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प्रश्न
State one observation for each of the following :
A small piece of zinc is added to dilute hydrochloric acid
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उत्तर
Bubbles of H2 gas observed.
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संबंधित प्रश्न
Three solutions P, Q and R have pH value of 3.5, 5.2 and 12.2 respectively. Which one of these is a:
1) Weak acid?
2) Strong alkali?
When a piece of limestone reacts with dilute HCl, a gas X is produced. When gas X is passed through lime water then a white precipitate Y is formed. On passing excess of gas X, the white precipitate dissolves forming a soluble compound Z.
- What are X, Y and Z?
- Write equations for the reactions which take place:
- When limestone reacts with dilute HCl.
- When gas X reacts with lime water to form white precipitate Y.
- When excess of gas X dissolves white precipitate Y to form a soluble compound Z.
Give the names and formulae of two strong bases and two weak bases.
Name an acid used as an eyewash.
Carbonic acid gives an acid salt but hydrochloric acid does not. Explain.
What do you understand by the strength of an acid? On what factors does the strength of an acid depend?
Choose the correct answer from the options given below
Which of them occurs in solid state?
Write a balanced reaction for the following conversions (A, B, C, D)
\[\ce{Fe→[A]FeCl2 →[B]FeCO3→[C]Fe(NO3)2→[D]Fe(OH)2}\]
Acids are corrosive in nature.
Which of the following is acidic in nature?
