Hello aspirant

In each branch there is no success without hard work . Engineering involve dedication. But the subject you are interested in , becomes easier comparatively.

Electrical engineers are focused on the physics and mathematics of electricity, electronics and electromagnetism. This skill is used set to work on and improve every set of electrical equipment .

However students consider electrical engineering to be toughest because of the abstract thinking involved.

Civil engineering is the branch in which you can visually see the effect of what you are designing but you can't see electric currents and circuits hence electrical engineer's job is bit tough.

But if you have that skill or you are Keen interested in physics, you can easily work with electric circuits. Now this is to be noted that the student who has no much  knowledge of physics or whose discrete mathematics is not so strong should not go for electrical engineering.

Chemical engineering is link between manufacturing and science.

Engineering fields considered easier are

Environmental engineering

Industrial engineering

Architectural engineering

Dear aspirant,

According to your question and taking into consideration that you want to know about the toughness of engineering branches.

As such there is no branch which can  be considered the toughest and the one which is considered the easiest. But the amount that one has to study in each branch matters.

1- Mechanical/Electrical engineering

2-Ece

3-Computer science engineering

4-Civil/metallurgy/production