SUMMER VACATION 2015 HOME-WORK CLASS-X Dear Student Now that you are going to have your Summer Vacation going to commence from Friday, 29 May, we feel like giving you some certain pieces of advice which you are required to act upon. First of all, you have to heed to the completion of your Holidays Home Work. Plan systematically and stick to that quite seriously. Don t try to complete the Home work quickly either in the beginning or end of the holidays. Make proper survey if it has been given in your home work. At the same time you have to protect yourself from heat strokes. Take proper care of your health. Increase liquid intake in your diet. Wear loose cotton clothes. So Children, enjoy your holidays, do your homework meticulously and stay healthy. What is an earthquake? An earthquake is a shaking of the ground caused by the sudden breaking and movement of large sections (tectonic plates) of the earth's rocky outermost crust. The edges of the tectonic plates are marked by faults (or fractures). Most earthquakes occur along the fault lines when the plates slide past each other or collide against each other. The shifting masses send out shock waves that may be powerful enough to alter the surface of the Earth, thrusting up cliffs and opening great cracks in the ground and cause great damage... collapse of buildings and other man-made structures, broken power and gas lines (and the consequent fire), landslides, snow avalanches, tsunamis (giant sea waves) and volcanic eruptions. Earthquake Safety Rules Suggested safety rules during and after the earthquake are as follows: Before an Earthquake Emergency Kit and Disaster Plan are Important Retrofit and reinforce your house. Create a disaster plan to protect yourself and your family. Put together an emergency kit. Your kit should include nonperishable food, water, first aid supplies, flashlights, camping supplies (stove, Batterypowered lantern, etc.) During the earthquake: Do not panic, keep calm. Douse all fires. If the earthquake catches you indoors, stay indoors. Take cover under a sturdy piece of furniture. Stay away from glass, or loose hanging objects.
If you are outside, move away from buildings, steep slopes and utility wires. If you are in a crowded place, do not rush for cover or to doorways. If you are in a moving vehicle, stop as quickly as safety permits, but stay in the vehicle until the shaking stops. If you are in a lift, get out of the lift as quickly as possible. If you are in a tunnel, move out of the tunnel to the open as quickly as safety permits. After the earthquake: Check for casualties and seek assistance if needed. If you suspect a gas leak, open windows and shut off the main valve. Leave the building and report the gas leaks. Do not light a fire or use the telephone at the site. Turn off the main valve if water supply is damaged. Do not use the telephone except to report an emergency or to obtain assistance. Stay out of severely damaged buildings as aftershocks may cause them to collapse. Report any building damage to the authorities. As a precaution against tsunamis, stay away from shores, beaches and low-lying coastal areas. If you are there, move inland or to higher grounds. The upper floors of high, multistory, reinforced concrete building can provide safe refuge if there is no time to quickly move inland or to higher grounds. HOME-WORK fgunh 1- nso ds los;s vksj dfdr pkvz ij fy[ksaa 2- f{kfrt x [kam& ikb 10 ¼usrkth dk p ek½ ¼ckyxksfcu Hkxr½ i [kam& ikb 1 ¼lwjnkl ds in½ ikb&3 ¼nso½ 3- d`frdk& ikb 1 ekrk dk v py ds lhkh iz uksÿkj Jqrys[k ds :i esa fy[ksaa 4- O;kdj.k& okd; Hksn ¼jpuk ds vk/kkj ij½] in&ifjp; ifjhkk kk o mnkgj.k lfgr vh;kl iqflrdk esa djsaa 5- MATHEMATICS Do all questions in A4 sheets. 1. If two positive integers p & q can be expressed as p=ab 2 and q = a 2 b; a & b being prime numbers, then find the LCM (p, q). 2. Factorise 612 and 1314 by using tree method and then find HCF and LCM. 3. If α and β are the zeroes of the quadratic polynomial f x = x 2 5x + k, such that α β = 1, then find the value of k. 4. Find the zeroes of quadratic polynomial f x = abx 2 + b 2 ac x bc. 5. If x + a is factor of two polynomials x 2 + px + q and x 2 + mx + n, then prove that a = n q m p 6. Find the zeroes of polynomial 4 3x 2 + 5x 2 3 and verify the relation between zeroes and coefficient of the polynomial. 7. If α and β are zeroes of polynomial p x = 2x 2 7x + 5 then find a polynomial, whose zeroes are 2α + 1 and 2β + 3. 8. Write a cubic polynomial whose zeroes are 2 2 5, 2 + 2 5 and 1, respectively. 9. Draw the graph of quadratic polynomial x 2 + 4x 4 and find the zeroes of the polynomial. 10. A person rowing at the rate of 5 km/h in still water, takes thrice as much time in going 40 km upstream as in going 40 km downstream. Find the speed of the streain. 11. A women has 60 notes in all of `10 & `20 denominative if the total worth of notes is `850, then find out how many notes of each kind does she have.
12. If 4 times the area of smaller square is subtracted from the area of larger square, the result is 144 m. The sum of areas of the two squares is 464 m 2. Determine the sides of two squares. 13. Solve the following pair of equations by reducing them to a pair of linear equations. x + y = 3.3 0.6 = 1 where 3x 2y 0 3x 2y 14. In the given fig. ABCD is a parallelogram. Find the value of x & y. 15. The annual income of A and B are in ratio 3:4 and their annual expenditure are in the ratio 5:7. If each saves `15000 annually, then find their annual income. 16. When a polynomial 6x 4 + 8x 3 + 27x 2 + 21x + 7 is divided by another polynomial 3x 2 + 4x + 1, the remainder is in the form ax + b. Find a and b. 17. If α and β are the zeroes of the quadratic polynomial f x = ax 2 + bx + c, then evaluate 1 α 1 β. 18. If x 5 is a factor of the cubic polynomial x 3 3 5 x 2 + 13x 3 15, then find all the zeroes of the polynomial. 19. If ab is an irrational number, then prove that a + b is an irrational number. 20. If the HCF of 657 and 963 is expressible in the form of 657x + 963 15, then find x. 21. Find the greatest number which on dividing 1657 and 2037 leaves remainders 6 and 5, respectively. 22. The numbers 525 and 3000 are both divisible by 3, 5, 15, 25 and 75. What is the HCF of 525 and 3000? Justify your answer. 23. A forester wants to plant 66 mango trees, 88 orange trees and 110 apple trees is equal rows (in terms of number of trees). Also he wants of wake distinct rows of trees. (i.e only one type of trees in one row). Find the number of minimum rows. 24. Express as a rational number in simplest form: (i) 111.3235 (ii) 34.5678 25. Check whether 15 n can end with the digit zero(0) for any natural number n. 26. Define Euclid s division lemma. 27. Define Fundamental Theorem of Arithmetic. 28. If m n = 64, where m & n are positive integers, then find the value of n mn. 29. If p/q is a rational number (q 0) then what is the condition of q, so that decimal representation of p/q is terminating. 30. The sum of the zeroes of the equation equation? 1 + 1 = 1 is zero. What is the product of zeroes of the x+a x+b c Project (in project file): 1. Project on Pair of Linear equation in two variable. 2. Project on Pythogoras theorem by paper cutting & pasting method Activity (in Lab manual) 1- Verify the Pythogoras theorem. 3- To verify the conditions for consistency/in consistency for a pair of linear equations in two variables by graphical method. 6- To verify Basic proportionality theorem. (Thales theorem) 9- To verify experimentally that the Ratio of the Areas of two similar Triangles is equal to ratio of squares of their corresponding sides. 12 To Draw a commulative frequency curve (or an Ogive) of more than type. SOCIAL SCIENCE 1. Make a project on Disaster Management. 2. Prepare a working or Non-working model (any topic) 3. Visit your nearby village and talk to the Sarpanch of the village and prepare a report on MNREGA.
4. Prepare a project on the performance of all the National Political Parties in the Lok Sabha election 2014. 5. Watch the film Gabbar is Back. Suggest some other ways to remove corruption. Learning Task: Poem: Novel Reading: ENGLISH Literature Ch. 1 Two Gentle man of Verona Ch. 2 Mrs. Packletide s Tiger Ch. 1 The Frog & the Nightingale Ch. 2 Mirror The Story of My Life 1 st to 14 th Chapter (Write the review of each chapter in your project file.) 1. Writing Task: (Value based questions & HOTS) to develop creative & imaginative skills in the students. 1. Two gentlemen of Verona is the story of two boys who face lots of difficulties with courage and fortitude. They never get scared of the challenges thrown up by adversity and come up as winners. Keeping this story of bravery in your mind, write an article on the topic. Will power gets us immense courage to face problems. 2. Write an article on the topic Man is more dangerous than wild animals with his greed and his butchery (With the reference of the lesson Mrs. Packletide s Tiger). 3. Man is so busy in enhancing the outer beauty that he has no time to peep into his heart and spirit and to realize the beauty that lies with in. Explain it in your feelings. 4. Imagine at one point of time, the nightingale could see through the frog s motive and understand that he was befooling her. Describe the situation in your own words. OR Can you make or think another different end of the poem The Frog and the Nightingale? 2. Grammar Practice Work Do all the practice exercise questions of Tenses and Determiners in your work-book. 5. Write a story in about 150-200 words using the following beginning. I saw a cute well-dressed girl sitting at the roadside crying and 6. I was going for an interview. I was waiting for a bus when suddenly, I realized that Complete the story in about 150-200 words. 7. Project Work Tigers are crying for help. The number of the tiger is going down year by year. Go to your school library and collect information about the tiger and its life style from various books, and the internet. Now write a short note-on it and paste some pictures of them in your file. SCIENCE Physics Make a project on topics: 1. Thermal power Plant - Roll no. 1 10 2. Hydropower plant - Roll no. 11 20 3. Bio-gas plant - Roll no. 21 30 4. Solar Energy & Solar cooker Roll no. 31 40 5. Solar Cell & Solar panel Roll no. 41 50 Revise chapter 1 (Electricity) and Ch. 2 (Magnetic effects of current, half) Assignment: 1. Two lamps, one rated 100W at 220V and other 60 W and 220 V are connected in parallel to electric main supply. What current is drawn from the line, Supply voltage is 220V?
2. Which uses the more energy, a 250 W TV set in 1 hr. or a 1200W toaster in 10 min? 3. The V-I graph of a metallic circuit at two different temperatures T 1 and T 2 is shown in fig. Which of the two temp is higher and why? 4. Draw the V-I graph for ohmic and non-ohmic conductor. 5. Derive an expression for equivalent resistance in the following case - 6. B 1, B 2 and B 3 are three identical bulbs connected as shown in fig. Ammeters A 1, A 2 and A 3 are connected as shown. When all the bulbs glow, the current of 3A is recorded by ammeter A. (a) What happens to the glow of the other two bulbs when B 1 gets fused? (b) What happens to the reading of A 1, A 2, A 3 and A when B 2 gets fused? (c) How much power is dissipated in the circuit when all the three bulbs glow together? 7. (i) Find the value of current I in the circuit given as below: 15 Ω 30 Ω 30 Ω 15 Ω (ii) You have four resistances of 8Ω each. Show how would you connect these resistors to have effective resistance of 8Ω? 8. Find the equivalent resistance for the following circuit when R 1 =10 Ω R 5 =5 Ω R 3 =5 Ω (i) Switch is closed R 4 =10 Ω (ii) Switch is open Activity: 1 9. To explain how a current carrying wire shows magnetic effect of current. Activity: 2 10. To obtain magnetic field lines of force around a bar magnet. Chemistry 1. Why is combustion of Liquefied Petroleum Gas (LPG) a chemical change? 2. What is wrong in the following reaction: Mg + O Mgo Identify the mistake and balance the chemical reaction. 3. In the refusing of silver the recovery of silver from silver nitrate solution involves displacement by Cu-metal. Write the reaction. 4. Why is hydrogen peroxide kept in coloured bottles? 5. Consider the following reaction.
Fe + CuSO 4 FeSO 4 + Cu Cu + FeSO 4 CuSO 4 + Fe which of these two reaction will take place and why? 6. What type of reaction is represented by the digestion of food in our body? 7. Can a double displacement reaction takes place when the products are highly soluble or highly ionized? 8. How do we come to know that a chemical reaction has taken palce? 9. Give reasons: (i) Aluminium is reactive metal but is still used for packing food articles. (ii) Red litmus paper turn blue when touched with aqueous solution or magnesium oxide. 10. Translate the following statements into chemical equation and then balance. (a) Phosphorus burns in oxygen to give phosphorus pent oxide (b) Aluminium metal replaces iron from ferric oxide, Fe 2 O 3, giving aluminium oxide & iron. (c) Carbon disulphide burn in air to give carbon dioxide and sulphur dioxide 11. Grapes hanging on the plant do not ferment but after being plucked from the plant can be fermented. Under what condition do these grapes ferment? Is it as chemical or physical change. 12. What is the role of a catalyst in a chemical reaction? 13. How is conc. Of hydroxide ion (OH - ) affected when excess base is dissolved in a solution of sodium hydroxide? 14. Do basic solution also have H + (aq) ions? If yes, then why are these solutions basic? 15. Equal lengths of Mg ribbons are taken in test tubes A and B. Hydrochloric Acid (HCl) is added to test tube A while acetic acid is added to both the acids and same. In which test tube will be fizzing occur more vigorously and why? Activity: 1. Aim To study an exothermic combination (CaO+H 2 O) reaction with the help of the reaction. 2. Aim To show that air and water is essential for rusting. 3. Aim To show rancidity Model: Make any model of your choice. Charts: Make two charts showing activities of your choice. Biology 1. What is urethra? 2. What substances are contained in the gastric juice? What are their functions? 3. What is transpirational full? 4. What is ascent of sap? 5. Give reasons: (i) Plants look green (ii) The respiratory surface of earthworm its skin. (iii) Nutrition is necessary for an organism. 6. Differentiate between blood ad lymph. 7. Why is more concentrated yellowish urine excreted in summer? Activity: 1. To study root pressure in herbaceous plants. 2. To click the photographs of plants releasing waste product and of any five available animals/plants and mention their mode of nutrition, respiration, transportation and excretion. 3. Do assignment in note books. 4. Prepare a topic for class room teaching with corresponding chart and models. Note: 1. Write first term practicals in lab manual and learn Questions & Answer just given after them. 2. Make a living or non-living model of Science. 3. Learn Lesson of:
Physics: (i) Electricity (ii) Magnetic effect of current Chem. (i) Chemical reaction & equation (ii) Acids, Base & Salt 4. Make two projects in any science topic. (Write in project file) Activity Result 2015 Hindi Essay Writing Competition Held On 2-05-2015 Group 2( Class- 9th & 10th ) Position Student Name Father's Name Class First Sristhi Rai Mr. Subhash Chand IX-T2 Second Sweety Mr. Ashok Kumar IX-T1 Second Moniki Kumari Mr. Sudesh Kumar IX-T1 Third Muskan Yadav Mr. Veer Singh IX-T2 Third Uma Mr. Ranbir Singh X-T2 Spelling Competition Held On 16-05-2015 Group 2( Class- 9th & 10th ) Position Student Name Father's Name Class First Vivek Yadav Mr. Satish Yadav 9 T1 Second Sirsthi Mr. Subhash Chand 9 T2 Third Rohit Yadav Mr. Rakesh Kumar 9 T1 8 th SOF International Mathematics Olympiad School Toppers 2014-15 IX Sahil 1 st Gold IX Abhishek 2 nd Silver IX Pradhyuman Agarwal 3 rd Bronzel X Ankit 1 st Gold Medal of excellence X Ashish Yadav 2 nd Goldl X Sarita Yadav 3 rd Silver X Ankita 4 th Bronze 5 th SOF International English Olympiad School Toppers 2014-15 IX Rishita 1 st Gold IX Nimish 2 nd Silver l IX Shubham 3 rd Bronze X Falguni Yadav 1 st Gold Medal of excellence X Ankit Bodwal 2 nd Gold X Ankita 3 rd Silver
17th SOF National Science Olympiad School Toppers 2014-15 IX Sahil 1 st Gold IX Sarthak batra 2 nd Silver IX Dishant 3 rd Bronze X Vishakha 1 st Gold X Anupam Yadav 2 nd Silver X Priya 3 rd Bronze X Ankita 3r Bronze IMORTANT WORDS OF THE MONTH Abridge to summarize/make short a book, play etc. Acrimony- angry, bitter feeling Acumen The ability to decide things quickly and well Adage Well-known phrase expressing a general truth about people or the World. Addle to be confused Aghast filled with horror and surprise Amped excited, asperity because of an event Anoint To put oil/water in the head as a part of religious ceremony Apoplectic Very angry Armoire a cupboard with drawers and shelves underneath especially one that has lot of decoration Assignation A secret meeting Avow to show feelings and thoughts publically IMORTANT DATE OF THE MONTH June 4: International Day of Innocent Children Victims of Aggression. June 5: World Environment Day. June 7: International Level Crossing Awareness Day June 8: World Ocean Day June 12: World Day Against Child Labour June (2nd Sunday): Father s Day. June 14: World Blood Donor Day June 17: World Day to Combat Desertification and Drought June 20: World Refugee day. June 21: Father's day, World Music day. June 26: International day against Drug abuse & Illicit Trafficking. June 27: World Diabetes Day.
PRINCIPAL