Holidays homework

Class –x

Mathematics

Q1. Use Euclid’s division algorithm to find the HCF of 867 and 255.

Q2. Show that the square of any integer is of the form of 3m or 3m+1 for some integer m.

Q3. Show that the number 7-2 3 is irrational.

Q4. Explain why the number:-7x11x13+31 is composite.

Q5. If α and β are zeroes of the polynomial 2x2 + 7x -3, then the value of α2 +β2is ?

Q6. The sum and the product of the zeroes of the polynomials 2x2 + 2√2x +1 are?

Q7. Divide the polynomials f(x) by g (x) and find the quotient and remainder in this;-

  1. F(x)=6x3 -11 x2 +7 x ; g(x) = 2x-3
  2. F(x) = x4 -5x +6 ; g(x)= 2-x2

Q8. Find the values of k for which the followings pairs of equation have no solution;

  1. kx +3y =k-3

12x+ky=k

  1. 3x-y-5=0

6x-2y-k=0

Q9. Solve graphically

  1. X-2y =5

2x-4y=10

  1. X +y =3

2x+5y=12

  1. 4x+6y=9

2x+3y=6

  1. 2x-3y=5

3x+4y=-1

Q10.prepare a project report on at least (10-15) pages on any one of the topics

  1. Mensuration
  2. Statistics
  3. Trigonometry
  4. Probability

PHYSICS AND CHEMISTRY

Note: Do this holiday homework in separate notebook

Q1. Make a chart on “MODERN PERIODIC TABLE”

or

make a working model on following topics

  1. Electric circuit showing series or parallel combination
  2. Fire extinguisher
  3. Electromagnet

Q2. Make a project on topic “CHEMISTRY IN EVERYDAY LIFE”

Content:

1. Write 20 chemical substances that we use in our day today life

2. Write their chemical name and chemical formula.

3. Write its uses

4. Classify them as acidic, basic and neutral

Q3. Make a project on “SERIES AND PARALLEL COMBINATION”

Content:

  1. Introduction about the combinations.
  2. Draw the circuit diagram
  3. Advantages of parallel combination over series
  4. Mention the areas where you can find these combinations.
  5. Write the safety measures instruments that we use in our domestic circuit.

BIOLOGY

Q1. Prepare a project report on the following topics according to your roll numbers

Roll no Topics

1-15 NUTRITION

16-30 RESPIRATION

31 ONWARDS TRANSPORTATION

ASSIGNMENT

Q1. Nichrome wire of length l and radius ‘r’ has resistance of 10 Ω. How would the resistance and resistivity of the wire change when

(i)Only length of the wire is doubled?

(ii)Only diameter of the wire is doubled? Justify your answer.

Q2.Find the leas t possible value and maximum value of resistance that can be obtained by connecting 2 Ω,3Ωand 5Ω.

Q3. Calculate:

(i) value of current flowing through each resistor,

(ii) the total current in the circuit, (iii) the total effective resistance of the circuit.

Q4. 2 g of ferrous sulphate crystals are heated in a boiling tube.

(i)State the colour of ferrous sulphate crystals both before heating and after heating.

(ii)Name the gases produced during heating (iii) write the chemical equation for the reation

Q5. A brown substance ‘x’ on heating in air forms a substance ‘y’. When hydrogen gasis passed over heated ‘y’, it again changes back into ‘x’.

(i) name the substance ‘x’ and ‘y’

(iii)name the chemical processes occurring during both the changes.

(iii) write the chemical equations involved in both the changes.

Q6.2 g of lead nitrate powder is taken in a boiling tube. The boiling tube is heated over a flame.

(a) state the colour of the fumes evolved and the residue left.

(b) name the type of chemical reaction that has taken place stating its balanced equation.

Q7.A small quantity of silver chloride is kept in the sunlight in a china dish for about half an hour

(i)State the change you would observe in the colour of silver chloride. Suggest a reason for this change

(ii)write balanced chemical equation for the reaction taking place in this case.

Q8.Identify the type of each of the following reactions :

(a) a reaction in which a single product is formed from two or more reactants.

(b) the reaction mixture becomes warm.

(c) an insoluble substance is formed.

(d) external surface of the container in which reaction takes place becomes freezing cold.

ENGLISH

Q1. Write an article on IPL Tournament in 200 words.

Q2. Read the novel – ‘The Diary of a Young girl’.

Q3. Write a film review on the movie – ‘Chak De India’ or ‘Lagaan’

You must include -

  • brief outline of the plot
  • characterization
  • what you liked / didn’t like about the film.
  • why the film was worth watching / not worth watching.

Q4. Prepare a project report on the topic – ‘Waste Management in Delhi’. (10 – 12 pages)

Note: - Make a separate folder for homework.

Social science

History and Civics

  1. Read chapter 3 in History- Nationalism in India and make questions with one line answers from within the chapter. Write them down in your register.
  2. Map work:-

i)Locate the following congress sessions on the political map of India. Mention the names of cities also on the map- 1905, 1916, Sept. 1920, Dec. 1920, 1929.

ii)Locate the following places associated with the nationalist movement on the political map of India- Dandi, JallianwalaBagh, Kheda, Ahmedabad, ChauriChaura, Bardoli, Champaran.

Make proper index and paste the maps in your register.

  1. In civics, make a project on the newly elected government in India of about 10 pages. Attach pictures and write ups.

Geography

Make a project report on any one of the following topics:

1)Tsunami

2)Safer Construction Practices

3)Survival Skills

4)Alternate Communication Systems during disasters

5)Sharing responsibility

Following points should be kept in mind, while making the project:

(a)Project report should be hand written

(b)Number of pages around 15-20

(c)Well illustrated with examples, maps, diagrams and pictures

(d)Bind the project in a simple folder

FOUNDATION OF INFORMATION TECHNOLOGY

TOPIC :MS ACCESS

Ques. 1 Answer the following questions:

  1. Explain any four advantages of databases.
  2. Explain Relational Database Management System.
  3. What is the name of the field of a table which uniquely identifies a record?
  4. To what length a memo and text field can store the data?
  5. What happens when you enter numbers in Text data type field?
  6. What do you mean by the term “Data Redundancy” in context of databases?
  7. Write one example each of fields for which you would use – Number Data Type and Autonumber Data Type.
  8. Differentiate between Text and Memo Data type with example.

Ques. 2 Write the steps for the following:

  1. To set the Primary key
  2. To sort a field in an ascending order
  3. To add a record in a table
  4. To delete a record in a table
  5. To delete a field in design view
  6. To insert a field in between two fields in design view

Ques. 3 Design a table for the Library database of your school. Analyse the data required to be stored in this table and accordingly create fields and records in it. Name the field which can be set as a Primary key of the table and give the reason for selecting it. The table should contain a minimum of 5 relevant fields and 10 records in it.

Ques. 4 Study the following data and answer the questions given below:

Table – Patient

NamePatient_idDate of AdmissionDoctor_idDepartment

MohanP_10121/1/2013301Heart

PriyaP_10221/1/2013132Nero

SurajP_10323/1/2013204Brain

  1. Suggest the data types that should be used for each of the fields mentioned above.
  2. Suggest a field from the above table, which can be set as a Primary Key.

Ques. 5 Collect the information and make a chart on the latest Database Management System in use now a days. (Half chart Paper should be used)

Note:-Do Q 1 to 4 on A4 size sheets and arrange them in folder)