Chemistry Practicals Quiz

EDTA is ___________

• Hexadentate ligand

• Monodentate ligand

• Heptadentate ligand

• Bidentate ligand

What is the complex formed at the end point in the determination total hardness of water expt

• Mg-EBT

• Ca-EBT

• Ca-EDTA

• Mg-EDTA

Chemical formula of Mohr's salt is

• FeSO₄(NH₄)₂SO₃

• FeSO₄(NH₄)₃SO₄.7H₂O

• FeSO₄(NH₄)₂SO₄.6H₂O

• Fe(NH₄)₂SO₄.6H₂O

^{What is the role of Mercuric sulphate in COD test?}

• To precipitate nitate and nitrites

• catalyses the oxidation of straight chain organic compounds

• To precipiate chloride ions

• To enhance the oxidising capacity of pottasium dichromate

What is the white precipitate formed at the end point in Determination of Cu in brass expt

• Cupric iodide

• Cuprous iodide

• Cupric nitrate

• Startch iodine complex

What is the brownish gas evolved when brass dissolved in conc.HNO₃

• NO

• NO₂

• N₂O

• CO₂

What type of indicator is used in determination of percentage of Fe in TMT bar?

• Potassium ferricyanide

• Potassium ferrocyanide

• Internal indicator

• External indicator

In TMT bar expt,How can you reduce ferric ion to ferrous ion state?

• By boiling with urea

• By adding Stannous chloride

• By the addition Mercuric chloride

• By adding Conc.HCl to TMT bar solution

What is the fuel used in Flame photometry expt?

• LPG

• Oxygen

• Compressed air

• Oxidant

Why only Group 1 and 2 metals can be determined by Flame photometry?

• Because of they are light weight

• Because of their low electron affinity

• Because of their small size

• Because of their low ionization energy