1. Aerospace Engineering: Aerospace engineering involves the design, development, and maintenance of aircraft and spacecraft. This branch of engineering covers areas such as aerodynamics, propulsion, structural design, and flight mechanics.
2. Chemical Engineering: Chemical engineering involves the design and development of processes and equipment for the production of chemicals, materials, and energy. This branch of engineering covers areas such as thermodynamics, process design, and reaction engineering.
3. Computer Science and Engineering: Computer science and engineering involves the design and development of computer systems, software, and hardware. This branch of engineering covers areas such as computer architecture, algorithms, programming languages, and artificial intelligence.
4. Electrical Engineering: Electrical engineering involves the design and development of electrical systems, including power generation, transmission, and distribution systems, as well as electronic devices and computer hardware. This branch of engineering covers areas such as electromagnetics, control systems, and power electronics.
5. Mechanical Engineering: Mechanical engineering involves the design and development of machines, tools, and other mechanical systems. This branch of engineering covers areas such as mechanics, thermodynamics, and materials science.
6. Metallurgical and Materials Engineering: Metallurgical and materials engineering involves the study of metals, alloys, and other materials, and their properties and applications. This branch of engineering covers areas such as materials science, metallurgy, and nanotechnology.
7. Biological Sciences and Bioengineering: Biological sciences and bioengineering involve the application of engineering principles to biological systems, including medical devices, biotechnology, and tissue engineering.
8. Environmental Engineering and Management: Environmental engineering and management involve the study and management of environmental systems, including air, water, and soil pollution, waste management, and sustainable development.

These are just a few examples of the engineering branches offered in IITs, and each branch covers a wide range of topics and sub-disciplines. Students can specialize further in these branches by choosing specific courses and projects within their area of interest.