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प्रश्न
Draw neat and labelled diagram of pH scale.
उत्तर
The range of ph values
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संबंधित प्रश्न
Which one of the following types of medicines is used for treating indigestion?
Higher the pH value of a solution, the more ______ it is.
Answer the following:
If pH value of solution ‘A’ is 8, pH value of solution ‘B’ is 7 and pH value of solution ‘C’ is 5.5 then:
Explain the pH scale with the proper diagram.
A solution 'X' gives orange colour when a drop of it falls on pH paper, while another solution 'Y' gives bluish colour when a drop of it falls on pH paper. What is the nature of both solutions? Determine the pH of solutions 'X' and 'Y'.
Tomato is a natural source of which acid?
Which of the following statements is correct about an aqueous solution of an acid and of a base?
(i) Higher the pH, stronger the acid
(ii) Higher the pH, weaker the acid
(iii) Lower the pH, stronger the base
(iv) Lower the pH, weaker the base
Tooth enamel is made up of ____________.
What is the pH range of our body?
Rain is called acid rain when it:
When copper oxide and dilute hydrochloric acid react, colour changes to ____________.
An aqueous solution with pH = 1 is ___________.
Which of the following is used for the dissolution of gold?
pH of H2O is ____________.
Ag2S reacts with H2SO4 to form ____________.
The graph given below depicts a neutralization reaction (acid + alkali → salt + water). The pH of a solution changes as we add an excess acid to an alkali.
Which letter denotes the area of the graph where both acid and salt are present?
Assertion: Fresh milk in which baking soda is added, takes a longer time to set as curd.
Reason: Baking soda decreases the pH value of fresh milk to below 6.
Frothing in Yamuna:
The primary reason behind the formation of the toxic foam is the high phosphate content in the wastewater because of detergents used in dyeing industries, dhobi ghats, and households. Yamuna's pollution level is so bad that parts of it have been labelled 'dead' as there is no oxygen in it for aquatic life to survive.
Predict the pH value of the water of river Yamuna if the reason for froth is the high content of detergents dissolved in it.
The table provides the pH value of four solutions P, Q, R and S.
| Solution | pH value |
| P | 2 |
| Q | 9 |
| R | 5 |
| S | 11 |
Which of the following correctly represents the solutions in increasing order of their hydronium ion concentration?
Which of the following statements is correct about an aqueous solution of an acid and of a base?
- Higher the pH, stronger the acid
- Higher the pH, weaker the acid
- Lower the pH, stronger the base
- Lower the pH, weaker the base
The pH of stomach fluid is ______.
pH stands for ______ in a solution.
The pH value of acids is ______ than 7.
The white enamel coating of our teeth is ______.
Define indicator. Give examples
Mohan has three solutions P, Q and R having a pH of 13, 5 and 2 respectively. Which of the above solutions P, Q or R will react with magnesium to liberate hydrogen gas?
Mohan has three solutions P, Q and R having a pH of 13, 5 and 2 respectively. Which of the above solutions P, Q or R will liberate ammonia gas when it reacts with ammonium chloride?
Mohan has three solutions P, Q and R having a pH of 13, 5 and 2 respectively. Which of the above solutions P, Q or R will contain molecules as well as ions?
