alleryStart learning →A soft drink fizzes when opened as carbonic acid breaks into water and
AHydrogen gas
BNitrogen gas
CCarbon dioxide gas
DOxygen gas in air
Answer & Solution
Correct answer: C. Carbon dioxide gas
Unstable carbonic acid decomposes into water and CO2, and the gas escapes as bubbles.
Keep practising Acids, bases and salts
Browse all Acids, bases and salts questions for Olympiad (Class 7), or explore more Science topics.
Related questions
An acid raises the hydronium concentration in water. What does a base do?Ammonia solution acts as a base though NH3 has no hydroxide. Why?Which statement is true for sodium hydroxide solution in water?In water, the free H+ ion is found as theWhich substance is used in a soda acid fire extinguisher?Calcium burns in chlorine gas. Which salt forms?Zinc oxide reacts with both acids and bases. Such a substance is calledFireworks get their colours mainly from