Chemistry – Class 11 Practice Test 2

1. What's the wavelength for the visible region in electromagnetic radiation?

2. __________ gave the idea for the first time to classify elements as per their properties.

3. Name the element that belongs to s-block but is placed in the p-block.

4. Iω = _________

5. Which of the following is not true about transuranium elements?

6. What does Z represent in the above graph?

7. Bohr's model could not explain the ability of atoms to form molecules by ______

8. Chalcogens are the elements of Group ___________

9. 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.

10. Δx. Δp ≥ h/4π.