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प्रश्न
Fill in the blank
Magnesia is used in making __________.
उत्तर
Magnesia is used in making refractory bricks.
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संबंधित प्रश्न
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
When copper oxide and dilute hydrochloric acid react, colour changes to ____________.
An aqueous solution with pH = 1 is ___________.
pH of H2O is ____________.
Ag2S reacts with H2SO4 to form ____________.
Equal volumes of hydrochloric acid and sodium hydroxide solutions of same concentration are mixed and the pH of the resulting solution is checked with a pH paper. What would be the colour obtained?
Explain the role of pH in our digestive system.
The pH value of neutral solution is ______.
The pH of stomach fluid is ______.
pH stands for ______ in a solution.
The white enamel coating of our teeth is ______.
You are given pure water to test the pH value using pH ______ paper. It shows colour.
A solution turns the colour of turmeric to reddish brown. If the same solution is poured on universal indictor, its colour would change to ______.
Acid present in tomato is ______.
List the role of each of the following in our digestive system:
- Hydrochloric acid
- Trypsin
- Muscular walls of stomach
- Salivary amylase
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?
Rohit has solution X, Y and Z that has pH 2, 7 and 13 respectively.
Which solution will liberate ammonia gas when reacted with ammonium chloride?
