Questions

The outermost layer of skin is

Earth-worms belongs to the phylum

Which of the following Phylum are also called flatworms?

Fermentation is a type of _____________ process.

In which of the following solution the concentration of H+ ion is the maximum?

What is the common name of the solution of calcium hydroxide?

If x stands for addition, / stands for subtraction, + stands for multiplication and - stands for division, then what is the value of 20 x 8 / 8 - 4 + 2 ?

Rakhi got engaged 10 years ago. Rakhi's present age is 5/3 of her age at the time of engagement. If the present age of Rakhi's mother is twice that ofpresent age of Rakhi, then what was her mother's age (in years) at the time of her engagement?