CBSE ADDA

   11 th Physics Chapters Lists Chapter 1 Matrices, Vectors, and Vector Calculus Chapter 2 Newtonian Mechanics – Single Particle Chapter 3 Oscillations Chapter 4 Non-Linear Oscillations and Chaos Chapter 5 Gravitation Chapter 6 Some Methods in the Calculus of Variations Chapter 7 Hamilton's Principle - Lagrangian and Hamiltonian Dynamics Chapter 8 Central-Force Motion Chapter 9 Dynamics of a System of Particles Chapter 10 Motion in a Non-Inertial Reference Frame Chapter 11 Dynamics of Rigid Bodies Chapter 12 Coupled Oscillations Chapter 13 Continuous Systems- Waves

Separating the Components of a Mixture Importance of separation--> To study and to use the individual components of a mixture Q. What would happen if you were to take a saturated solution at a certain temperature and cool it slowly.  Ans. Different substances in a given solvent have different solubilities at the same temperature. So on cooling substances start to precipitate out. Q. What is suspension?Write its properties? Ans: Suspension:Non-homogeneous systems, in which solids are dispersed in liquids, are called Suspensions so It is a heterogeneous mixture. Properties of a Suspension--- • Suspension is a heterogeneous mixture. • The  particles of  a suspension can be seen by the naked eye. • The particles of a suspension scatter a beam of light passing through it and make its path visible. • The solute particles settle down when a suspension is left undisturbed, that is, a suspension is unstable. * They can be separated from the mixture by the process of filtration. Q

Multiple-Choice Questions: Acid base and salt 1 .  The word acid comes from the Latin word ‘ acere ‘ which means a)         Sweet  b)         Salty c)         Neutral d)         Sour 2. Substances which are bitter in taste, feel soapy on touching are known as a)         Acids b)         Bases c)         Indicators d)         Neutral solution 3. Special type of substances used to test whether a substance is acidic/basic are known as a)         Indicators b)         Acids c)         Bases d)         Salt 4. Some naturally occurring indicators are (a). Turmeric (b)  Litmus ©. China rose (d). All the above 5.The most commonly used natural indicator’ Litmus’ is extracted from (a).Lichens (b). Turmeric ©. Indicators (d). China rose 6. Litmus is available in the form