Questions

A metalloid is any chemical element which has properties in between those of metals and nonmetals, or that has a mixture of them.

The six commonly recognised metalloids are

boron,

silicon,

germanium,

arsenic,

antimony, and

tellurium.

Sober means not afected by alcohol, clear headed, very serious, sensible,...

Antonyms of Sober are :: light hearted, frivolous, sensational, emotional,...

Kabuki

Energy is measured in units called Joules.

Joule is unit of work or energy in the International System of Units (SI) which is equal to the work done by a force of one newton acting through one metre.

1 Joule  =  10⁷ ergs or 0.7377 foot-pounds.

THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG.

India ranks 131 in the 2016 Human Development Index (HDI) among the 188 countries. It scored 0.624 and was placed in medium human development category.

The index was unveiled recently as part of the Human Development Report (HDR) 2016 titled Human Development for Everyone published by the United Nations Development Programme (UNDP).

Optical illusion is what that refers to persistence of vision with a principle that multiple images blend into a single image in human mind and what is showed in cinema.

Hence, Persistence of vision is the principle behind cinema.