Dissociation of Bases in Water

Q.

All the alkalis are bases but all bases are not alkalis.
State True or False.

1. True

2. False

Q. All the alkalis are bases but all bases are not alkalis.

1. True
2. False

Q.

A base which is not alkali

1. Caustic potash

2. Copper hydroxide

3. Ammonium hydroxide

Q.

Which of the property is not shown by bases?

1. Bases are soapy in touch

2. Bases dissociate in water to give OH^- ions

3. Bases are bitter in taste

4. Bases turn blue litmus red

Q. All alkali are bases but all bases are not alkali.

1. True
2. False

Q.

All the X are Y but all Y are not X. What are X and Y?

1. X-Alkalis, Y-Bases

2. X-Bases, Y-Alkalis

3. X-Oxides, Y-Acids

4. X-Acids, Y-Alkalis

Q.

Write any three physical properties of bases? With effect on 3 indicators. [5 MARKS]

Q. A substance ‘X' does not dissociate completely into its ions in an aqueous solution. It is bitter in taste and soapy to touch. Substance ‘X’ is a:
(A) Weak acid​
(B) Strong acid​​
(C) Weak base​​
(D) Strong base​​

Q. (a) What are the terms defined by the following?
(ii) A base which is soluble in water.

Q.

Which among the given options is correct with respect to bases?

1. Oil of vitriol is an example of a base
2. Turns blue litmus red
3. Soapy to touch
4. Have a sour taste

Q. Identify the sources of charged species that makes electric current to flow through a circuit.

1. Vinegar
2. Bleach
3. Citrus fruits
4. Wood
5. Soap
6. Oil
7. Molten wax
8. Baking soda

Q. The ionic compound $Ca(OH{)}_2$ on dissociation will give cation X. The charge on this on cation is ___.

1. 1
2. 2
3. 3
4. 4

Q.

What is an alkali?

Q.

A substance 'A' does not dissociate completely into its ions in the aqueous solutions. It is bitter in taste and soapy to touch. Identify the substance A.

1. Strong base

2. Weak base

3. Weak acid

4. Strong acid

Q. A substance ‘X' does not dissociate completely into its ions in an aqueous solution. It is bitter in taste and soapy to touch. Substance ‘X’ is a:

1. Weak base
2. Strong base
3. Weak acid
4. Strong acid

Q. Burst the bubbles that contain an Arrhenius base.

1. $HCl$
2. $Mg(OH{)}_2$
3. $NaCl$
4. $NaOH$
5. $KOH$
6. $N{H}_3$
7. $LiOH$
8. $Ca(OH{)}_2$

Q. Choose the correct option regarding the following statements:

Statement 1: Sodium hydroxide is water soluble.
Statement 2: Copper oxide is an alkali.

1. Only statement 1 is correct.
2. Only statement 2 is correct.
3. Both statements are incorrect.
4. Both statements are correct.

Q.

A substance 'A' does not dissociate completely into its ions in the aqueous solutions. It is bitter in taste and soapy to touch. Identify the substance A.

1. Weak acid

2. Strong acid

3. Weak base

4. Strong base

Q.

Which of the following hydroxide is NOT alkali?

1. Copper hydroxide
2. Sodium hydroxide
3. Ammonium hydroxide
4. Calcium hydroxide