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CBSE Class X
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CBSE Class X

Years

2025

Subjects

Science

Topics

Structure of atom
Acid-Base Reactions
Acids, Bases And Salts
Alloys
Animals – Nervous System
Applications of Baking Soda
Asexual Reproduction
Atmospheric Refraction
Biology
Brain Structure
Carbon and Its Compound
Carbon and its Compounds
Chemical Effects of Electric Current
Chemical Equations
Chemical Properties Of Acids And Bases
Chemical Properties Of Carbon Compounds
Chemical Properties Of Metals
Chemical Reactions
Chemical bonding and molecular structure
Chemistry in Everyday Life
Circulatory System
Contraception
Control and Coordination
Coordination In Plants
Corrosion
Defects Of Vision And Their Correction
Digestion In Humans
Digestive system
Domestic Electric Circuits
Eco-System
Ecology
Ecology and Environment
Ecosystem
Effects Of Oxidation Reactions In Everyday Life
Electric Circuit
Electric Current And Circuit
Electric Potential And Potential Difference
Electric Power
Electric and Magnetic Fields
Electrical Circuits
Electrical power
Electricity
Electrolysis
Electromagnetism
Elements of Material Science
Environment
Environment and Economy
Environmental Science
Environmental Science
Excretion
Excretory system
Factors On Which The Resistance Of A Conductor Depends
Force On A Current-Carrying Conductor In A Magnetic Field
Genetics and Evolution
Heating Effect Of Electric Current
Heredity
Heredity and Evolution
How Do Metals And Non-Metals React?
How Do Organisms Reproduce
How Do Our Activities Affect The Environment?
Human Circulatory System
Human Development
Human Eye and The Colourful World
Human Reproduction
Human body
Human physiology
Hydrocarbons
Life Processes
Life Science
Light
Light - Reflection and Refraction
Magnetic Effects Of Electric Current
Magnetic Effects of Current and Magnetism
Magnetic Field And Field Lines
Magnetic Field Due To A Current-Carrying Conductor
Metallurgy
Metals and Non-Metals
Microorganisms
Modes Of Reproduction Used By Single Organisms
Nervous system
Occurrence Of Metals
Ohm’s Law
Optics
Organic Chemistry
Organic Chemistry
Our Environment
Oxides
Ozone Depletion
Periodic Classification of Elements
Photosynthesis — Food Making Process In Plants
Plant Biology
Plant Nutrition
Plant Physiology
Redox reactions
Refraction
Refraction of Light
Reproduction
Reproduction in Organisms
Reproduction in Plants
Resistance Of A System Of Resistors
Respiration
Scattering Of Light
Sexual Reproduction
Soaps And Detergents
Solid Waste Management
Spherical Mirrors
The Human Eye
The respiratory system
Thermodynamics terms
Transport in Plants
Types Of Chemical Reactions
functional groups
human nervous system
human reproduction

List of top Science Questions on Structure of atom asked in CBSE Class X

An element 'M' has 25% of the electrons filled in the third shell as in the second shell. The element 'M' is :

CBSE Class X - 2025
CBSE Class X
Science
Structure of atom

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