Bee-sting causes pain and irritation as it is
Acidic
Basic
Neutral
Salt
Which is used in soda-acid fire extinguisher?
Sodium hydroxide
Sodium hydrogen carbonate
Potassium hydroxide
Calcium hydroxide
An acid used in the manufacture of glass is:
ascorbic acid
boric acid
phosphoric acid
tartaric acid
Bleaching powder is
Calcium oxychloride
Calcium bicarbonate
Calcium hydride
Calcium oxide
Acid that release more H+ ions easily are said to be
Weak acid
Strong base
Weak base
Strong acid
A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains
NaCl
HCl
LiCl
KCl
Which acid is produced in Stomach, helps in the digestion of food without harming the stomach?
Hydrochloric acid
Sulphuric acid
Nitric acid
Phosphoric acid
2NaOH + MgSO4 ------------› ?
MgO + Na2SO4
Mg(OH)2 + Na2SO4
Mg(OH)2 + Na2O
MgO + Na2O
Acidity of ammonium hydroxide is -
1
2
4
3
Litmus solution is a purple dye, which is extracted from
Bacteria
Fungus
Lichen
Sea-plants
