The correct answer is false. A compound microscope can magnify something up to 200 times and further. A compound microscope is a microscope with more than one lens and its own source of light. Today's strongest compound microscopes have magnifying powers of 1000 times to 2000 times.
Rock that has formed by sediment deposited by water or air
Among BF₃, NF₃, OH⁻ and ALCl₃ both NF₃ and OH⁻ acts as a lewis base.
Explaination:
According to lewis theory of acid and base, base is a specie which has either lone pair of electrons or is negatively charged. So, in the given compounds Nitrogen trifluoride contain lone pair of electron on nitrogen and Hydroxide contains a negative charge on oxygen. And botha are capable to donate these electrons to a lewis acid (electrophiles).