हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 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

प्रश्न

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
जोड़ियाँ मिलाइएँ
Advertisements

उत्तर

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
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 8: The d-and f-Block Elements - Multiple Choice Questions (Type - I) [पृष्ठ ११३]

APPEARS IN

एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
अध्याय 8 The d-and f-Block Elements
Multiple Choice Questions (Type - I) | Q 56 | पृष्ठ ११३

संबंधित प्रश्न

Explain why is Fe3+ more stable than Fe2+?


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?


Calculate the ‘spin only’ magnetic moment of \[\ce{M^{2+}_{( aq)}}\] ion (Z = 27).


How would you account for the following? 

Transition metals and their compounds act as catalysts.


Explain why Zn2+ salts are white whereas Cu2+ salts are coloured.


When acidified \[\ce{K2Cr2O7}\] solution is added to \[\ce{Sn^{2+}}\] salts then \[\ce{Sn^{2+}}\] changes to ______.


Answer the following question:

Which element of the first transition series has highest third ionisation enthalpy?


On strong heating AgNO3, the gases evolved are:-


Mercury is the only metal liquid at room temperature due to its:-


Among the following pairs of ions, the lower oxidation state in aqueous solution is more stable than the other in:-


On adding NaOH, solution to the aqueous solution of K2CrO7 the colour of the solution changes from


A complex in which dsp2 hybridisation takes place is ______.


How is the variability in oxidation states of transition metals different from that of p-block elements?


Consider the following standard electrode potentials (E° in volts) in aqueous solution:

Element M3+/M M+/M
Al - 1.66 +0.55
Tl + 1.26 -0.34

Based on these data, which of the following statements is correct?


In the ground state of atomic Fe (Z = 26), the spin-only magnetic moment is ______ × 10-1 BM.
(Round off to the nearest integer).

[Given: `sqrt3 = 1.73, sqrt2 = 1.41`]


Complete the following reaction and justify that it is a disproportionation reaction:

\[\ce{3MnO^{2-}4 + 4H^+ -> \underline{}\underline{}\underline{}\underline{} + \underline{}\underline{}\underline{}\underline{} + 2H2O}\]


Consider the following standard electrode potential values:

\[\ce{Sn^{2+}_{ (aq)} + 2e^- -> Sn_{(s)}}\]; E0 = −0.14 V

\[\ce{Fe^{3+}_{ (aq)} + e^- -> Fe^{2+}_{ (aq)}}\]; E0 = +0.77 V

What is the cell reaction and potential for the spontaneous reaction that occurs?


Write the ionic equation for reaction of KI with acidified KMnO4.


Account for the following:

Zirconium (Zr) and Hafnium (Hf) are difficult to separate.


Describe the oxidising action of potassium dichromate and write the ionic equation for its reaction with iron (II) solution.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×