Chemistry:2003:CBSE:[Delhi]:Set-II
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Q1
Write all the four quantum numbers of the electron in the outermost shell of rubidium (Atomic no.=37). Marks:1View AnswerAnswer:
Question not in syllabus. -
Q2
What type of hybridisation is associated with N in NH3? What is the expected bond angle in NH3? Marks:1View AnswerAnswer:
Hybridisation associated with N in NH3 is sp3. The expected bond angle in NH3 109.28º -
Q3
Mention one property which is caused due to presence of F-centre in the solid. Marks:1View AnswerAnswer:
The solids having F-centres become coloured. -
Q4
Comlpete the nuclear equation out of syllabus 41H1 + 4He2 → Marks:1View AnswerAnswer:
Not in the XII syllabus. -
Q5
Write IUPAC name of the complex Na3[Cr(OH)2F4]. Marks:1View AnswerAnswer:
Sodiumtetrafluorodihydroxochromate(III) -
Q6
Mention two main functions of lipid. Marks:1View AnswerAnswer:
Not in the XII syllabus. -
Q7
Why is the equilibrium constant K related to only Eºand not E (cell)? Marks:1View AnswerAnswer:
Eº is measured at 25ºC and its value is fixed whereas value of E(cell) changes with change in temperature. Therefore K is related to Eº not E(cell). -
Q8
Write IUPAC name of the complex [Cr (H2O)5Cl]Cl2 . Marks:1View AnswerAnswer:
Pentaaquachlorochromium(III)chloride -
Q9
How is ammonia molecule a good ligand? Marks:1View AnswerAnswer:
Ligand donates one or more pair of electrons to central metal atom. Since ammonia molecule has 1 lone pair of electrons is acts as good ligand. -
Q10
Complete the nuclear equation 42 Mo96+ 1H2 → 43Te97 + ….. out of syllabus Marks:1View AnswerAnswer:
Not in the XII syllabus.
