PYQSide ExamsMy practice

Structure of Atom · Question 54

AIPMT 2003MCQEasy📈 Topic in 0% papers+4−1
1

The value of Planck's constant is 6.63 10-34 J s. The velocity of light is 3.0 108 m s-1. Which value is closest to the wavelength in nanometers of a quantum of light with frequency of 8 1015 s-1 ?

  1. 2 10-25
  2. 5 10-18
  3. 4 101
  4. 3 107

Answer

(3) 4 101

Solution

c =

⇒ = c = 3.0 108 m s-18 1015 s-1

⇒ = 3.75 10-8 m

⇒ = 37.5 nm 4 101 nm

(Planck's constant is not needed for the wavelength.)

Answer: (3)

AIPMT 2003

Keep practising — Structure of Atom

2

In hydrogen atom, energy of first excited state is -3.4 eV. Then find out K.E. of same orbit of hydrogen atom

  1. +3.4 eV
  2. +6.8 eV
  3. -13.6 eV
  4. +13.6 eV
AIPMT 2002
3

23592U, nucleus absorbs a neutron and disintegrates into 13954Xe, 9438Sr and x so, what will be product x?

  1. 3-neutrons
  2. 2-neutrons
  3. -particle
  4. -particle
AIPMT 2002
4

The following quantum numbers are possible for how many orbitals : n = 3, l = 2, m = +2 ?

  1. 1
  2. 2
  3. 3
  4. 4
AIPMT 2001
5

If a abX species emits first a positron, then two and two particles and in the last, one is also emitted and gets converted to cdY species. So correct relation is

  1. c = a - 12, d = b - 5
  2. c = a - 5, d = b - 1
  3. c = a - 6, d = b - 0
  4. c = a - 4, d = b - 2
AIPMT 2001
6

For given energy, E = 3.03 10-19 Joules corresponding wavelength is (h = 6.626 10-34 J sec, c = 3 108 m/sec)

  1. 65.6 nm
  2. 6.56 nm
  3. 3.4 nm
  4. 656 nm
AIPMT 2000
7

Isoelectronic species are

  1. CO, CN-, NO+, C22-
  2. CO-, CN, NO, C2-
  3. CO+, CN+, NO-, C2
  4. CO, CN, NO, C2
AIPMT 2000

All Structure of Atom PYQs →

PDFDownload Structure of Atom PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Chemistry chapters
Physical ChemistrySome Basic Concepts of ChemistryStructure of AtomStates of MatterThermodynamicsEquilibriumRedox ReactionsSolid StateSolutionsElectrochemistryChemical KineticsSurface Chemistry
Inorganic ChemistryClassification of Elements and Periodicity in PropertiesChemical Bonding and Molecular StructureHydrogens-Block Elementsp-Block Elements (Group 13 & 14)Environmental ChemistryGeneral Principles of Isolation of Elementsp-Block Elements (Group 15–18)d- and f-Block ElementsCoordination Compounds
Organic ChemistryOrganic Chemistry – Some Basic Principles and TechniquesIsomerismHydrocarbonsHaloalkanes and HaloarenesAlcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAminesBiomoleculesPolymersChemistry in Everyday LifePrinciples Related to Practical Chemistry