English
Karnataka Board PUCPUC Science 2nd PUC Class 12

Match the solutions given in Column I and the colours given in Column II. Column I (Aqueous solution of salt) Column II (Colour) (i) FeSOX2⋅7HX2O (a) Green (ii) NiClX2⋅4HX2O (b) Light pink

Advertisements
Advertisements

Question

Match the solutions given in Column I and the colours given in Column II.

Column I
(Aqueous solution of salt)
Column II
(Colour)
(i) \[\ce{FeSO2.7H2O}\] (a) Green
(ii) \[\ce{NiCl2.4H2O}\] (b) Light pink
(iii) \[\ce{MnCl2.4H2O}\] (c) Blue
(iv) \[\ce{CoC12,6H2O}\] (d) Pale green
(v) \[\ce{Cu2 Cl2}\] (e) Pink
  (f) Colourless
Match the Columns
Advertisements

Solution

Column I
(Aqueous solution of salt)
Column II
(Colour)
(i) \[\ce{FeSO2.7H2O}\] (d) Pale green
(ii) \[\ce{NiCl2.4H2O}\] (a) Green
(iii) \[\ce{MnCl2.4H2O}\] (b) Light pink
(iv) \[\ce{CoC12,6H2O}\] (e) Pink
(v) \[\ce{Cu2 Cl2}\] (f) Colourless
shaalaa.com
  Is there an error in this question or solution?
Chapter 8: The d-and f-Block Elements - Multiple Choice Questions (Type - I) [Page 113]

APPEARS IN

NCERT Exemplar Chemistry Exemplar [English] Class 12
Chapter 8 The d-and f-Block Elements
Multiple Choice Questions (Type - I) | Q 56 | Page 113

RELATED QUESTIONS

The elements of 3d transition series are given as: Sc Ti V Cr Mn Fe Co

Answer the following: Which element shows only +3 oxidation state?


In 3d series (Sc to Zn), which element has the lowest enthalpy of atomisation and why?


Describe the oxidising action of potassium dichromate and write the ionic equation for its reaction with iodide.


How would you account for the following:

Cobalt (II) is stable in aqueous solutions, but in the presence of complexing reagents, it is easily oxidised.


Following are the transition metal ions of 3d series:

Ti4+, V2+, Mn3+, Cr3+

(Atomic numbers: Ti = 22, V = 23, Mn = 25, Cr = 24)

Answer the following:

1) Which ion is most stable in an aqueous solution and why?

2) Which ion is a strong oxidising agent and why?

3) Which ion is colourless and why?


Give reasons Iron has the higher enthalpy of atomization than that of copper.


Transition metals with highest melting point is ____________.


Maximum magnetic moment is shown by ____________.


Interstitial compounds are formed when small atoms are trapped inside the crystal lattice of metals. Which of the following is not the characteristic property of interstitial compounds?


Ionisation enthalpies of Ce, Pr and Nd are higher than Th, Pa and U. Why?


The second and third rows of transition elements resemble each other much more than they resemble the first row. Explain why?


Identify the metal and justify your answer.

\[\ce{MO3F}\]


On the basis of the figure given below, answer the following questions:

  1. Why Manganese has lower melting point than Chromium?
  2. Why do transition metals of 3d series have lower melting points as compared to 4d series?
  3. In the third transition series, identify and name the metal with the highest melting point.

A metallic ion 'M' reacts with chloride ion to form white precipitate which is readily soluble in aqueous ammonia. Identify 'M'?


Account for the following:

Copper has an exceptionally positive `"E"_("M"^(2+)//"M")^0` value.


Why are interstitial compounds well known for transition metals?


Describe the oxidising action of potassium dichromate and write the ionic equation for its reaction with H2S.


Decide which of the following atomic numbers are the atomic numbers of the inner transition elements:

29, 59, 74, 95, 102, 104


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×