S.S.M classes privious year questions and notes

S.S.M CLASSES CHAPTER 13 -SURFACE AREA AND VOLUME  Question 1.      2 cubes each of volume 64 cm 3  are joined end to end. Find the surface area of the resulting cuboid. Question 2. A vessel is in the form of a hollow hemisphere mounted by a hollow cylinder. The diameter of the hemisphere is 14 cm and the total height of the vessel is 13 cm. Find the inner surface area of the vessel Question 3. A toy is in the form of a cone of radius 3.5 cm mounted on a hemisphere of the same radius. The total height of the toy is 15.5 cm. Find the total surface area of the toy. Question 4 A cubical block of side 7 cm is surmounted by a hemisphere. What is the greatest diameter the hemisphere can have? Find the surface area of the solid. Question 5. A hemispherical depression is cut out from one face of a cubical wooden block such that the diameter d of the hemisphere is equal to the edge of the cube. Determine the surface area of the remaining solid. Question 6. A medicine cap...

  Question 1 - In the given figure, O is the centre of a circle, AB is a chord and AT is the tangent at A. If ∠AOB = 100°, then calculate ∠BAT. (2011D) Question 2. In the given figure, PA and PB are tangents to the circle with centre O. If ∠APB = 60°, then calculate ∠OAB, (2011D) Question 3. In the given figure, O is the centre of a circle, PQ is a chord and PT is the tangent at P. If ∠POQ = 70°, then calculate ∠TPQuestion (2011OD) Question 4. A chord of a circle of radius 10 cm subtends a right angle at its centre. Calculate the length of the chord (in cm). (2014OD) Question 8. In the given figure, AP, AQ and BC are tangents to the circle. If AB = 5 cm, AC = 6 cm and BC = 4 cm, then calculate the length of AP (in cm). (2012OD) Question 9. In the given figure, PA and PB are two tangents drawn from an external point P to a circle with centre C and radius 4 cm. If PA ⊥ PB, then find the length of each tangent. (2013D) Question 10. In the given figure, PQ and PR are two tangents to a ...

              S.S.M CLASSES    1- What was the Rowlatt Act? (2011 OD) 2- Why was the Rowlatt Act imposed? (2011) 3- Why was the Khilafat movement started? (2012 OD) 4- What was the main reason to withdraw the Non-cooperation Movement? (2013 OD) 5- Name two main ‘Satyagraha’ movements organized by Mahatma Gandhi successfully in favour of peasants in 1916 and 1917. (2013 D) 6- Explain the idea of Satyagraha according to Gandhiji. (2014 D) 7- Explain the effects of ‘worldwide economic depression’ on India, towards late 1920s. (2013 OD) 8- Explain any three facts about the new economic situation created in India by the First World War. (2011 D) 9- How did the plantation workers understand the idea of ‘Swaraj’? Explain. (2011 OD) 10- Explain the circumstances under which Gandhiji decided to call off the Civil Disobedience Movement in 1931. (2012 OD) 11- Explain the reaction of Indian people against the Rowlatt Act passed through the Imperial Legis...

1-periodicity- The repetition of same properties after definite interval is called periodicity in properties. 2- Mendeleev’s periodic law- Properties of elements are the periodic functions of their atomic masses. 3- limitations of Mendeleev’s classification*P osition of hydrogen was not justified. *I ncreasing order of atomic mass could not be maintained. *Isotopes have similar chemical properties but different atomic masses, they cannot be given separate places. T he metallic character of elements change along a period of the periodic table from the left to the right-- - The metallic character goes on decreasing along a period from left to right because atomic size goes on decreasing therefore, tendency to lose electrons decreases. 2* the valency of elements vary (a) in going down a group- Valency remains the same (b) in going from left to right in a period- Valency first goes on increasing from left to right in a period till middle of period, then decreases. 3* the tendency of at...