Most Popular Questions & Answers For ICSE Class 10 Chemistry

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Indranil sengupta

Aug 5, 2013

Do basic solutions also have H⁺(aq) ? Why are they basic ?

Ans: When a base is dissolved in water then it will produce H⁺ ions as wells as OH⁻ ions.
if H⁺ ion concentration is more than OH⁻ ion then the solution is acidic...

Answer (2)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Chitravijith

Aug 26, 2015

what is basicity of an acid? Explain in detail

Basicity of an acid refers to the number of ionisable hydrogen ions(H+) produced when the acid dissolves in water.

Answer (2)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Ketan Krishna Mishra

Mar 22, 2015

what is aqua regia

Aqua regia is a mixture of concentrated nitric acid and concentrated hydrochloric acid....

Answer (1)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Indranil sengupta

Aug 5, 2013

HCl, HNO₃, C₂H₅OH, C₆H₁₂O₆ all contain H atoms but 3 only HCI and HNO₃ show acidic character. Why ?

Ans: It is because of the reason that in HCl, HNO₃ there is availability of acidic hydrogens (H⁺ ions).That is complete cations and anions formed, so that they are treated as acids....

Answer (1)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Indranil sengupta

Aug 5, 2013

Is PbO₂, a base or not ? Comment.

Ans: PbO₂ is a weakly basic oxide in nature.

Answer (1)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Vatsala Prasad

Jun 5, 2015

What is the difference between Hydroxide and Hydroxyl ion?

Hydroxide ion refers to OH group with negative charge and is present in ionic compounds like NaOH, KOH etc.Whereas hydroxyl group refers to OH functional group without negative charge and is binded to covalent ...

Answer (1)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Indranil sengupta

Aug 5, 2013

You have been provided with three test tubes. One of them contains distilled water and the other two have an acidic solution and a basic solution respectively. lf you are given only red litmus paper, how will you identify the contents of each test tube?

Ans: Using red litmus paper it is possible to find base among the given as the colour of red litmus will change to blue in presence bases only. So it is difficult to find the distilled wa...

Answer (1)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Indranil sengupta

Aug 5, 2013

What effect does the concentration of [H₃O+] ion have on solution ?

Ans: Increase in the concentration of H₃O⁺ will increase the acidic nature of the solution.

Answer (1)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Rhishikesh

Jul 21, 2013

how to make litmus solution?

mixture of green and blue algae

Answer (2)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Uttam mazumder

Jul 25, 2013

a compound X is an important ingradient of an antacid.It is also used in fire extegusers.Identified X

Ans: The compound is sodium bi carbonate as it is used as an important ingredient of an antacid because it neutralizes stomach acids. And also used in fire extinguishers as it produces carbon d...

Answer (1)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Indranil sengupta

Aug 5, 2013

Do basic solutions also have H⁺(aq) ? Why are they basic ?

Ans: When a base is dissolved in water then it will produce H⁺ ions as wells as OH⁻ ions.
if H⁺ ion concentration is more than OH⁻ ion then the solution is acidic...

Answer (2)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Chitravijith

Aug 26, 2015

what is basicity of an acid? Explain in detail

Basicity of an acid refers to the number of ionisable hydrogen ions(H+) produced when the acid dissolves in water.

Answer (2)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Ketan Krishna Mishra

Mar 22, 2015

what is aqua regia

Aqua regia is a mixture of concentrated nitric acid and concentrated hydrochloric acid....

Answer (1)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Indranil sengupta

Aug 5, 2013

HCl, HNO₃, C₂H₅OH, C₆H₁₂O₆ all contain H atoms but 3 only HCI and HNO₃ show acidic character. Why ?

Ans: It is because of the reason that in HCl, HNO₃ there is availability of acidic hydrogens (H⁺ ions).That is complete cations and anions formed, so that they are treated as acids....

Answer (1)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Indranil sengupta

Aug 5, 2013

Is PbO₂, a base or not ? Comment.

Ans: PbO₂ is a weakly basic oxide in nature.

Answer (1)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Vatsala Prasad

Jun 5, 2015

What is the difference between Hydroxide and Hydroxyl ion?

Answer (1)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Indranil sengupta

Aug 5, 2013

You have been provided with three test tubes. One of them contains distilled water and the other two have an acidic solution and a basic solution respectively. lf you are given only red litmus paper, how will you identify the contents of each test tube?

Ans: Using red litmus paper it is possible to find base among the given as the colour of red litmus will change to blue in presence bases only. So it is difficult to find the distilled wa...

Answer (1)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Indranil sengupta

Aug 5, 2013

What effect does the concentration of [H₃O+] ion have on solution ?

Ans: Increase in the concentration of H₃O⁺ will increase the acidic nature of the solution.

Answer (1)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Rhishikesh

Jul 21, 2013

how to make litmus solution?

mixture of green and blue algae

Answer (2)

Class-X

Chemistry

OLD_Acids, Bases and Salts

Uttam mazumder

Jul 25, 2013

a compound X is an important ingradient of an antacid.It is also used in fire extegusers.Identified X

Answer (1)

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Academic Questions & Answers Forum

Do basic solutions also have H⁺(aq) ? Why are they basic ?

what is basicity of an acid? Explain in detail

what is aqua regia

HCl, HNO₃, C₂H₅OH, C₆H₁₂O₆ all contain H atoms but 3 only HCI and HNO₃ show acidic character. Why ?

Is PbO₂, a base or not ? Comment.

What is the difference between Hydroxide and Hydroxyl ion?

You have been provided with three test tubes. One of them contains distilled water and the other two have an acidic solution and a basic solution respectively. lf you are given only red litmus paper, how will you identify the contents of each test tube?

What effect does the concentration of [H₃O+] ion have on solution ?

how to make litmus solution?

a compound X is an important ingradient of an antacid.It is also used in fire extegusers.Identified X

Do basic solutions also have H⁺(aq) ? Why are they basic ?

what is basicity of an acid? Explain in detail

what is aqua regia

HCl, HNO₃, C₂H₅OH, C₆H₁₂O₆ all contain H atoms but 3 only HCI and HNO₃ show acidic character. Why ?

Is PbO₂, a base or not ? Comment.

What is the difference between Hydroxide and Hydroxyl ion?

You have been provided with three test tubes. One of them contains distilled water and the other two have an acidic solution and a basic solution respectively. lf you are given only red litmus paper, how will you identify the contents of each test tube?

What effect does the concentration of [H₃O+] ion have on solution ?

how to make litmus solution?

a compound X is an important ingradient of an antacid.It is also used in fire extegusers.Identified X

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Academic Questions & Answers Forum

Do basic solutions also have H+(aq) ? Why are they basic ?

what is basicity of an acid? Explain in detail

what is aqua regia

HCl, HNO3, C2H5OH, C6H12O6 all contain H atoms but 3 only HCI and HNO3 show acidic character. Why ?

Is PbO2, a base or not ? Comment.

What is the difference between Hydroxide and Hydroxyl ion?

You have been provided with three test tubes. One of them contains distilled water and the other two have an acidic solution and a basic solution respectively. lf you are given only red litmus paper, how will you identify the contents of each test tube?

What effect does the concentration of [H3O+] ion have on solution ?

how to make litmus solution?

a compound X is an important ingradient of an antacid.It is also used in fire extegusers.Identified X

Do basic solutions also have H+(aq) ? Why are they basic ?

what is basicity of an acid? Explain in detail

what is aqua regia

HCl, HNO3, C2H5OH, C6H12O6 all contain H atoms but 3 only HCI and HNO3 show acidic character. Why ?

Is PbO2, a base or not ? Comment.

What is the difference between Hydroxide and Hydroxyl ion?

You have been provided with three test tubes. One of them contains distilled water and the other two have an acidic solution and a basic solution respectively. lf you are given only red litmus paper, how will you identify the contents of each test tube?

What effect does the concentration of [H3O+] ion have on solution ?

how to make litmus solution?

a compound X is an important ingradient of an antacid.It is also used in fire extegusers.Identified X

Do basic solutions also have H⁺(aq) ? Why are they basic ?

HCl, HNO₃, C₂H₅OH, C₆H₁₂O₆ all contain H atoms but 3 only HCI and HNO₃ show acidic character. Why ?

Is PbO₂, a base or not ? Comment.

What effect does the concentration of [H₃O+] ion have on solution ?

Do basic solutions also have H⁺(aq) ? Why are they basic ?

HCl, HNO₃, C₂H₅OH, C₆H₁₂O₆ all contain H atoms but 3 only HCI and HNO₃ show acidic character. Why ?

Is PbO₂, a base or not ? Comment.

What effect does the concentration of [H₃O+] ion have on solution ?