Change set

Pick exam & year, then Go.

Question map
Not attempted Correct Incorrect ★ Bookmarked
Loading…
Q50 (UPPCS/2025) Science & Technology › Basic Science (Physics, Chemistry, Biology)

With reference to 'acid and bases', which of the following statements is/are correct ?
1. Acidic solutions have pH more than 7.
2. Basic solutions have pH less than 7.
Select the correct answer from the code given below :
Code :

Result
Your answer: —  Â·  Correct: A

Explanation

The pH scale is used to determine the acidity or basicity of an aqueous solution. It typically ranges from 0 to 14. The scale is based on the concentration of hydrogen ions (H+) in the solution.

  • Acidic solutions: These have a pH value less than 7. A lower pH indicates a higher concentration of hydrogen ions.
  • Basic (Alkaline) solutions: These have a pH value greater than 7. A higher pH indicates a lower concentration of hydrogen ions.
  • Neutral solutions: Pure water and other neutral solutions have a pH of exactly 7 at 25°C.

Since statement 1 incorrectly claims acidic solutions have pH > 7 and statement 2 incorrectly claims basic solutions have pH < 7, both statements are wrong. Therefore, the correct option is A.

How others answered
Each bar shows the % of students who chose that option. Green bar = correct answer, blue outline = your choice.
Community Performance
Out of everyone who attempted this question.
100%
got it right
✓ Thank you! We'll review this.

SIMILAR QUESTIONS

NDA-II · 2010 · Q85 Relevance score: 1.38

Which among the following statements with regard to pH scale is/are correct? I. It is a logarithmic: scale II. The scale is limited to 0-14 because the ionic product of water is about 10~14. III. The lower the value of pH, the greater is the acidity of the solution. Select the correct answer using the code given below

NDA-I · 2026 · Q81 Relevance score: 0.96

Consider the following statement :

"Acids are substances that dissociate in water to give hydrogen ions H+ (aq), and bases are substances that produce hydroxyl ions OH- (aq)."

The above statement is based on which one of the following concepts?

CDS-II · 2021 · Q25 Relevance score: 0.82

Which of the following statements is/are correct? 1. All the bases are alkali. 2. All alkalis dissolve in water. 3. Alkalis are soapy to touch, bitter in taste and corrosive in nature. Select the correct answer using the code given below :

CDS-I · 2012 · Q105 Relevance score: 0.23

Which one among the following statements is correct ?

CDS-II · 2021 · Q7 Relevance score: 0.19

Which of the following statements about universal indicator is/are true ? 1. It is a mixture of several indicators. 2. It shows different colours at different concentrations of hydrogen ions in solution. 3. It helps to determine the strength of given acid and base in titration. Select the correct answer using the code given below :