(i). Tomato juice is likely to be sour in taste because its pH is less than 7. Substances with a pH below 7 are acidic, and acids typically taste sour
(ii). A strong acid ionizes completely in water, releasing a large number of \( \text{H}^+ \) ions.
Example:\[\text{HCl} \rightarrow \text{H}^+ + \text{Cl}^-.\]
A weak base partially ionizes in water, releasing fewer \( \text{OH}^- \) ions.
Example:\[\text{NH}_4\text{OH} \rightleftharpoons \text{NH}_4^+ + \text{OH}^-.\]
(iii). Acid rain lowers the pH of water bodies, making the water acidic. This affects aquatic life because:
• It damages the gills of fish and other aquatic organisms.
• It reduces the availability of essential minerals by dissolving toxic metals like aluminum.
‘दीवार खड़ी करना’ मुहावरे का वाक्य में इस प्रकार प्रयोग करें कि अर्थ स्पष्ट हो जाए।
Select from the following a statement which is not true about the burning of magnesium ribbon in air:
Analyze the significant changes in printing technology during 19th century in the world.
निम्नलिखित विषय पर संकेत बिंदुओं के आधार पर लगभग 120 शब्दों में एक अनुच्छेद लिखिए |
डिजिटल इंडिया
संकेत बिंदु -
डिजिटल इंडिया क्या है
डिजिटल होने के लाभ
सरकार द्वारा उठाए गए कदम