1 Most materials have weak magnetic properties because _____
a their paired electrons spin in opposite directions
b their magnetic domains are aligned
c their electrons spin
d their atoms are electrically neutral
2 Which is a brittle material that is stronger than most metals and is commonly used in magnets?
3 Alnico is _____
a an alloy of metals with strong magnetic properties
b any material containing iron
c a brittle mixture of substances containing ferromagnetic element
d an element found in nature that behaves like a magnet
4 Which particle in an atom creates a tiny magnetic field when it spins?
5 Magnetic domains are _____
a groups of atoms that act like little magnets
b atoms that have north and south poles
c groups of atoms that have paired electrons
d atoms with electrons that spin in opposite directions
none are correct. Number 2 question is technically and issue of the word "stronger". Stronger in what sense? tensile strength? Magnetic properties? ductle? Ferrite is a brittle ceramic material, as the question is written, I would go with that. It is a poorly worded question.