Which gas is evolved when acids react with metals?
Which gas is evolved when acids react with metals?
Which gas is evolved when acids react with metals? Read More »
Which gas is evolved when acids react with metals?
Which gas is evolved when acids react with metals? Read More »
Farmers neutralise the effect of acidity of the soil by adding
Farmers neutralise the effect of acidity of the soil by adding Read More »
Which among the following is not a base?
Sodium carbonate is a basic salt because it is a salt of
Sodium carbonate is a basic salt because it is a salt of Read More »
A teacher gave two test tubes to the students, one containing water and the other containing sodium hydroxide.
To protect tooth decay, one is advised to brush the teeth regulary. The ingredient of the paste which checks tooth decay is:
If a few drops of a concentrated acid accidentally spills over the hand of a student, what should be done?
Which of the following gives the correct increasing order of acidic strength?
Which of the following gives the correct increasing order of acidic strength? Read More »
A sample of soil is mixed with water and allowed to settle. The clear supernatant solution turns the pH paper yellowish-orange. Which of the following would change the colour of this pH paper to greenish- blue?
PH scale of a neutral solution is