KABRA MEMORIAL PUBLIC SCHOOL

HOLIDAY HOME WORK SESSION 2019-20

Name ……………………………………. Class & Section 11th (Sci+Comm)

Note :- 1- Do homework of each subject in subject fair note book. 2- The Holiday H.W. need to be done in neat and beautiful handwriting 3- This summer Assignment carries 10% weightage for PT 1. 4- School reopens on – 17/06/2019 at 08:50 AM regular.

Dear Parents, Kindly motivate your child to inculcate some good habits during summer vacations like :

Plant a sapling and look after it.

Donate your old books and old clothes to the poor or needy. Don’t litter on the roads/bus stop/metro station/railway station

whenever you go out.

Don’t eat junk food every day. Don’t hurt stray animals.

ENJOY SUMMER HOLIDAYS The summer holiday homework is also available on school’s website i.e. www.kmps.edu.in Dear Parents ,

Welcome to 2019-2020 school year!

It is a privilege to serve as the Principal of KMPS - a school that has earned a well-

deserved reputation for high expectations, academic excellence and a positive, safe

learning environment in which each and every child is able to learn and grow through

various co-curricular activities as well as under CCE.

Our expectations are: Be Safe, Be Responsible, and Be Respectful. We believe that all

students deserve to develop in an environment that promotes and supports students

learning how to make the right choices.

You are requested to motivate your child ---

1. To read newspaper/English novel/ English magazine daily in order to enhance the

knowledge about current affairs and the events taking place around the world

2. To ban the usage of mobile. The usage of mobile is very destructive, as it kills the

creativity of the child.

3. To complete the holiday assignment. It is better to complete the holiday

assignment from 1- 15 May.

4. To follow healthy and nutritious diet. More green vegetable and salad to be

included in diet for proper growth of children. Avoid junk food.

5. To do exercise/yoga and meditation daily, this will enhance the concentration of the

students .

6. Support your child to be self dependent, let him/her do the work by himself or

herself.

The world in which we live presents many difficulties and challenges but there is

one constant factor that keeps us focused and that is our ‘mission’, which is ‘to

develop the full potential of each student – intellectually, spiritually, emotionally,

socially & culturally. Our website is filled with information from every department,

office, and program. If you still have any questions regarding your son’s or

daughter’s education, please feel free to contact the class teachers concerned, &

to the office.

Academically yours

Principal,

KMPS

Kabra Memorial Public School “Summer Holiday Assignment - 2019-20”

Class – 11TH (Science & Commerce)

Subject – CHEMISTRY BASIC CONCEPTS OF CHEMISTRY

1. a) NO and NO2 are two oxides of nitrogen.

i) Which law of chemical combination is illustrated by these compounds?

ii) State the law.

b) Calculate the mass of a magnesium atom in grams.

c) What is molality?

2. Determine the number of moles present in 0.55 mg of electrons.

3. Empirical formula represents the simplest whole number ratio of various

4. atoms present in a compound.

a. Give the relation between empirical formula and molecular formula.

b. An organic compound has the following percentage composition C =

12.36%, H = 2.13%, Br = 85%. Its vapour density is 94. Find its molecular

formula.

c. What is mole fraction?

5. When nitrogen and hydrogen combine to form ammonia, the ratio

between the volumes of gaseous reactants and products is 1: 3: 2. Name

the law of chemical combination illustrated here.

6. A compound is made up of two elements A and B, has A = 70% and B =

30%. The relative number of moles of A and B in the compound are 1.25

and 1.88 respectively. If the molar mass of the compound is 160, find the

molecular formula of the compound.

Subject – ENGLISH 1. Read a book/novel and write its review including the plot, theme,

characters and other important elements in about 200-250 words.

2. Read the newspaper daily and find out samples of the following: -

a. 5 Reports

b. 5 Posters

c. 8 Advertisements [eg-situation vacant, lost and found, missing and

obituary] Paste them neatly in the writing-skills notebook.

3. Writing Skills-

a. Write an article on the topic-‘How Google controls the life of an average

person?’[150-200 words]

b. Design a poster on the topic –‘How CNG can be the best alternative to

diesel and petrol.’ [50 words]

c. Describe your favorite holiday destination and write what makes it a

‘happening tourist destination’. [120-150 words]

Subject – PHYSICS 1. Write the value of angle of reflection for a ray of light falling normally

on a mirror.

2. Light falls from glass to air. Find the angle of incidence for which the

angle of deviation is 900.

3. Name the phenomenon due to which one cannot see through fog.

4. What is the power of plane glass plate?

5. An object of length 2.5cm is placed at a distance of 1.5f from a concave

mirror where f is the focal length of the mirror. The length of object is

perpendicular to principal axis. Find the size of image. Is the image

erect of inverted?

6. Explain Ohm’s law and derive the expression for the two resistances r

and R are in series and parallel.

7. What do you understand by magnetic field? What are the properties of

magnetic field lines?

8. Explain the working of Human eye?

9. Explain in brief conventional and non-conventional sources of energy.

10. Explain the electricity generator and its types.

Subject – BIOLOGY 1. Which layer is referred to as cementing layer in a cell?

2. Why mitochondria and chloroplast not considered as a component of

endomembrane system?

3. Which pigment is responsible for the colour of carrot?

4. Name two types of cells which lack a nucleus.

5. What are histone proteins?

6. What are satellite chromosomes?

7. What are the disadvantages of multicellularity?

8. The lysosomal enzyme does not destroy the cell’s own cytoplasm.

Why?

9. What is the significance of association of carbohydrates to the plasma

membrane?

10. What are plasmids? What is their role?

Subject – MATHS 1. Find in degrees the angle subtended at the centre of a circle of

diameter 50 cm by an arc of length 11 cm.

2. A circular wire of radius 3 cm is cut and bent so as to lie along the

circumference of a hoop whose radius is 48 cm. Find the angle in

degrees which is subtended at the centre of the hoop.

3. A horse is tied to a post by a rope. If the horse moves along a circular

path, always keeping the rope tight, and describes 88 metres when it

traces 720 at the centre, find the length of the rope.

4. Find the value of: (i) sin(7650 ) (ii) cosec(-11100 ) (iii) cot(-6000 )

5. Evaluate: tan 13π/12.

6. The three vertices of the parallelogram are A(3, - 1, 2), B(1, 2, - 4) and

C(- 1, 1, 2). Then find the coordinate of the fourth vertex.

7. Find the coordinates of the point which divides the join of P(2,-1,4) and

Q(4,3,2) in the ratio 2:3 (i) Internally (ii) externally

8. Find the mean and variance for first n natural numbers.

9. The mean and standard deviation of a group of 100 observations were

found to be 20 and 3, respectively. Later on it was found that three

observations were incorrect, which were recorded as 21, 21 and 18.

Find the mean and standard deviation if the incorrect observations are

omitted.

10. The mean and variance of 7 observations are 8 & 16 respectively. If 5 of

the observations are2, 4, 10, 12,14, find the remaining two

observations

Subject – PHYSICAL EDUCATION 1. Prepare project file on the following topics: -

i. Cricket

ii. Volley Ball

iii. Kho-Kho

iv. Kabaddi

v. Badminton

1. Project should be of 10 page. Each topic.

2. Heading –

a) Rules & regulation of the game.

b) dimension of field.

c) Pictures news related to this game.

d) Picture of the players related to this game.

Subject – ECONOMICS

1. Write an essay on Indian economy. (500 words)

2. With an essay on the Global economy (250 words)

3. State reasons why does an economic problem arise.

Subject – BUSINESS STUDIES 1. Collect the information on any one topic out of the following for the

project work

i. Find out from local sample business units the various objectives they

pursue

ii. Problems of setting up and Running business units.

iii. Survey of popularity of credit cards issued by different banks.

iv. Study of profile of a Sole Trader/Partnership.

Subject – ACCOUNTANCY 1. Explain the role of accounting.

2. Explain the limitations of accounting.

3. Distinguish between book-keeping and accounting.

4. Explain objective of accounting.

Subject – CHEMISTRY Q.1 Prepare the short notes of chapter Some Basic Concept in Chemistry

Q.2 What are physical Quantities? Explain with proper units.

Q.3 What do you mean by Precision and accuracy?

Q.4 What are Scientific figures?

Q.5 What is Kjeldahl’s method? Explain with diagram.

Q.6 Explain all concentration terms.

Q.7 Explain thermodynamic laws and terms.