THE DALY COLLEGE, INDORE HOLIDAY HOME WORK ASSIGNMENT CLASS : - X SUB: CHEMISTRY

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1 THE DALY COLLEGE, INDORE HOLIDAY HOME WORK ASSIGNMENT CLASS : - X SUB: CHEMISTRY. Write all the experiments mentioned in the list given below from the laboratory manual in your practical diary. Draw related diagram and equations if any on the unruled page LIST OF PRACTICALS [204-5] SA. To find the ph of the following samples by using ph paper / universal indicator. a)dilute Hydrochloric acid. b) Dilute NaOH solution. c) Dilute ethanoic acid solution.d) Lemon juice e) water f) Dilute sodium bicarbonate solution. 2. To study the properties of acids and bases HCL & NaOH by their reaction with a) Litmus solution (Blue/Red).b) Zinc metal.c) Solid sodium carbonate. 3. To perform and observe the following reactions and classify them into: i) Combination reaction. ii) Decomposition reaction. iii) Displacement reaction. iv) Double displacement reaction. ) Action of water on quick lime. 2) Action of heat on ferrous sulphate crystal. 3) Iron nails kept in copper sulphate solution. 4) Reaction between sodium sulphate and barium chloride solution. 3. A) To observe the action of Zn, Fe, Cu and Al metals on the following salt solutions. ZnSO 4 (aq.)b) FeSO 4 (aq.)c) CuSO 4 (aq.)d) Al 2 (SO 4 ) 3 (aq.) B) Arrange Zn, Fe, Cu and Al metals in the decreasing order of reactivity based on the above result. SA -2. To study the following properties of acetic acid ( ethanoic acid) : i) Odour.Ii) solubility in water iii) effect on litmus.iv) reaction with sodium bicarbonate. 2. To study saponification reaction for preparation of soap 3. To study the comparative cleaning capacity of a sample of soap in soft and hart water. The Daly College, Indore

2 Homework Subject Social Science (Economics) Class X Q. Complete the development goal of different categories of persons Category of Person Developmental Goals / Aspirations Landless rural labourers Prosperous farmers from Punjab Farmers who depend only on rain for growing crops A rural woman from a land owning family Urban unemployed youth A boy from a rich urban family A girl from a rich urban family An adivasi from Narmada valley Citizen of Afghanistan Q.2 Different persons can have different developmental goals Do you agree? Justify

3 Q.3 What may be development for one may not be development for the other. It may even be destructive for the other. Do you agree? Justify.

4 English Class X Read 'Hellen Keller' and locate the answers in the text book.you will be tested on the whole book after the holidays. FRENCH Class X Complétez tous les exercices de l'unité et de l'unité 2 d'entre Jeunes 2 - Cahier d'exercices. DC INDORE HOLIDAY ASSIGNMENT CLASS- X biology Write the following experiment in your practical file. The student must remember the following instructions before starting practical work. A] Diagram should always be drawn large,neat & labeled on drawing sheet. B] Write the date of experiment on the top left corner of the page. C] Use only black lead pencil while drawing or sketching diagram. Students studying in class X have to prepare Biology practical file based on following experiments: EXPERIMENT. To prepare a temporary mount of a leaf peel to show stomata. EXPERIMENT 2. To show experimentally that light is necessary for photosynthesis. EXPERIMENT 3. To show experimentally that carbon dioxide is given out during respiration.

5 EXPERIMENT 4. To study (a) binary fission of Amoeba and (b) budding in yeast with the help of prepared slides. EXPERIMENT 5. To study homology and analogy with the help of preserved /available specimens of either animals or plants. EXPERIMENT 6. To identify the different parts of an embryo of a dicot seed (Pea, gram or red kidney beans) Department of biology Subject--History Class--X Topic--- To prepare a chart showing analysis of Lok Sabha Election Results CBSE SOCIAL SCIENCE PROJECT Disaster Management CLASS-X Year PROJECT WORK: Every student has to compulsorily undertake one project on Disaster Management. A list of topics for project work is enclosed. The text book entitled Together Towards a Safer India, part III by CBSE is the recommended primary source for successfully carrying out the project work. Project work Requirements. The total length of the project report will not be more than 0 written pages of A-4 size paper. 2. The project report will be hand written and credit will be awarded to original drawing, illustrations and creative use of materials. 3. The project report will be presented in a neatly- bounded folder OR spiral binding. Preparation and Submission of the project work: The project report will be developed and presented in this order:. Cover Page showing Project Title, Student information, School and Year. 2. List of Content with Page numbers 3. Acknowledgement ( acknowledging the institution, Offices and libraries visited and persons who have helped) 4. Chapters with relevant headings 5. Bibliography should have the title, Page referred, author, publisher, year of publication and if a web site, the name of the website with specific website link which has been used. 6. All the photographs and sketches should be labeled and acknowledged. 7. Teacher s evaluation report- Allocation of marks:- Total marks will be allocated over the different aspect of The project work in the following manner- S No. Aspects Marks. Content accuracy and originality 2 2. Presentation and Creativity 2 3. Process of project completion: Initiative, Cooperativeness, Participation and Punctuality. Total marks for project in Class X 5

6 Criteria for project Work: Content accuracy and originality Presentation and Creativity Process of project completion Reads original sources and chooses content from books And internet. Presents report with original thoughts and opinions supported by facts. Chooses topics on one s own, shares information willingly, interacts with teachers and peers willingly, takes responsibility, punctuality in completing the project. Last date for submission- 5 th July, 204 SUMMER VACATIONS ASSIGNMENT MATHEMMATICS (CLASS X) Note : All the questions to be solved in separate note book only. WORKING/DEMOSTRATIVE MODEL (ANY ONE ) Prepare a model of the formula for the curved surface area of a hemisphere in terms of its radius ( Take a cylinder whose height and radius both equal to the radius of a hemisphere). Prepare a model of the formula for the Volume of a hemisphere in terms of its radius. ( Take a cone whose height and diameter both equal to diameter of hemisphere). Prepare a model to verify that the angle subtended by an arc at the centre of a circle is twice the angle subtended by the same arc at any other point on the remaining part of the circle. Prepare a Model to verify that angle in the same segment of a circle are equal. Prepare a Model to verify the Pythagoras theorem. Prepare a Model to verify the sum of the opposite angles of a cyclic quadrilateral is supplementary. REAL NUMBERS

7 ASSIGNMENT ON POLYNOMIALS. Find the zeros of the polynomial x 2 + x+ 30 and, and verify the relationship between the zeros and the coefficients. 2. Verify that 2,and are the zeros of the polynomial 6x 3-7x 2 +x-2 and hence verify the relationship between the zeros and the coefficients. 3. If two zeros of the polynomial p(x)=x 3-4x 2-3x+2 are and -, then find its third zero 4. Find all the zeros of the polynomial x 4 +x 3-34x 2-4x+20, if two of its zeros are 2 and Find all the zeros of the polynomial 2x 4-2x 3-7x 2 +3x+6, if two of its zeros are and If sum of the squares of zeros of the quadratic polynomial p(x)= x 2 8x + k is 40, find the value of k. 7. What must be subtracted from 8x 4 +4x 3-2x 2 + 7x 8 so that the resulting polynomial is exactly divisible by 4x 2 + 3x If the polynomial 6x 4 + 8x 3 +7x 2 +2x + 7 is divided by another polynomial3x 2 + 4x +, the remainder comes out to be ax + b, find a and b. 9. Find a quadratic polynomial whose zeros are -9 and -/9. 0. Check whether polynomial x 2 -x+ is a factor of the polynomial x 4-3x 2 + 4x+ 5. LINEAR EQUATIONS IN TWO VARIABLE Q. Solve the following system of linear equations by elimination method :- a). 3x + 4y =25 ; 5x 6y = -9 b)., c)., d)., e). x + y = a + b, ax - by = a 2 b 2 f). 27x + 3y = 85, 3x + 27y = 89 ANSWERS: (elimination method)

8 a) x = 3, y = 4 b ) x= 4, y= 9 c) x = b, y = -a d) x = 7, y = 3 f) x = a, y = b f) x = 2, y = QUESTIONS BASED ON THE CONDITIONS OF SOLVABILITY. For what value of k the following system of equations has a unique solution. x ky = 2, 3x + 2y = Find the value of k for which the following system of linear equations has infinitely many solutions. ( k )x + 3y = 7, ( k + )x + 6y = (5k ). 3. Find the values of a and b for which the following system of linear equations has infinitely many solutions. 2x 3y = 7, (a + b)x (a + b 3)y = 4a + b EQUATIONS REDUCIBLE TO SIMULTANEOUS LINEAR EQUATIONS Solve the following system of linear equations :., Ans. 2., Ans. 3., Ans. Solve the following system of linear equations graphically :. x 4y + 4 = 0, 3x + 2y 4 = x y = 5, 3x + 2y = 3. Draw the graph for x y + =0, 3x + 2y 2 = 0. Calculate, the area bounded by these lines and x- axis. WORD PROBLEMS. Seven times a given two digit number is equal to four times, the number obtained by interchanging the digits and the difference of the digit is 3. Find the number. 2. A man travels 600 km. partly by train and partly by car. If he covers 400 km. by train and remaining by car, it takes him 6 hrs. and 30 min. but if he travels 200 km. by train and rest by car,he takes half an hour longer. Find the speed of the train and that of car years hence, the age of father shall be three times the age of his son while 5 years earlier, the age of the father was 7 times the age of his son.find their present ages. 4. The taxi charge in a city comprise of a fixed charge together with the charge for the distance covered. For the journey of 0 km. the charge paid is Rs.75 and for the journey of 5 km. charge paid is Rs.0. What will a person pay if he travels a distance of 25 km. ******************************* DC, INDORE HOLIDAY ASSIGNMENT SUBJECT- PHYSICS CLASS X Q. What is meant by saying that electric potential at a point is volt? Q.2 How much work is done in moving a charge of 2C across two points having a potential difference of 2V? Q.3 If a potential difference of 0V causes a current of 2A to flow for minute, how much energy is transferred? Q.4 Draw circuit symbols for (a) fixed resistance (b) variable resistance (c) a cell (d) a battery of three cells (e) an open switch (f) a closed switch Q.5 Define electric current. What is the S.I unit of electric current. Q.6 Name the law which relates the current in a conductor to the potential difference across its ends.

9 Q.7 Multiple Choice questions: (i) The work done in moving a unit charge across two points in an electric circuit is a measure of (a) current (b) potential difference (c) resistance (d) power (ii) The device used for measuring potential difference is known as (a) Potentiometer (b) ammeter (c) galvanometer (d) voltmeter (iii) Which of the following units could be used to measure electric charge? (a) Ampere (b) joule (c) volt (d) coulomb (iv) The unit for measuring potential difference is (a) Watt (b) ohm (c) volt (d) kwh (v) One coulomb charge is equivalent to the charge contained in (a) 2.6 x 0 9 electrons (b) 6.2 x 0 9 electrons (c) 2.65 x 0 8 electrons (d) 6.25 x 0 8 electrons (vi) The other name of potential difference is (a) Ampereage (b) wattage (c) voltage (d) potential energy (vii) Which unit could be used to measure current? (a) Watt (b) Coulomb (c) Volt (d) Ampere (viii) If the current through a flood lamp is 5A, what charge passes in 0 seconds? (a) 0.5C (b) 2C (c) 5C (d) 50C (ix) If the amount of electric charge passing through a conductor in 0 minutes is 300C, the current flowing is (a) 30A (b) 0.3A (c) 0.5A (d) 5A (x) The potential difference across 3Ω resistor is 6V. The current flowing in the resistor will be (a) 0.5A (b) A (c) 2A (d) 6A (xi) A car headlight bulb working on a 2V car battery draws a current of 0.5A. The resistance of the light bulb is (a) 0.5Ω (b) 6Ω (c) 2Ω (d) 24Ω (xii) The unit of electric resistance is (a) ampere (b) volt (c) coulomb (d) ohm (xiii) The substance having infinitely high electrical resistance is called (a) conductor (b) resistor (c) insulator (d) superconductor (xiv) Keeping the potential difference constant, the resistance of a circuit is doubled. The current will become (a) double (b) half (c) one fourth (d) four times (xv) Keeping potential difference constant, the resistance of a circuit is halved. The current will become (a) one fourth (b) four times (c) half (d) double