Advertisements
Advertisements
प्रश्न
A solution turns red litmus blue, its pH is likely to be ______.
पर्याय
1
4
5
10
उत्तर
A solution turns red litmus blue, its pH is likely to be 10.
Explanation:
A basic solution turns red litmus blue. On the pH scale, bases have values greater than 7, whereas acids have values less than 7. Therefore, the pH of the given solution is likely to be 10.
APPEARS IN
संबंधित प्रश्न
Ammonia is found in many household products, such as window cleaners. It turns red litmus blue. What is its nature?
Name one animal and one plant whose stings contain formic acid (or methanoic acid).
Give two examples each of organic acids and mineral acids.
A white shirt has a yellow stain of curry. When soap is rubbed on this shirt during washing, the yellow stain turns reddish-brown. On rinsing the shirt with plenty of water, the reddish-brown stain turns yellow again.
Name the natural indicator present in curry stain.
A white shirt has a yellow stain of curry. When soap is rubbed on this shirt during washing, the yellow stain turns reddish-brown. On rinsing the shirt with plenty of water, the reddish-brown stain turns yellow again.
Explain the changes in colour of this indicator which take place during washing and rinsing the shirt.
Give the names and formulae of two strong bases and two weak bases.
Write any two important uses of bases.
One of the following does not inject an acidic liquid into the skin through its sting. This is:
(a) honey bee
(b) ant
(c) wasp
(d) nettle leaf hair
Give two examples of the following:
oxy-acid
Name the particles present in :
Weak electrolyte
Give the name and formula of two : Non-volatile acids
How is an acid prepared from a non metal and a base from a metal? Give equation.
Choosing the correct words given in brackets, complete the sentence given below:
A(n) ______ (acid/basic) salt is one in which the hydrogen of an acid has been partially replaced by a ______ (metal/non-metal).
Acid - Define.
Vinu and Priyan take their lunch at school. Vinu eats lemon rice and Priyan eats curd rice. Both lemon rice and curd rice are sour in taste. What is the reason?
The correct way of making a solution of acid in water is to
Which of the following set of substances contain acids?
State whether the following statements are true or false. Correct the false statements.
Lemon water is basic in nature.
Which one of the following acids undergoes complete ionisation?
Bring the soil sample of your area, find out if it is acidic, basic or neutral. Discuss with farmers if they treat the soil in any manner.
