Bissoy.com
Doctors Medicines MCQs Q&A

Identify the incorrect statement. a. Acids are sour in taste whereas bases are bitter in taste and soapy to touch. b. Acids turn blue litmus red and bases turn red litmus blue. c. Solutions of substances tat show different colours in acidic, basic and neutral solutions are called indicators. d. An acid and a base neutralise each other to form a salt and a salt is always neutral.

Identify the incorrect statement. a. Acids are sour in taste whereas bases are bitter in taste and soapy to touch. b. Acids turn blue litmus red and bases turn red litmus blue. c. Solutions of substances tat show different colours in acidic, basic and neutral solutions are called indicators. d. An acid and a base neutralise each other to form a salt and a salt is always neutral. Correct Answer d

Concept:

Acids and bases 

Acids Bases
They are sour in taste. they are bitter in taste and soupy to touch 
The pH of acids is below 7. The pH range of bases falls above 7
Acids turn blue litmus red Bases turn red litmus blue.
Examples - Vinegar, lemon juice  Examples - Soup solution, neem, clove

Salt

  • Acids and bases react with each other to form a salt. 
  • This reaction is called a neutralization reaction. 
  • Salts formed can be neutral, acidic, or basic. 
  • It depends upon the strength of the acid or base. 

Indicator

  • Indicators are substances that are used to determine the acidity, neutrality, or alkalinity of aqueous solutions.
  • Acidity and basicity are sometimes referred to as pH indicators since they are related to pH.
  • They are the substances whose solutions produce different colors in acidic basic and neutral solutions.
  • Thus they help in the identification of the pH of the substance in which they are added. 
  • Litmus paper, phenolphthalein, and red cabbage juice are examples of acid-base indicators.

Explanation:

The given four statements are - 

  • a. Acids are sour in taste whereas bases are bitter in taste and soapy to touch - True 
  • b. Acids turn blue litmus red and bases turn red litmus blue. - True 
  • c. Solutions of substances that show different colors in acidic, basic, and neutral solutions are called indicators. - True 
  • d.  An acid and a base neutralize each other to form a salt and salt is always neutral. - False, as the salt can be acidic or basic.

Additional Information

Acids are proton donors Bases are proton acceptors
Acid increases the H+ concentration in an aqueous solution. Bases increase the OH- Concentration in an aqueous solution.

Related Questions

In order to determine acidic, basic or neutral character of solutions, a student tabulated the following results after experimentation. Which of the following observations has been tabulated correctly? Case Test Solution Colour change on red litmus paper Colour change on blue litmus paper Acidic/Basic/Neutral A NaOH No change Red Acidic B Sour Milk Blue No change Neutral C Vinegar No change No change Neutral D Washing soda Blue No change Basic
In order to determine acidic, basic or neutral character of solutions, a student tabulated the following results after experimentation. Which of the following observations has been tabulated correctly? Case Test Solution Colour change on red litmus paper Colour change on blue litmus paper Acidic/Basic/Neutral A NaCl No change Red Acidic B Lime water Blue No change Neutral C Vinegar No change No change Neutral D Washing soda Blue No change Basic
Consider the following statements.
1. Acids are sour in taste and change the colour of blue litmus to red.
2. Bases are bitter and change the colour of red litmus to blue.
3. Litmus is a natural indicator.
Which of the statements given above is/are correct?
Student A rub solid baking soda on dry litmus paper, B rub metal oxide on dry litmus paper, C dip litmus paper in vinegar, D dip litmus paper in aqueous solution of baking soda. The observations were made by student A, B, C, and D should be- Student Effect on dry red litmus paper Effect on dry blue litmus paper A Color Changed to blue No change B No change Color changed to red C No change Color changed to red D Color Changed to blue       Color changed to red The correct observation was made by the student
Which of the following statement(s) is/are CORRECT? I. Acids are sour in taste and generate H+ ions. II. Acids are sour in taste and generate OH- ions. III. Bases are bitter in taste and generate OH- ions.
Which of the following statement(s) is/are CORRECT? I. Acids are sour in taste and generate H+ ions. II. Acids are sour in taste and generate OH– ions. III. Bases are bitter intaste and generate OH– ions.
An acid turns blue litmus red and base turns red litmus blue. A group of student in a laboratory tested a solution with a red litmus paper which remained red with no change. This result shows that the solution is
Acid turns blue litmus red and base turns red litmus blue. A student tested a liquid with a red litmus paper which remained red with no change. This shows that the liquid
Which of the following statement is/are true? I. Acid turns red litmus blue. II. Bases turn blue litmus red.
Which of the following statement(s) is/are CORRECT? I. Bases are soapy to touch. II. Bases generate OH– ions. III. Metal oxides dissolve in water to form Acidic solution.