# Towards Quantum Mechanical Model of the Atom MCQs with FREE PDF

We have the best collection of Towards Quantum Mechanical Model of the Atom MCQs and answer with FREE PDF. These Towards Quantum Mechanical Model of the Atom MCQs will help you to prepare for any competitive exams like: NEET, AIIMS, JEE Mains, JEE Advance, IIT JEE, JIPMER and other Exams at all levels – you just have to practice regularly.

## Towards Quantum Mechanical Model of the Atom MCQs

a) True

b) False

#### 2. As per Heisenberg’s principle of uncertainty, the relation between relative momentum and relative position is __________

a) independent

b) equal

c) directly proportional

d) inversely proportional

a) True

b) False

#### 4. An object has a mass of 6 kg and velocity of 10 m/s. The speed is measured with 5% accuracy, then find out Δx in m.

a) 0.12676 x 10-34

b) 0.1566 x 10-34

c) 0.176 x 10-34

d) 0.276 x 10-34

#### 5. If the kinetic energy of an electron is 5J. Find out its wavelength.

a) 0.313 x 1015 m/s

b) 3.013 x 1015 m/s

c) 3.310 x 1015 m/s

d) 3.313 x 1015 m/s

a) √h/4π

b) √h4π

c) √h/4

d) √h/π

#### 7. The uncertainty of a ball is given by 0.5A°. Then calculate the uncertainty in momentum.

a) 2.055 x 10-24 kgm/s

b) 1.015 x 10-24 kgm/s

c) 1.055 x 10-24 kgm/s

d) 1.095 x 10-24 kgm/s

a) 0.67A°

b) 0.67nm

c) 0.37A°

d) 1.67A°

a) 1 x 10-34 m

b) 2 x 10-34 m

c) 2 x 10-32 m

d) 2 x 10-3 m

a) De Broglie

b) Bohr

c) Rutherford

d) Thomson