Question Text
Question 4 :
If $H^{+}$ion concentration of a solution is increasedby $10$ times, its $pH$ will :<br>
Question 8 :
Which of the following methods is adopted for preparing dilute solution of ${ H }_{ 2 }S{ O }_{ 4 }$?
Question 12 :
If tartaric acid is not added in baking powder, the cake will taste bitter due to te presence of -
Question 15 :
Four solutions A, B, C and D when tested with universal indicator showed pH as $4, 11, 7$ and $9$ respectively. Which one of the four solutions is neutral?<br/>
Question 16 :
The solution of bleaching powder in water is always a clear solution.<br/>
Question 17 :
Which part of tooth, made up of calcium phosphate, is the hardest substance in the body?
Question 19 :
Effervescence is seen when a bottle of soda water is opened.
Question 20 :
The acid present in the body of red ant is ________.<br/>
Question 22 :
Which colour appears when few drops of phenolphthalein put into test tube contains lime water?
Question 23 :
In which of the following reactions does conc.${ H }_{ 2 }S{ O }_{ 4 }$ act as an oxidising agent?
Question 24 :
When the soil is too basic, plants do not grow well in it. To improve its quality what must be added to the soil?
