AIPMT 2006 | Structure of Atom Question 47 | Chemistry

AIPMT 2006

MCQ (Single Correct Answer)

-1

Given : The mass of electron is 9.11 $$ \times $$ 10^$$-$$31 kg, Planck constant is 6.626 $$ \times $$ 10^$$-$$34 J s, the uncertainty involved in the measurement of velocity within a distance of 0.1 $$\mathop A\limits^ \circ $$ is

5.79 $$ \times $$ 10⁵ m s^$$-$$1

5.79 $$ \times $$ 10⁶ m s^$$-$$1

5.79 $$ \times $$ 10⁷ m s^$$-$$1

5.79 $$ \times $$ 10⁸ m s^$$-$$1

AIPMT 2005

MCQ (Single Correct Answer)

-1

The energy of second Bohr orbit of the hydrogen atom is $$-$$328 kJ mol^$$-$$1; hence the energy of fourth Bohr orbit would be

$$-$$ 41 kJ mol^$$-$$1

$$-$$82 kJ mol^$$-$$1

$$-$$164 kJ mol^$$-$$1

$$-$$1312 kJ mol^$$-$$1

AIPMT 2004

MCQ (Single Correct Answer)

-1

The frequency of radiation emitted when the electron falls from n = 4 to n = 1 in hydrogen atom will be (Given ionization energy of H = 2.18 $$ \times $$ 10^$$-$$18 J atom^$$-$$1 and h = 6.625 $$ \times $$ 10^$$-$$34 J s)

1.54 $$ \times $$ 10¹⁵ s^$$-$$1

1.03 $$ \times $$ 10¹⁵ s^$$-$$1

3.08 $$ \times $$ 10¹⁵ s^$$-$$1

2.00 $$ \times $$ 10¹⁵ s^$$-$$1

AIPMT 2003

MCQ (Single Correct Answer)

-1

The velocity of Planck's constant is 6.63 $$ \times $$ 10^$$-$$34 J s.

The velocity of light is 3.0 $$ \times $$ 10⁸ m s^$$-$$1. Which value is closest to the wavelength in nanometers of a quantum of light with frequency of 8 $$ \times $$ 10¹⁵ s^$$-$$1 ?

2 $$ \times $$ 10^$$-$$25

5 $$ \times $$ 10^$$-$$18

$$4 \times {10^1}$$

3 $$ \times $$ 10⁷

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