Saturday 27 April 2019

class 10 holiday hw


Class X
Mathematics Holiday Home Work
1.     Mathematics Lab Record
i)                   Activity  - 9 (Pythagoras Theorem)
ii)                Activity – 12 (Making a Clinometers)

2.     NCERT Exemplar of Trigonometry and Polynomials (Including Examples).
URL: Polynomials and Trigonometry


WORKSHEET FOR CLASS 10
                              English Holiday Homework
Q1)The following passage has not been edited. There is one error in each line. Write the
incorrect and the correct word against the blanks provided below: (4)
Incorrect Correct
A)The issue of capital punishment involves determining
whether the execute of criminals is ever                        a) ______ _______
justified, and if so, on what circumstances                     b) ______ _______
it is permissible and how to determining                        c) ______ _______
the limits of a crime demand execution.                        d) ______ _______
It also involve the issue whether the society                           e) ______ _______
believes in corrective justice nor retributive                    f) ______ _______
justice. The basic assumption of retributive
nature of punishment in generally is that a                    g) ______ _______
criminal deserve punishment.                                                                    h) ______ _______
B) Virat Kohli has been in unstop form                         a) ________ ________
over the last three years and captaincy seem                b) ________ ________
to have add to his steely determination                        c) ________ ________
to succeed. Hapless Srilankans was flattened                 d) ________ ________
on Sunday as the India skipper hit a majestic                e) ________ ________
243 on the final test at the Ferozeshah Kotla                 f) _________ ________
ground on Sunday. The beauty of Kohli‟s knock             g)_________ ________
are that they had been rapid affairs                             h) ________ ________
and come as great advertisement for entertaining test cricket
C)A Harvard Business Review experimented at rudeness a) ______ ______
and came out with some interesting conclusions.
Participants who were treated rudely with others            b) ______ ______
were 30% less creative and produce 25% fewer             c) ______ ______
ideas than the ones which weren‟t treated rudely.           d) ______ ______
Rude behaviour is not just a epidemic but it‟s                e) ______ ______
contagious. Unless, we find a way
to reward good behaviour, we are head                        f) ______ ______
for disaster.

Q2)Rearrange the words and phrases given below to form meaningful sentences: (2)
a) blood / school / a / was / our / last / camp / organized / in / donation / week
b) all / a / few / their / blood / principal / the / almost / teachers / donated /
except / including / the
c) for / disadvantaged / NGO‟s attract / of the / many / uplift / to / people /
deeply committed / working/the
d) social organizations / real / their / indeed / calling / certain / many have / found / in
e) their skills / can / welfare / of the society / the / they / use / for
f) and / foreign agencies / the / a lot of / sector / the government / gets / from / funding
g) Without focus / a / a / like / mind / is / vagabond
h) to practice discipline / a focused / in various forms / to have / one needs / mind
i) get / it / tendency to / distracted / is human / easily
j)methods of / meditation / different temperaments / so many / have been
developed / wonderful / to suit
k) with / by linking us / they / attain / our inner selves / equanimity / help us
Q3)Complete the following story in 150-200 words. Also provide a suitable title.

A)The prize distribution ceremony was going on. The parents and the awardees were seated  but then suddenly…
B)Read the cues given below and develop the story about robbery in 150-200 words. Give suitable title.
The boy/girl went to the bank/ discussing and doing the needful – crowd started becoming more and more noticeable- noticed three young men between the age of 20-30- took out their arms- brandished their guns- gave threats to rob the bank- carried black suitcases-boy/girl got up- took position in front of one of the robbers- he/she thought of a trick to save the bank.

ग्रीष्मावकाश हिन्दी गृहकार्य
·        आपको अपने विद्यालय में लगने वालेपल्स पोलियो की सूचना पूरे मुहल्ले को देनी है। आप इस बात का प्रचार बिना पैसे के कैसे करेंगे? उदाहरण के साथ लिखिए।
·       'पुस्तकें पढ़ने की आदत' पर एक अनुच्छेद लिखें|
·       छुट्टियों का सदुपयोग कैसे करें - इस विषय पर मित्र से ५० शब्दों का संवाद लिखिए |
नोटः (सभी कार्य अपनी कक्षा पुस्तिका में करना है।)

Social Science Holiday Homework
Topic :  Consumer Awareness
Objective :  To gain an insight and pragmatic understanding of the concept, and to enhance the life skills of the students.
Marking Scheme :  The distribution of mark over different aspect relating to the Project work is as follows :
a)    Content accuracy, originality and analysis.
b)    Presentation and creativity.

PHYSICS

·        Prepare the PPT on sources of energy and write notes of the same chapter( notes available in the blog)
·        Write following experiments in the practical record from the lab manual
1.       Studying the dependence of potential difference (V) across a resistor on the current (I) passing   through it and determine its resistance. Also plotting a graph between V and I.
2.       Determination of the equivalent resistance of two resistors when connected in series and parallel


CHEMISTRY

·        Work sheet on chemical reactions and equations
·        Write following experiments in the practical record from the lab manual
1.       Finding the pH of the following samples by using pH paper / universal indicator:
2.       Performing and observing the following reactions and classifying them into:



BIOLOGY

·        Work sheet on life processes and our environment
·        Write following experiments in the practical record from the lab manual
1.       Preparing a temporary mount of a leaf peel to show stomata.
2.       Experimentally show that carbon dioxide is given out during respiration.

Tuesday 23 April 2019


 class 9 worksheet
1
Name the cell organelle which is termed as powerhouse of the cell.
1
2
Identify the single celled organisms from the following:
Cockroach, Chlamydomonas, snake, mosquito, bacteria
1
3
Write any two differences between prokaryotic and eukaryotic cells.
1
4
When a living plant cell loses water through osmosis, there is contraction of the contents of the cell away from the cell wall. What is this phenomenon called?
1
5
What is the chemical composition of cell wall in plants and fungi?
1
6
Name the functional unit of DNA that carries genetic information.
1
7
Why is nucleus called “director of the cell”?
1
8
Name the cell organelle which is able to destroy a damaged cell.
1
9
In which parts of the plant are chromoplasts found ?
1
10
What is plasmolysis?
1


11
A plant cell is placed in a hypotonic solution. What will happen? Will the cell burst? Why or why not ?
2
12
List two main functions of plasma membrane.
2

13
Draw the diagram of a plant cell and label any three parts which make it different from an animal cell.
3
14
Distinguish between hypotonic solution, isotonic solution and hypertonic solution.
3
15
What is the difference between plasma membrane and cell wall? Give the functions of each one.
OR State three differences between cell membrane and cell wall.
3
16
Define the following terms:
Protoplasm, cytoplasm, nucleoplasm
3
17
Grass looks green, papaya appears yellow. Which cell organelle is responsible for this?
3
18
Differentiate between diffusion and osmosis.
3
19
Name:
(a) An organelle which has its own genetic material
(b) An organelle rich in digestive enzymes
(c) Nucleic acid present in nucleus of cell
3

20
What are the main functions of each of the following cell components?
(a) Plasma membrane
(b) Chromosomes
(c) Lysosomes
(d) Ribosomes
(e) Nucleus
(f) Mitochondria
(g) Nucleolus
(h) Cell wall
(i) Chloroplast
( j) Peroxisomes
5


life process and environment

class 10 holiday HW
1
Name the component of blood that helps in the formation of blood clot in the event of a cut.
1
2
Which pigment is responsible for the transport of nutrients, respiratory gases, metabolites, hormones and waste products?
1
3
Select two non-biodegradable substances from the following wastes generated in a kitchen: spoilt food, paper bags, milk bags, vegetable peels, tin cans, used tea leaves.
1
4
Distinguish between biodegradable and non-biodegradable wastes.
1
5
List two natural ecosystems.
1
6
List two biotic components of a biosphere.
1
7
The depletion of ozone layer is a cause of concern. Why?
1
8
What will be the amount of energy available to the organism of the 2nd trophic level of a food chain, if the energy available at the first trophic level is 10,000 joules?
1
9
The first trophic level in a food chain is always a green plant. Why?
1
10
The following organisms form a food chain. Which of these will have the highest concentration of non-biodegradable chemicals? Name the phenomenon associated with it.
Insects, Hawk, Grass, Snake, Frog.
1
11
List two components of an ecosystem.
1
12
Name the phenomenon in which non-biodegradable chemicals get accumulated progressively at each trophic level of a food chain.
1
13
What is the role of decomposers in the ecosystem?
1
14
Write the full name of the group of compounds mainly responsible for the depletion of ozone layer.
1
15
Expand the term: U.N.E.P.
1


16
Explain the mechanism of gaseous exchange between tissues and blood.
2
17
Why are the walls of ventricles thicker than the auricles ?
2
18
Government of India is imposing ban on the use of polythene bags for shopping. List four advantages of using cloth or jute bags over polythene bags.
2
19
Construct an aquatic food chain showing four trophic levels.
2

20
List the three kinds of blood vessels of human circulatory system and write their functions in tabular form.
3
21
Draw a diagram of human excretory system and label kidneys, ureters on it.
3
22
What is an ecosystem? List its two main components. We do not clean natural ponds or lakes but an aquarium needs to be cleaned regularly. Why is it so? Explain.
3
23
“Damage to the ozone layer is a cause for concern.” Justify this statement. Suggest any two steps
to limit this damage.
3

24
(a) Explain how does the exchange of gases occur in plants across the surface of stems, roots and leaves.
(b) How are water and minerals transported in plants?
5