Aneutralization reaction between an acid and a metal hydroxide produces
a) water and a salt
b) hydrogen gas
c) oxygen gas
d) sodium hydroxide
e) ammonia

Answer : The correct option is, (a) water and a salt

Explanation :

Neutralization reaction : It is a type of chemical reaction in which an acid react with a base or metal hydroxide to give salt and water as a product that means it reacts to give a neutral solution.

For example :

When sodium hydroxide base react with hydrochloric acid then it react to gives sodium chloride and water as a product.

The balanced chemical reaction will be:

Hence, the correct option is, (a) water and a salt

in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.