Questions

A direct strike occurs when an organized body of workers withholds its labor to force the employer to comply with its demands.

Convex mirror is used as rear view mirror in vehicles. Because the image is smaller, more image can fit onto the mirror, so a convex mirror provides for a larger field of view than a plane mirror. This is why they are useful.

Considering that citizens accused of crimes in the United States have the right to have their case heard in front of a jury of their peers, the government requires that citizens participate in jury duty. This responsibility is mandatory for individuals who are called on to serve. Failure to serve will result in legal punishments.

Deck of Cards are what we cut, mix and serve when we are playing with them.

Ethylene Glycol is an antifreeze is an additive which lowers the freezing point of a water-based liquid and increases its boiling point. 

The multiplier effect means that "An effect in economics in which an increase in spending produces an increase in national income and consumption greater than the initial amount spent."