Select the odd one out: Strontium – 89, Strontium – 90, Radium – 223, Iodine – 123.
Strong odour in swimming pool is due to .................... .
The fixed number of molecules of water in alum is .................... .
Select the odd one out: Soap, Toothpaste, Baking soda, Curd.
Substance used to make hard water soft is .................... .
The molecular formula for baking soda is .................... .
What is the chemical formula of baking soda?
Melting point of NaCl is .................... .
What is the primary component of natural gas?
Salt obtained from certain type of rock is called .................... .
What is the chemical name of common salt?
Which of the following is a non-metallic element essential for human bone formation?
The .................... % aqueous solution of salt is called brine.
Bleaching powder is also called .................... .
Chlorine gas is a strong .................... agent.
Select the odd one out: Na2CO3.10H2O, Na2SO4.10H2O, BaCl2.2H2O, CaOCl2
Select the odd one out: Na2SO4, K3PO4, MgBr2, HCl.
Bleaching powder is .................... in colour.
Which gas is released during the process of photosynthesis?
.................... is known as chloride of lime.
Which substance is commonly used as a disinfectant in swimming pools?
Soap is .................... in nature.
Select the odd one out: Sodium sulphate, Barium chloride, Magnesium sulphate, Bleaching powder.
NaHCO3 is also called as .................... .
Rock salt is .................... in colour.
The molten state of NaCl is also called as .................... .
Molecular formula for magnesium bromide is .................... .
During electrolysis of NaCl in the fused state .................... is formed at cathode.
Select the odd one out: Boron-10, Iodine – 131, Cobalt – 60, Iodine – 123.
Baking soda is
