मराठी

Choose the Correct Answer from the Options Given Below : - Chemistry

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प्रश्न

Choose the correct answer from the options given below :
Which one is colourless anion?

पर्याय

  • \[\ce{HCO^-_3}\]

  • \[\ce{Cr 20^2-_7}\]

  • \[\ce{Cr O^2-_7}\]

  • \[\ce{Mn O^-_4}\]

MCQ

उत्तर

\[\ce{HCO^-_3}\] is colourless anion.

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Action of Alkalis on Metal Oxides
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पाठ 4: Analytical Chemistry - Exercise 2 [पृष्ठ ८६]

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फ्रँक Chemistry - Part 2 [English] Class 10 ICSE
पाठ 4 Analytical Chemistry
Exercise 2 | Q 6.2 | पृष्ठ ८६

संबंधित प्रश्‍न

Name a solution that will separate the component of the following mixture: CaO from PbO


Name a solution that will separate the component of the following mixture: CuO from ZnO


Sodium hydroxide solution is added first in a small quantity, then in excess to the aqueous salt solutions of copper (II) sulphate, zinc nitrate, lead nitrate, calcium chloride and iron (III) sulphate. Copy the following table and write the colour of the precipitate in (i) to (v) and the nature of the precipiatate (soluble or insoluble) in (vi) to (x)

Aqueous salt Solution Colour of Participitate when NaOH is added in a samll quantity Nature of precipitate(soluble or insoluble) when NaOH added in excess
Copper (II) Solution    
Zinc nitrate    
Lead nitrate    
Calcium chloride    
Iron(III) sulphate    

Sodium hydroxide solution is added to solution A. A white precipitate is formed which is insoluble in excess sodium hydroxide solution. What is the metal ion present in solution A?


When an ammonium hydroxide solution is added to solution B, a pale blue precipitate is formed. This pale blue precipitate dissolves in excess ammonium hydroxide giving an inky blue solution. What is the cation present in solution B?


When an ammonium salt is warmed with sodium hydroxide solution, a gas is evolved. State three ways in which you could identify this gas.


Write a balanced equation of a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.


Write balanced equation for a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.


Which of the following about oxides is correct?


Write balanced equations for a coloured metallic oxide which dissolves in alkalis to yield colourless solutions.


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