and acetic acid to test tube B. Which of the following statements are true regarding the number of $H^{+}$ ions in the test tubes?

1. Test tube B has more number of $H^{+}$ ions than test tube A
2. It cannot be predicted
3. Test tube A has more number of $H^{+}$ ions than test tube B
4. Both the test tubes have equal number of $H^{+}$ ions

Q. The bonds in a water molecule are .

1. non-polar covalent
2. ionic
3. polar covalent
4. metallic

Q. If vapours of dry ammonia gas are brought into contact with red litmus paper, what will happen to the colour of the litmus paper?

1. Litmus paper turns blue
2. Litmus paper turns pink
3. No change in the litmus paper
4. Litmus paper turns yellow

Q. Three test tubes contains different solutions and are labelled as A, B and C. The table below shows the observations when red and blue litmus papers were dipped in these test tubes.
Analyse the table given below and choose the correct options from the following.

$\begin{array}{cccc}& \text{Test tube A}& \text{Test tube B}& \text{Test tube C}\\ \text{Red Litmus}& \text{No change}& \text{No change}& \text{No change}\\ \text{Blue Litmus}& \text{Red}& \text{No change}& \text{Red}\end{array}$

1. The sample in test tube A is acidic
2. The sample in test tube A is neutral
3. The sample in test tube C is acidic
4. The sample in test tube B is neutral

Q. Which of the following substances will release ${\text{H}}^{+}$ ions when dissolved in water?

1. $\text{HCl}$
2. $\text{NaCl}$
3. $\text{NaOH}$
4. ${\text{H}}_2{\text{SO}}_4$

Q. Which among the following will conduct ​
electricity?​
(A) Dry HCl gas​
(B) Lemon juice​
(C) Baking soda​

Q. Two test tubes containing water are labelled A and B. Few drops of hydrochloric acid are added to test tube A and acetic acid to test tube B. Which of the following statements are true regarding the number of $H^{+}$ ions in the test tubes?

1. Both the test tubes have equal number of $H^{+}$ ions
2. None of these
3. Test tube A has more number of $H^{+}$ ions than test tube B
4. Test tube B has more number of $H^{+}$ ions than test tube A

Q.

According to Arrhenius, acid generates _____ ions in water.

1. ${\text{H}}^{+}$

2. ${\text{OH}}^{-}$

3. ${\text{F}}^{-}$

4. ${\text{Cl}}^{-}$

Q.

${\text{H}}^{+}$ ions released by acids combine with water to form ______ ions.

1. ${\text{H}}^{+}$
2. ${\text{H}}_3{\text{O}}^{+}$
3. ${\text{OH}}^{-}$
4. ${\text{H}}_2\text{O}$

Q. An Arrhenius acid is a substance that gives ions in an aqueous solution.

1. ${\text{OH}}^{-}$
2. ${\text{H}}^{+}$
3. ${\text{H}}^{-}$