61⟩ What is the Chemical formula for Epsom salt?
MgSO4. 7H20
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237 Bio Chemistry Questions And Answers
62⟩ Name the family of third ‘A’ group elements
Boron family
63⟩ Give the formula for baking soda.
The formula for baking soda is NaHCO3.
64⟩ Dolomite is the ore of which element
Dolomite is an ore an element magnesium (mg)
Formula (MgCO3 CaCO3)
65⟩ Why the 2A group elements are called Alkaline earth elements?
The elements occur in earth and the oxides of these metals are basic in nature hence the name alkaline earth metals.
66⟩ Which are the most abundant metal and third abundant element in the earth crust?
Aluminium (Al) (7.28%)
67⟩ Which is the least abundant Alkaline earth element?
Radium
68⟩ In 3rd, name ‘A’ group elements which is the Non metal
Boron
69⟩ Bleaching powder is obtained when cl2 is passes through.
Dry Slake lime
CaOCl2+H2OàCa (OH) 2+Cl2
70⟩ What is the name for magnesium per chlorate and what is its formula?
Magnesium per chlorate is called Anhydrone {mg (ClO4)2}
71⟩ Which process is used in welding the gaps in railway tracks?
Gold Schmidt’s alumino thermi process
72⟩ Name the elements for which Cryolite and Pelspar are the ores.
Na3 Al F6àCryolite
K2O.Al2O3.6SiO2 (or) K Al Si3 O8àFelspar
Both are ores of Aluminium
73⟩ Among third A group elements which element is best conductor?
Aluminium (Al)
74⟩ Which elements are present in Electron?
Electron consist of 95 % mg, 5% Zn
75⟩ What is inert pair effect?
The reluctances of ns electrons in the participation of bond formation is called inert pair effect
76⟩ Give the formula of Borax. Borax is chemically called as.
Borax Na2B4O7 10H2O is chemically called as hydrated sodium tetra borate
77⟩ What is the ratio of slaked lime and sand in mortar?
Ratio is 1:3
78⟩ Name the family of fifth ‘A’ group elements.
Nitrogen Family
79⟩ Which is the most reactive element in Nitrogen family?
Phosphorous
80⟩ How do you call fifth, ‘A’ group elements collectively?
Pnicogens
