Hello Abhinaw, 

IGCSE is a very popular English language curriculum which was developed  by Cambridge International Examination (CIE) in 1988. The IGCSE curriculum allows the students to take a minimum of 5 and maximum of 14 subjects in total. It is the most popular international course for the students who are under the age of 14 to 16 years.

The IGCSE Curriculum consists of a First Language, Second Language, Mathematics, and one or more subjects in the area of science. These are the CORE subjects. English, Mathematics, and the Sciences also come under the IGCSE Core subjects category. You can also choose to study other subjects ranging from Social Sciences to Arts & Technology.

Now, let's have a look on the syllabus content offered by IGCSE Curriculum :

IGCSE Mathematics Syllabus :

• Number
• Algebra and graphs
• Geometry
• Mensuration
• Co-ordinate geometry
• Trigonometry
• Matrices and transformations
• Probability
• Statistics

IGCSE Biology Syllabus :

• Characteristics and classification of living organisms. 
• Organization of the organism. 
• Biological molecules
• Enzymes
• Plant nutrition
• Human nutrition
• Transport in plants
• Transport in animals
• Diseases in immunity
• Gas exchange in humans
• Respiration
• Excretion in humans
• Coordination and response
• Drugs
• Reproduction in plants and animals 
• Inheritance
• Organisms and environment
• Biotechnology and genetic engineering
• Human influences on ecosystems

IGCSE Chemistry Syllabus :

• The particulate nature of matter
• Experimental techniques
• Atoms, elements, and compounds
• Stoichiometry
• Electricity and Chemistry 
• Acids, bases, and salts
• The periodic table
• Metals 
• Air and water
• Organic Chemistry 

IGCSE Physics Syllabus :

• General Physics
• Thermal Physics 
• Properties of waves, including light and sound
• Electricity and Magnetism 
• Atomic physics

IGCSE Economics Syllabus :

• Basic economic problem: choice and the allocation of resources. 
• The allocation of resources: how the market works; market failure. 
• The individual as producer, consumer and borrower. 
• The private firm as producer and employer. 
• Role of government in the economy. 
• Economic Indicators
• International aspects

IGCSE Accountancy Syllabus :

• The purpose of accounting
• Sources and recording of data
• Verification of accounting records
• Accounting Procedures
• Principles of financial statements
• Analysis and Interpretation
• Accounting principles and policies

Hope this helps you!!

Good Luck :)