Questions

The main use of salt in the diet is to produce in small amounts the hydrochloric acid required for the digestion of food.

Undergraduates may get this question as feelers of their business knowledge. Insider trading describes the illegal activity of buying or selling stock based on information that is not public information. This is to prevent those with privileged information (company execs, I-bankers and lawyers) from using this information to make a tremendous amount of money unfairly.

Sum of all numbers in each row and columns must be 15.

In last row to gt sum as 15 missing number must replaced by 1. 

Light year is the unit of to express astronomical distances, that light can travel in one year. Light moves at a velocity of about 300,000 kilometers (km) each second. So in one year, it can travel about 10 trillion km. More precisely, one light-year is equal to 9,500,000,000,000 kilometers.

Approximately, 1 light year = 10^16 mts.

The world's tallest twisted tower, the Infinity Tower was launched in Dubai Marina on 10 June 2013.

A bottle has a mouth from which we used to drink water or any juice. But it cannot smile.