Luckily, nuclear rectors are too large to be ran over by a tow truck. However, if one did get ran over by a tow truck, nothing would happen. The containment vessel is enormously strong, and the outer structure is even stronger, so no meltdown would happen.
The world would be very different
Catholicism
the nuclear reactor exploded
If the control rods in a nuclear reactor were somehow to be instantly "jerked" out of the reactor, the reactor would go supercritical. If they were pulled at a normal rate and all of the control rods were pulled out, the reactor would start up and heat up and would end up running far too hot. Any one of several safety systems would shut the reactor down before this could happen. If the safety systems were disabled, the reactor would overheat and a meltdown may occur.
This part is the core of the nuclear reactor containing the nuclear fuel.
If a nuclear reactor leaked you would have to evacuate the area around the plant and you would attempt to stop the leak and probably depending on the severeity level of the situation you may need to 'SCRAM' the reactor.
No, a nuclear reactor would not explode solely due to the absence of people. Reactor safety systems are designed to shut down automatically in case of any abnormal conditions, such as the reactor overheating or losing cooling. The presence or absence of people would not impact the reactor's physical safety mechanisms.
If water stopped flowing through a nuclear reactor, the cooling system would fail, leading to a buildup of heat. This could result in the fuel rods overheating and potentially melting down, causing a severe nuclear accident like a meltdown. Cooling water is essential for regulating the temperature and preventing the reactor from overheating.
Highly unlikely if not altogether impossible. In a core meltdown, you might see a steam explosion if the core melts and breaches the containment structure and hits say cooling water. But even a runaway chain reaction in a reactor would not cause a nuclear explosion like a bomb.
It would be used as a more efficient version of a Nuclear Reactor. While a regular nuclear reactor requires almost a factor of 100 greater in fuel amounts, a Breeder reactor uses much less and produces less waste.
If the control rods in a nuclear reactor overheat, they might deform or even melt, leading to a loss of their ability to regulate the nuclear reaction. This can result in a rapid increase in reactor power and potential overheating of the reactor core, increasing the risk of a meltdown. Cooling systems and emergency protocols are in place to prevent such incidents.
It's really just a matter of degree, all reactors produce some power. Those used in a power plant will produce perhaps 3000 to 5000 Megawatts thermal. Low power reactors producing a few kilowatts are used for experiments, teaching in universities, and for producing radioisotopes by irradiating samples, but reactors in this sort of power level would not be harnessed to produce electricity, the heat produced if large enough would be removed and rejected to the atmosphere or to a water cooling circuit. This makes them simple to operate and to start and stop as required.