WOODLAND OVERSEAS SCHOOLAn International School

INTERNATIONAL SCHOOL AWARD 2019-2022

BRITISH COUNCIL

Summer Vacation Summer Vacation Summer Vacation Homework Homework Homework

FOR GRADE-12 (SCIENCE)

www.woschool.com

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ENGLISH HOMEWORK

1. Write a report on changing environment during lockdown.

2. Prepare notes using heading and subheading on COVID-19. Use

recognizable abbreviations

3. Write a speech to be delivered in the National Assembly regarding

economic crisis in the country due to COVID-19.

PHYSICS HOMEWORK

1. Write the following derivations on notebook:

a) Coulomb's law.

b) Electric field due to point charge.

c) Electric field on axial line of an electric dipole.

d) Electric field on equatorial line of an electric dipole.

e) Electric dipole in uniform electric field (torque).

f) Prove of gauss' theorem.

g) Applications of gauss' theorem:

· Electric field intensity due to an infinitely long straight

charged wire.

· Electric field due to thin plane sheet of charge.

· Electric field due to two parallel thin plane sheet of charge.

· Electric field due to uniformly charged thin spherical shell.

2. Solve on notebook any Ten numerical from NCERT solutions

and any Ten numerical from exemplar solution of chapter-1 sent

in snap homework.

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CHEMISTRY HOMEWORK

1. Make an investigatory project on “Study of common food

adulteration in fat, oil, butter, sugar, turmeric powder, chilli

powder and pepper.”

2. Solve the following questions from Chapter Solutions:

· Draw a plot of vapour pressure Vs mole fraction for a solvent

in solution containing nonvolatile solution.

· Raoult's Law is a special case of Henry's Law, Justify.

· What type of equilibrium exists in a solution of solid solute in

liquid solvent at saturation point?

· What is the effect of increase in temperature on solubility of

NaCl in water given Δ H = +ve?sol

· On what factor does the value of K and K depend? How can b f

the values of K and K be calculated using thermodynamic b f

quantities?

PHYSICAL EDUCATION HOMEWORK

1. Prepare a Project Report on any one of the following games:

a) Basketball b) Badminton

c) Volleyball d) Cricket

e) Football f) Kho-Kho

2. Write about any three famous sports personalities of the game of

your choice.

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MATHEMATICS HOMEWORK

1. Attempt all the questions of the topic covered in chapter Matrices.

2. Revise and write Trigonometry formulas.

3. Write and revise the formulas of Dot product and cross product of

Vectors (Done in G-11 Physics).

4. Attempt M.C.Q of chapter Matrices based on attempted formulas

from the back of book.

5. Write atleast 15 Dialogues for group discussion for assembly topic

“Success stories of renowned people.”

BIOLOGY HOMEWORK

Prepare a Project Report on any one of the following topics:

a) Cancer b) HIV-AIDS

c) Human Genome Project d) DNA Replication

e) Transcription f) Biodiversity

g) Lac-operon h) Oogenesis

i) Spermatogenesis j) Translation

k) DNA fingerprinting l) Drug Addiction

m) Microbe: Friend or Foe n) Pollination

o) Gene Therapy p) Mendelian Disorder

q) Pedigree Analysis

r) Role of Recombinant DNA technology in Today's Medicine.

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INFORMATICS PRACTICE HOMEWORK

Chapter 1: Python pandas:1. What is the output for − 'Woodland Overseas' [100:200]?

a) Index error b) ' 'c) 'Woodland Overseas' d) Syntax error

2. How to Create an Empty Series?3. What will be the output of following program?

import pandas as pdimport numpy as npdata = np.array(['a','b','c','d'])s = pd.Series(data,index=[100,101,102,103]) print s

4. Retrieve the first three elements in the Series. If a : is inserted in front of it, all items from that index onwards will be extracted. If two parameters (with: between them) is used, items between the two indexes (not including the stop index).

5. Create following Data frame then delete first column using del method and then delete second using pop method.

Our data frame is:one three twoa 1.0 10.0 1b 2.0 20.0 2c 3.0 30.0 3d NaH NaH 4Deleting the first column using DEL function:three twoa 10.0 1b 20.0 2c 30.0 3d NaN 4Deleting another column using POP function:threea 10.0b 20.0c 30.0d NaN

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6. What is the usage of head() and tail() methods?7. Explain with example:

a) ndim b) dtype c) size d) shape8. Explain each of the following methods with example:

Sr. No. Function Description1. count() Number of non-null observations2. sum() Sum of values3. mean(). Mean of Values4. median() Median of Values5. mode() Mode of values6. std() Standard Deviation of the Values7. min() Minimum Value8. max(). Maximum Value9. abs(). Absolute Value

10. prod() Product of Values11. cumsum() Cumulative Sum

12. cumprod() Cumulative Product9. Predict the output import pandas as pd

s = pd.Series(['Amrit', 'Taran', 'Bhoomika', 'Armaan@t']) print s.str.isupper()print s.str.isnumeric()

10. Predict the output of following code import pandas as pd

import numpy as np

df = pd.DataFrame(np.random.randn(8, 4),index = ['a','b','c','d','e','f','g','h'], columns = ['A', 'B', 'C', 'D'])

#select all rows for a specific column print df.loc[:,'A']

Note: The Homework has to be presented neatly and creatively in

beautiful handwriting in loose sheets and it has to be deposited on day

one when school reopens.

STOP CORONAVIRUS SPREAD

WEAR MASK

WASH HANDS USE HAND SANITIZER

MAINTAIN SOCIAL DISTANCE

PREVENTION FROM COVID-19

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