Processor, RAM, daughter cards, CMOS, Heat sink
No, the motherboard contains the majority of the electronic components. But, there is the removable media drives, the power supply, RAM sticks and depending on the options on your computer you'll have more. However, everything is attached to the motherboard in some way.
Pci cards
This all depends on the motherboard and the processor type. Rule of thumb...If there is a release of some sort, a lever, a bush tab etc it is removable.
Components on a motherboard are called embedded components.
A very useless motherboard
motherboard is the heart of the computer, also provide an area where the internal components can connect.
upgrade your computer components
Many motherboards have CPUs and graphics cards (GPUs) that attach to the motherboard via sockets. Some, however, have components that are soldered on to the motherboard and not meant to be removed. ASUS ROG series computers, for example, typically utilize GPUs and CPUs that are attached to the motherboard (they do not attach with a socket). You will notice that Intel CPUs with the "HQ" designation are the chips that are soldered on to the motherboard and are not meant to be removable. Intel CPUs ending in "MQ" are removable and can be easily swapped in and out of motherboards. Examples would be "Intel Core i7-4700HQ Processor" (non-removable) or "Intel Core i7-4810MQ Processor" (removable). Some things that are almost universally attached to the motherboard for all computers would be the PCI express sockets, CPU socket and connections for peripheral devices (like USB and headphone jacks).
No, a processor is not fixed to the motherboard. Most modern processors are designed to be easily removable and replaceable using a socket on the motherboard. This allows for easy upgrades or replacements without replacing the entire motherboard.
A motherboard is the physical arrangement in a computer that contains computers basic circuitry and components.
Yes motherboard is a hardware. And all other components that are attached on motherboard are hardware.
The chipset controls communications and interactions between the CPU and other components on the motherboard.