ST. XAVIER’S SCHOOLS –CHANDIGARH, PANCHKULA, MOHALI, ZIRAKPUR

Class IX English Worksheet -1

PREPOSITION

A preposition is a word placed before a noun or pronoun to show the relationship between the

person or the thing denoted by it and something else.

Examples of prepositions: on,in,off,for,at,since,within,after,into,by,with etc

Exercise 1

Fill in the blanks with an appropriate word given in brackets

1. I am fond....ice cream. ( of, with) 2. We saw a horse....the road. ( in,on) 3. What are you looking....?( at, in) 4. Gandhiji is known all... the world.( on,over) 5. The bell rang....two o’clock. (at,in) 6. Our friends arrived....the morning.( at,in) 7. We played cricket... Sunday.( in,on) 8. I shall return....an hour.( in,within) 9. He ran....the hospital.( for,to) 10. He jumped....the lake.( in,into)

Exercise 2

Fill in the blanks with an appropriate word given in brackets

1. They live....Japan.( at,in) 2. We sat....the bed.( in,on) 3. The cat hid....the table.( on,under) 4. The property was divided....the two brothers.( between,among) 5. The thieves quarrelled....themselves .(between,among) 6. Sonia lives....a rented flat. ( in,at) 7. The tree was cut.....the farmer.(with,by) 8. I rested....five o’clock. (till,since) 9. Mona will return....a week. ( after, by) 10. He is working....his desk.( by,at)

Exercise 3

Complete the following sentences using appropriate prepositions.

1. Regular exercise is beneficial -------health.

2. He is bent ----- mischief.

3. We must be grateful for the blessings God has bestowed -----us.

4. He is a hypocrite. Beware ----- him.

5. She boasts ----- her achievements.

6. The indulgent mother is blind ------her son's faults.

7. He was born ------ poor parents.

8. The ship is bound -----California.

9. The robbers broke ------the shop at midnight and looted it.

10. Emperor Akbar brought -----many social reforms.

Exercise 4

Complete the following sentences using appropriate prepositions.

1. James left home because he did not want to abide ----- his father's wishes.

2. This area abounds -----minerals.

3. There is an abundance ------elements in earth's crust.

4. He has been absent ----- school since Monday.

5. You can't talk to him now. He is absorbed -------- his work.

6. If you want to lose weight, you must abstain ------- eating fatty foods.

7. We can't accede ------his request at this time.

8. Your suggestion is not acceptable ------ me.

9. Many villages still do not have access ------electricity.

10. She accused me ------ poisoning her dog.

Exercise 5

Complete the following sentences using appropriate prepositions.

1. I was amazed ----- her brilliant performance.

2. She is anxious -----hear from her daughter.

3. I am anxious ------his health.

4. He apologized -----her for his rude behavior.

5. They appealed ----- us for help.

6. He appears ------be rather opinionated.

7. We want the best candidate to be appointed -----the post.

8. She has an aptitude ----- mathematics.

9. Avail yourself ------ this opportunity to visit Kashmir.

10. Are you aware ---his plans?

Dear Students,

The Answers of Worksheet -1 will be given in the next worksheet.

Class IX Hindi Worksheet -1

Class IX Punjabi Worksheet -1

Class IX Mathematics Worksheet -1

Class 9 Physics Worksheet -1

1. Differentiate between fundamental units and derived units.

2. Which of the following unit is not a fundamental unit :

a. metre

b. Litre

c. Second

d. Hertz

3. 1 A° = ------------- nm.

4. Ly is the unit of -------.

5. Complete the following :

a. 1 nano second = ------ s

b. 1quintal = --------- kg

c. 1 year = ----------- s

6. State two units of mass bigger than kilogram.

7. Name two units of lengths smaller than metre. How they related to the

metre?

8. The mass of an oxygen atom is 16.00 u .Find it's mass in kg.

9. The unit of time is :

a. Light year.

b. Parsec

c. Leap year

d. Angstrom

10. State the S.I unit of the following :

a. Length

b. Mass

c. Time

Class 9 Chemistry Worksheet -1

ATOM is the smallest particle of an element which can take part in a chemical reaction.

ELEMENT is a pure substance made up of one kind of atoms having same atomic

number and cannot be broken into two or more substances.

PROTONS

Atom consists of ELECTRONS

NEUTRONS

Protons and neutrons are in the centre or nucleus of the atom. Protons are positively

charged. Neutrons are neutral. Electrons revolve around the nucleus in various shells.

Electrons are negatively charged.

Atomic number [Z]= No. of protons = No. of electrons

Mass number [A] = No. of protons + No. of neutrons

A Z = p = e

Z A = p + n

Rules for distribution of electrons in various shells

1. Maximum number of electrons in each shell is 2n2, where n= no. of shell.

2. Outer most shell cannot have more than 8 electrons.

Shells are designated as : K, L, M, N, {n=1,2,3,4…}

Maximum no. of electrons : 2 8 18 32

Electronic configuration is distribution of electrons in different shells. e.g.

Z = 11 A = 23

Protons = 11

Neutrons = 23 – 11 = 12

Electrons = 11

Electronic configuration = 2,8,1

Valence shell is the outer most shell.

Valence electrons are the electrons in the outer most shell.

Metals have 1,2,3 valence electrons. Non metals have 5,6,7 valence electrons.

Inert gases have completely filled shells.

ANSWER THE FOLLOWING

1. Write the number of electrons, protons and neutrons present in

a)

b)

Also write their electronic configuration

2. Elements A,B,C have atomic numbers 9,20,10 respectively. State which one is

i. A metal

ii. A non-metal

iii. An inert gas

3. Write the mass number and atomic number of an atom having 16 neutrons and

15 protons

4. Write the number of neutrons in the nucleus of an atom having atomic number

17 and mass number 37.

5. Draw the atomic structure of magnesium having atomic number 12 and mass

number 24.

Class 9 Biology Worksheet -1

The cell is the basic structural, functional, and biological unit of all known organisms. A cell is the smallest unit of life Cells were discovered by Robert Hooke in 1665, Cell theory, first developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells, that cells are the fundamental unit of structure and function in all living organisms, and that all cells come from pre-existing cells. The Three main parts of the Cell are:-

1) Cell membrane 2) Cytoplasm 3) Nucleus

BASIC STRUCTURE OF PLANT AND ANIMAL CELL

The main differences between plant cell and animal cell are as follows:-

1) The plant cell consist of cell wall whereas it is absent in animal cell. 2) The plant cell consist of large vacuole whereas animal cell consist of small

vacuoles. 3) Plastids are present only in plant cell where as it is absent in animal cell. 4) Centrosomes are present only in animal cell whereas it is absent in plant cell

Cell organelles and its Functions Cell Membrane

Separates contents of the cell from its surroundings

Regulates the entry of certain solutes and ions

Maintain the shape of animal cell

https://en.wikipedia.org/wiki/Organismshttps://en.wikipedia.org/wiki/Lifehttps://en.wikipedia.org/wiki/Robert_Hookehttps://en.wikipedia.org/wiki/Cell_theoryhttps://en.wikipedia.org/wiki/Matthias_Jakob_Schleidenhttps://en.wikipedia.org/wiki/Theodor_Schwann

Cytoplasm Different organelles contained in it perform different functions All metabolic activities occur in it

Nucleus Centre of the cytoplasm in animal cell. Regulates cell functions Contains chromosomes, made of genes, which control hereditary characteristics

Mitochondria Spherical, rod-shaped dispersed in the cytoplasm Produces ATP which acts as energy currency for the cell

Endoplasmic reticulum Irregular network of tubular double membrane distributed over the entire cell cytoplasm Folding of proteins Transport of synthesized proteins

Golgi apparatus Stacks of flattened membrane sacs located near the nucleus Modification and export of proteins

Vacuoles Fluid-filled or solid-filled and membrane-bounded spaces in the cell cytoplasm Store water and other substances, food, pigments and waste products Provides turgidity to the cells

Lysosomes Simple, tiny, single membrane bound sacs dispersed in cell cytoplasm Digest and remove wastes from the cell

Ribosomes Dense, spherical, small granules, either scattered in the cytoplasm or attached to the

outside of endoplasmic reticulum Synthesise proteins

Plastids (only in plant cells) Oval, spherical and disc-shaped dispersed in cell cytoplasm Site for manufacture and storage of important chemical compounds used by the cell

Assignment:- 1) Define cell. 2) Who discovered cell? 3) Who gave cell theory? State It. 4) Write differences between animal cell and plant cell. 5) Write the Functions of the following cell organelles:-

o Nucleus o Cytoplasm o Mitochondria o Ribosomes o Cell Membrane o Vacoules

Note:- Revise the diagram of animal cell and plant cell and draw it.

CLASS : 9 HISTORY & CIVICS Worksheet-1

NOTE: Read , write and learn the following questions .

Q.1 What is meant by the term Constitution ?

Ans.1 A Constitution is a body of well defined laws to govern a State(country) .

Q.2 When was the Constitution adopted & enforced ?

Ans.2 Date of Adoption : 26th November, 1949

Date of Enforcement :26thJanuary, 1950

Q.3 Define Single Citizenship .

Ans.3 It means that every Indian citizen is a citizen of his country only,

irrespective of the state where he resides .

Q.4 What is a Welfare State ?

Ans.4 It is a concept of the government in which the state protects & promotes

the economic & social well-being of the citizens .

Q.5 Define Universal Adult Franchise .

Ans.5 Every Indian citizen on attaining the age of 18 years has the right to vote &

elect their representatives to form the Government .

Q.6 What are Fundamental Rights ?

Ans.6 Fundamental Rights are the basic & essential rights meant for the overall

development of every individual .

Q.7 What are Fundamental Duties ?

Ans.7 Fundamental Duties are the moral obligations of all citizens to promote

patriotism & unity of India .