Which statements are incorrect for mechanisms of nerve impulse conduction along electrical junctions of neuron or electrical synapse?

(i) Nerve impulse flow directly from one neuron to other across the synapses in electrical synapses.

(ii) Transmission of an impulse across electrical synapses is very similar to impulse conduction along a single axon.

(iii) Impulse transmission across an electrical synapse is always faster than that across a chemical synapse.

(iv) Electrical synapses are rate in our system.

(v) At n electrical synapses, the membrane of the pre and post-synapse, neurons are separated by a fluid-filled space called synaptic cleft is thick.

(vi) Chemicals called neurotransmitters are involved in the transmission of impulses at this synapse.