Structure of Atom Test

Result

Structure of Atom Test - 38

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Weekly Quiz Competition

Question 1
4 / -1

The energy required to remove an electron from metal X is E = 3.31 × 10^-20 J. Calculate the maximum wavelength of light that can photo eject an electron from metal X

A
6.01 × 10^-6m

B
3.01 × 10^-3m

C
5.01 × 10^-6m

D
None of these

Solution
Question 2
4 / -1

Energy of one mole of photons of radiation whose frequency is 5 × 10¹⁴ Hz is

A
199.51 kJ mol^-1

B
189.51 kJ mol^-1

C
198.51 kJ mol^-1

D
188.51 kJ mol^-1

Solution
Question 3
4 / -1

Calculate the velocity of an electron having wavelength of 0.15 nm Mass of an electron is 9.109 × 10^-28 g.
(h = 6.626 × 10^-27 erg-s).

A
2.062 × 10^-8 cm∙s^-1

B
2.062 × 10^-15 cm∙s^-1

C
4.84 × 10⁸ cm∙s^-1

D
2.062 × 10^-9 cm∙s^-1

Solution
Question 4
4 / -1

If helium atom and hydrogen molecule are moving with the same velocity, their wavelength ratio will be

A
4 : 1

B
1 : 2

C
2 : 1

D
1 : 4

Solution
Question 5
4 / -1

A particle having a mass of 1.0 mg has a velocity of 3600 km/h. Calculate the wavelength of the particle.
(h = 6.626 × 10^-27 erg-s)

A
6.626 × 10^-28 cm

B
6.626 × 10^-29 cm

C
6.626 × 10^-30 cm

D
6.626 × 10^-31 cm

Solution
Question 6
4 / -1

In an atom, an electron is moving with a speed of 600 m/s with an accuracy of 0.005%. Certainity with which the position of the electron can be located is (h = 6.6 × 10^-34 kg m²s^-1, mass of electron, e_m = 9.1 × 10^-31 kg)

A
1.52 × 10^-4 m

B
5.10 × 10^-3 m

C
1.92 × 10^-3 m

D
3.84 × 10^-3 m

Solution
Question 7
4 / -1

Calculate the wavelength (in nanometer) associated with a proton moving at 1.0 × 10³ms^-1 (Mass of proton = 1.67 × 10^-27 kg and h = 6.63 × 10^-34 Js)

A
0.032 nm

B
0.40 nm

C
2.5 nm

D
14.0 nm

Solution
Question 8
4 / -1

A body of mass x kg is moving with a velocity of 100 ms^-1. Its de-Broglie wavelength is 6.62 × 10^-35 m. Hence, x is
(h = 6.62 × 10^-34 Js)

A
0.1 kg

B
0.25 kg

C
0.15 kg

D
0.2 kg

Solution
Question 9
4 / -1

Which of the following is the correct form of Schrodinger wave equation ?

A

B

C

D

Solution
Question 10
4 / -1

A particle moving with a velocity 10⁶ m/s will have de-Broglie wavelength nearly,
(given, m = 6.62 × 10^-27 kg, h = 6.62 × 10^-34 J-s)

A
10^-9 m

B
10^-13 m

C
10^-19 m

D
1 Å

Solution