ProSyllabus Journal CBSE Class 11 Annual Assessment Tuples and Dictionaries – NCERT Class 11 Computer Science Chapter 10 – Tuple Operations and Dictionary Handling in Python Introduces tuples as immutable ordered sequences with elements of different data types and demonstrates tuple operations such as concatenation, repetition, membership testing, and slicing. Explains tuple assignment, nested tuples, and the immutability characteristic. Covers dictionaries as mutable mappings of unique keys to values, dictionary creation, accessing items, operations, traversal, methods, and manipulation. Includes practical programs to illustrate dictionary use for data storage, retrieval, and updates.
Updated 2 weeks ago NCERT · Class XI · Computer Science · Python · Tuples · Dictionaries · Tuple Operations · Dictionary Methods · Chapter 10
#Tuples #Immutable Sequences #Tuple Operations #Tuple Assignment #Nested Tuples #Dictionaries #Mutable Mapping #Key-Value Pairs #Dictionary Operations #Dictionary Traversal #Dictionary Methods #Python Tuples #Python Dictionaries #NCERT Class 11 #Computer Science #Chapter 10
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Tuples and Dictionaries: NCERT Class 11 Chapter 10 - Enhanced Study Guide, Precise Notes, Diagrams & Quiz 2025
Enhanced Summary & Precise Notes
Tuples Basics - Expanded
Tuple Operations - Expanded
Tuple Methods & Built-in Functions
Tuple Handling with Programs
Dictionaries Basics - Expanded
Dictionary Operations - Expanded
Dictionary Methods & Built-in Functions
Dictionary Handling with Programs
NCERT Exercises Q&A
Quick Revision & Mnemonics
Interactive Quiz (10 Qs)
Key Concepts & Processes
Enhanced Full Chapter Summary & Precise Notes from NCERT PDF (22 Pages)
Overview & Key Concepts
Exact Definition: "A tuple is an ordered sequence of elements of different data types... enclosed in parenthesis and separated by commas."
Introduction: Builds on sequences (Ch5); Tuples: Immutable ordered; Dicts: Mutable mapping of keys:values.Chapter Structure: Tuples (intro/access/ops/methods/assign/nested/handling); Dicts (intro/creation/access/mutable/ops/traverse/methods/manip).2025 Relevance: Tuples for fixed data (e.g., coords in ML); Dicts for JSON/web data; Immutability for safety in APIs.
10.1 Introduction to Tuples
Precise: Ordered seq of mixed types; () commas; Indexed from 0; Single elem needs comma.
Precise Example 10.1: Tuple Creation (SVG)
Tuple Creation
tuple1 = (1,2,3,4,5)
tuple2 = ('Eco',87,'Acc',89.6)
tuple5 = (20,)
10.1.1 Accessing Elements
Precise: Indexing/slicing like lists; [0] first, [-1] last; IndexError out-range.
10.1.2 Immutability
Precise: Cannot change elems; TypeError; But mutable elems (lists) can change.
10.2-10.6 Tuples Ops/Methods/Handling
Precise: + * in/not in slicing; len() tuple() count() index() sorted() min/max/sum; Assign unpack; Nested; Programs 10-1 to 10-4.
10.7-10.12 Dictionaries
Precise: {key:value} mutable; Keys immutable unique; Access [key]; in/not in; Traverse for key/value/items(); Methods: len dict keys values items get update del clear; Programs 10-5 to 10-8.
Enhanced Features (2025)
Full PDF integration, expanded programs (10-1 to 10-8), SVGs (indexing/slicing), detailed tables/examples, NCERT Exercises Q&A updated, 10-Q quiz. Focus: Immutable vs mutable collections.
Exam Tips
Predict outputs (unpacking/indexing); Write UDFs (swap/nested); List methods (Tables 10.1-10.2); Explain immutability/mutability; Practice traversal/dict manip.
Tuples Basics - Creation, Indexing & Immutability Expanded
Core: Ordered immutable seq; () commas; Access [index]; Single: (20,).
10.1.1 Indexing (Detailed)
Syntax: t[0] first; t[-1] last; Slice [n:m].Example: (2,4,6,8,10,12)[0] → 2; [3] → 8.
Indexing Flow (SVG)
t[0] → First Elem
t[-1] → Last Elem
len(t) → Length
Immutability:
t[4]=10 → TypeError; But t[3][1]=10 if list inside.
Tip: 2025: Tuples in data pipelines for fixed schemas.
Tuple Operations - Concat, Rep, Mem, Slice Expanded
Core: + * in [n:m:k].
10.2 Operations (Detailed)
Concat: (1,3,5)+(2,4,6) → (1,3,5,2,4,6).Rep: ('Hello',)*4 → ('Hello',)*4.Mem: 5 in t → True.Slice: t[2:7] → Subtuple; [::2] even indices.
Slicing Example (SVG)
t[2:7] → Subtuple
t[::-1] → Reverse
Step: [::2] → Even
Example: Slicing
t = (10,20,30,40,50,60,70,80)
print(t[2:7]) # (30,40,50,60,70)
print(t[::-1]) # (80,70,60,50,40,30,20,10)
Tip: 2025: Tuple slicing in NumPy arrays.
Tuple Methods & Built-in Functions - Table 10.1 Expanded
Core: len() tuple() count() index() sorted() min/max/sum.
Method Description Example
len() Number of elems len((1,2,3)) → 3 tuple() Create from seq tuple([1,2]) → (1,2) count(x) Occurrences (1,2,1).count(1) → 2 index(x) First index (1,2,3).index(2) → 1 sorted() New sorted list sorted((3,1,2)) → [1,2,3] min() Smallest min((1,2,3)) → 1 max() Largest max((1,2,3)) → 3 sum() Sum elems sum((1,2,3)) → 6
Tip: 2025: Tuples in set operations for unique data.
Tuple Handling - Programs 10-1 to 10-4 Expanded
Core: Nested, swap, circle func, input max/min.
Program 10-1: Nested Student Records
# Program 10-1
st = ((101,"Aman",98),(102,"Geet",95),(103,"Sahil",87),(104,"Pawan",79))
print("S_No"," Roll_No"," Name"," Marks")
for i in range(0,len(st)):
print((i+1),'\t',st[i][0],'\t',st[i][1],'\t',st[i][2])
Output: S_No Roll_No Name Marks
Program 10-2: Swap Numbers
# Program 10-2
num1 = int(input('Enter the first number: '))
num2 = int(input('Enter the second number: '))
print("\nNumbers before swapping:")
print("First Number:",num1)
print("Second Number:",num2)
(num1,num2) = (num2,num1)
print("\nNumbers after swapping:")
print("First Number:",num1)
print("Second Number:",num2)
Output: Enter first:5 Enter second:10
Program 10-3: Circle Area/Circum
# Program 10-3
def circle(r):
area = 3.14*r*r
circumference = 2*3.14*r
return (area,circumference)
radius = int(input('Enter radius of circle: '))
area,circumference = circle(radius)
print('Area of circle is:',area)
print('Circumference of circle is:',circumference)
Output: Enter radius:5
Program 10-4: Input n Numbers Max/Min
# Program 10-4
numbers = tuple()
n = int(input("How many numbers you want to enter?: "))
for i in range(0,n):
num = int(input())
numbers = numbers +(num,)
print('\nThe numbers in the tuple are:')
print(numbers)
print("\nThe maximum number is:")
print(max(numbers))
print("The minimum number is:")
print(min(numbers))
Output: How many:5
Tip: 2025: Tuple unpacking in ML data returns.
Dictionaries Basics - Creation, Accessing & Mutability Expanded
Core: {key:value} ordered; Keys immutable unique; Access [key]; Mutable.
10.7.1 Creation (Detailed)
Syntax: {} or dict(); key:value pairs.Example: {'Mohan':95,'Ram':89}.
Creation Flow (SVG)
d = {'key':'value'}
d['key'] → 'value'
Add: d['new']=val
Mutability:
d['key']='new'; del d['key'].
Tip: 2025: Dicts in REST APIs for JSON.
Dictionary Operations - Membership, Traversing Expanded
Core: in/not in; for key in d; for k,v in d.items().
10.9-10.10 Operations (Detailed)
Mem: 'Ram' in d → True.Traverse: for key in d: print(key, d[key]).
Example: Traverse
d = {'Mohan':95,'Ram':89,'Suhel':92,'Sangeeta':85}
for key,value in d.items():
print(key,':',value)
Tip: 2025: Dict comprehension for data transforms.
Dictionary Methods & Built-in Functions - Table 10.2 Expanded
Core: len() dict() keys() values() items() get() update() del clear().
Method Description Example
len() Num pairs len(d) → 4 dict() From pairs dict([('a',1)]) → {'a':1} keys() List keys d.keys() → dict_keys(['Mohan',...]) values() List values d.values() → dict_values([95,...]) items() Key-val tuples d.items() → dict_items([('Mohan',95),...]) get(k) Value or None d.get('Ram') → 89 update(other) Merge dicts d.update({'new':10}) del d[k] Delete pair del d['Ram'] clear() Empty dict d.clear() → {}
Tip: 2025: defaultdict for counters in analytics.
Dictionary Handling - Programs 10-5 to 10-8 Expanded
Core: ODD dict ops; Employee dict; Char count; Num to words.
Program 10-5: ODD Dict Operations
ODD = {1:'One',3:'Three',5:'Five',7:'Seven',9:'Nine'}
print(ODD.keys()) # dict_keys([1,3,5,7,9])
print(ODD.values()) # dict_values(['One',...])
print(ODD.items()) # dict_items([(1,'One'),...])
print(len(ODD)) # 5
print(7 in ODD) # True
print(2 in ODD) # False
print(ODD.get(9)) # 'Nine'
del ODD[9]
print(ODD) # {1:'One',...}
Program 10-6: Employee Dict
# Program 10-6
num = int(input("Enter the number of employees whose data to be stored: "))
count = 1
employee = dict()
while count <= num:
name = input("Enter the name of the Employee: ")
salary = int(input("Enter the salary: "))
employee[name] = salary
count += 1
print("\n\nEMPLOYEE_NAME\tSALARY")
for k in employee:
print(k,'\t\t',employee[k])
Output: Enter num:5
Program 10-7: Char Count in String
# Program 10-7
st = input("Enter a string: ")
dic = {}
for ch in st:
if ch in dic:
dic[ch] += 1
else:
dic[ch] = 1
for key in dic:
print(key,':',dic[key])
Output: Enter:HelloWorld
Program 10-8: Num to Words
# Program 10-8
def convert(num):
numberNames = {0:'Zero',1:'One',2:'Two',3:'Three',4:'Four',5:'Five',6:'Six',7:'Seven',8:'Eight',9:'Nine'}
result = ''
for ch in num:
key = int(ch)
value = numberNames[key]
result = result + ' ' + value
return result
num = input("Enter any number: ")
result = convert(num)
print("The number is:",num)
print("The numberName is:",result)
Output: Enter:6512
Tip: 2025: Dicts in config files for apps.
NCERT Exercises - Questions & Answers
Based on full NCERT Chapter 10. Structured like textbook with full questions and detailed answers.
Question 1: Consider the following tuples, tuple1 and tuple2: tuple1 = (23,1,45,67,45,9,55,45) tuple2 = (100,200). Find the output...
i. print(tuple1.index(45))
ii. print(tuple1.count(45))
iii. print(tuple1 + tuple2)
Ans: (23, 1, 45, 67, 45, 9, 55, 45, 100, 200)
viii. print(sorted(tuple1)); print(tuple1)
Ans: [1, 9, 23, 45, 45, 45, 55, 67]
Question 2: Consider the following dictionary stateCapital: stateCapital = {"AndhraPradesh":"Hyderabad", "Bihar":"Patna","Maharashtra":"Mumbai", "Rajasthan":"Jaipur"}. Find the output...
i. print(stateCapital.get("Bihar"))
ii. print(stateCapital.keys())
iii. print(stateCapital.values())
iv. print(stateCapital.items())
v. print(len(stateCapital))
vi. print("Maharashtra" in stateCapital)
vii. print(stateCapital.get("Assam"))
viii. del stateCapital["Rajasthan"]; print(stateCapital)
Question 3: “Lists and Tuples are ordered”. Explain.
Ans:
Both maintain insertion order; Access by index; Tuples immutable, lists mutable.
Question 4: With the help of an example show how can you return more than one value from a function.
Ans:
def circle(r):
return (3.14*r*r, 2*3.14*r) # Tuple return
a,c = circle(5) # Unpack
Question 5: What advantages do tuples have over lists?
Ans:
Faster iteration; Immutable (safety); Smaller memory; Hashable (keys in dicts/sets).
Question 6: When to use tuple or dictionary in Python. Give some examples...
Ans:
Tuple: Fixed data e.g., coords (x,y); Dict: Key-val e.g., student {'roll':101, 'name':'Aman'}.
Question 7: Prove with the help of an example that the variable is rebuilt in case of immutable data types.
Ans:
t = (1,2,3)
id1 = id(t)
t += (4,)
id2 = id(t) # Different ID: new tuple
Question 8: TypeError occurs while statement 2... Give reason. How can it be corrected? tuple1 = (5) len(tuple1)
Ans:
Reason: (5) is int, not tuple. Correct: tuple1 = (5,); len((5,)) → 1.
Programming Problems
1. Write a program to read email IDs... usernames/domains tuples.
2. Input n students names tuple; Search name.
3. Python program to find highest 2 values in dict.
4. Create dict from string (char count).
5. Friends names/phone dict; Ops a-f.
Ans:
friends = {}
n = int(input("Num friends: "))
for _ in range(n):
name = input("Name: ")
phone = input("Phone: ")
friends[name] = phone
# a) for k,v in friends.items(): print(k,v)
# b) friends['new'] = '123'
# c) del friends['old']
# d) friends['exist'] = '456'
# e) print('name' in friends)
# f) for k in sorted(friends): print(k, friends[k])
Tip: Practice these for board exams; Focus on outputs and UDF logic.
Quick Revision Notes & Enhanced Mnemonics
Tuples
Mnemonic: "PIC" (Parenthesis Immutable Commas).
Indexing
Mnemonic: "FS" (First Slice).
Ops
Mnemonic: "+*in Slice".
Methods
Mnemonic: "LCIMMS".
Dicts
{k:v} mutable keys unique Mnemonic: "MKU" (Mutable Keys Unique).
Dict Methods
keys values items get update Mnemonic: "KVI GU".
Overall: "Tuple Intro Ops Methods Handle Dict Intro Ops Methods Manip" (T I O M H D I O M M). Flashcards ready.
Interactive Quiz: 2 Updated Questions from Full Chapter
Added dict/tuple handling Qs.
Start Quiz
Key Concepts & Processes - Expanded Table
Tip: 2025: Tuples/dicts in pandas DataFrames.
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Read page 1 free Get the kit Get the kit One payment · instant PDF · ₹159 View details Marks booster + cheatsheet: key concepts in 2 lines each 22 श्रुतियाँ and 10 थाट, defined बिहाग, भीमपलासी, भैरवी with बंदिश notation तीनताल, एकताल, चौताल: ठाह, दुगुन, चौगुन तानसेन, भातखंडे, पलुस्कर profiled 12 common mistakes, corrected Page 1 free about 8 min read , Full kit about 55 min read ₹159
Read page 1 free Get the kit Get the kit One payment · instant PDF · ₹159 View details Marks booster + cheatsheet: key concepts in 2 lines each वादी-संवादी, पकड़ and बंदिश for each राग तीनताल, एकताल, चौताल: ठाह, दुगुन, चौगुन तानसेन, भातखंडे, पलुस्कर profiled Four classes of instruments, तानपुरा, सितार 12 common mistakes, corrected Page 1 free about 8 min read , Full kit about 55 min read ₹159
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This chapter is part of the CBSE Class 11 Annual Assessment Board Examination Explore every chapter — summary, notes, extra questions & MCQ quizzes Preparing for CBSE Class 11 Annual Assessment? Students also sit JEE is set on the Class 11 and 12 Physics, Chemistry and Maths syllabus; students prepare for boards and JEE together.
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Discovering Tut: the Saga Continues
Start here
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Constitution: Why and How?
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Methods of Enquiry in Psychology
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An Empire Across Three Continents
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The Summer of the Beautiful White Horse
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We're Not Afraid to Die... if We Can All Be Together
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Election and Representation
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Political Theory: An Introduction
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Biological Classification
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Motion in a Straight Line
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Accountancy (Class 11) Practice Quiz | CBSE Class 11 Annual Assessment
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Sets and Venn Operations Fundamentals — Free CBSE Class 11 Annual Assessment Quiz
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Rights in the Indian Constitution
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Changing Cultural Traditions
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Private, Public and Global Enterprises
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Depreciation, Provisions and Reserves
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Introduction to Accounting
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Cell Cycle and Cell Division
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Anatomy of Flowering Plants
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Organic Chemistry – Some Basic Principles and Techniques
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The Ailing Planet: the Green Movement's Role
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Sensory, Attentional and Perceptual Processes
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Introducing Western Sociologists
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Social Change and Social Order in Rural and Urban Society
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Social Structure, Stratification and Social Processes in Society
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Doing Sociology: Research Methods
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Culture and Socialisation
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Understanding Social Institutions
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Terms, Concepts and Their Use in Sociology
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The Philosophy of the Constitution
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Constitution as a Living Document
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Natural Hazards and Disasters
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Structure and Physiography
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Biodiversity and Conservation
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World Climate and Climate Change
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Atmospheric Circulation and Weather Systems
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Solar Radiation, Heat Balance and Temperature
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Composition and Structure of Atmosphere
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Landforms and their Evolution
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Distribution of Oceans and Continents
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The Origin and Evolution of the Earth
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Geography as a Discipline
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Displacing Indigenous Peoples
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Comparative Development Experiences of India and its Neighbours
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Environment and Sustainable Development
#104
Employment: Growth, Informalisation and Other Issues
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Human Capital Formation in India
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Liberalisation, Privatisation and Globalisation: An Appraisal
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Indian Economy on the Eve of Independence
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Measures of Central Tendency
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MSME and Business Entrepreneurship
#118
Sources of Business Finance
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Social Responsibilities of Business and Business Ethics
#121
Emerging Modes of Business
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Forms of Business Organisation
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Business, Trade and Commerce
#125
Financial Statements - II
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Trial Balance and Rectification of Errors
#128
Bank Reconciliation Statement
#129
Recording of Transactions - II
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Recording of Transactions - I
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Theory Base of Accounting
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Introduction to Three Dimensional Geometry
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Permutations and Combinations
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Complex Numbers and Quadratic Equations
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Chemical Coordination and Integration
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Neural Control and Coordination
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Excretory Products and their Elimination
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Body Fluids and Circulation
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Breathing and Exchange of Gases
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Plant Growth and Development
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Photosynthesis in Higher Plants
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Structural Organisation in Animals
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Morphology of Flowering Plants
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Chemical Bonding and Molecular Structure
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Classification of Elements and Periodicity in Properties
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Some Basic Concepts of Chemistry
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Thermal Properties of Matter
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Mechanical Properties of Fluids
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Mechanical Properties of Solids
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Systems of Particles and Rotational Motion
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Business Studies (Class 11) Practice Quiz | CBSE Class 11 Annual Assessment
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Economics (Class 11) Practice Quiz | CBSE Class 11 Annual Assessment
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Humanities Subjects Practice Quiz | CBSE Class 11 Annual Assessment
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Motion in a Straight Line Practice Quiz | CBSE Class 11 Annual Assessment
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Thermodynamic Processes and Laws Advanced Challenge | CBSE Class 11 Annual Assessment
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