KPK 11th Class Chemistry Chapter 2 Atomic Structure Short Questions Answers

KPK 11th Class Chemistry Chapter 2 Atomic Structure Short Questions with answers are combined for all 11th class(Intermediate/hssc) Level students.Here You can prepare all Chemistry Chapter 2 Atomic Structure short question in unique way and also attempt quiz related to this chapter. Just Click on Short Question and below Answer automatically shown. After each question you can give like/dislike to tell other students how its useful for each.

Class/Subject: 11th Class Chemistry

Chapter Name: Atomic Structure

Board: All KPK  Boards

• Malakand Board 11th Class Chemistry Chapter 2 Atomic Structure  short questions Answer
• Mardan Board 11th Class Chemistry Chapter 2 Atomic Structure short questions Answer
• Peshawar Board 11th Class Chemistry Chapter 2 Atomic Structure short questions Answer
• Swat Board 11th Class Chemistry Chapter 2 Atomic Structure short questions Answer
• Dera Ismail Khan Board 11th Class Chemistry Chapter 2 Atomic Structure short questions Answer
• Kohat Board 11th Class Chemistry Chapter 2 Atomic Structure short questions Answer
• Abbottabad  Board 11th Class Chemistry Chapter 2 Atomic Structure short questions Answer
• Bannu Board 11th Class Chemistry Chapter 2 Atomic Structure short questions Answer

Helpful For:

• All KPK Boards 11th Class  Chemistry Annual Examination
• Schools 11th Class Chemistry December Test
• KPK 11th Class Chemistry Test
• Entry Test questions related Chemistry

KPK 11th Class Chemistry Chapter 2 Atomic Structure Short Questions Answers

Name any four properties of the cathode rays.

Properties of cathode easy.
Various experiments ware performed to study the properties of cathode rays. In 1869 Hittorf observed that the object placed inside the tube in the path of these rays cast shadow.

2. In 1870 Crooks demonstrated that cathode rays ware streams of particles, which have kinetic energy & momentum because these rays roll a light pinwheel towards the anode. The wheel begins to rotate in the revers direction if cathode and anode are interchanged.

3. In 1895 J- Perrin showed that cathode rays bend towards the positive pole of electric field. There by showing their negative nature.

4. Cathode rays bend at right angle to the line joining the north & south poles showing their charged nature.

How will you differentiate between a continuous and a line spectrum?

Continuous spectrum:
It is that type of spectrum in which various colors are diffused into each other & no colored boundary line can be marked between different colors. E.g. the light emitted by sun gives a continuous spectrum.
Line spectrum:
In this type of spectrum, there is a clear cut boundary between the colour bands. It is also called atomic spectrum. When an element is vaporized on a flame or in an electric arc or in discharge tube. It emits light of characteristic colour by which it may be identified. Different colour represent different wave lengths.
Atomic (line) spectrum is obtained when a gaseous or vaporized element is heated. The electrons in atoms get energy and excited. These electrons on de-excitation, emit radiations of characteristic colour reflecting a particular length. For example sodium imparts golden yellow, to the Bunsen flame. Indicating that it absorbs and then emit radiations in the region of wave length ranging from 580 nm to 600nm. Simalrly barium gives grassy green and calcium gives brick red colour to the Bunsen flame.