What is the unit of calorific value?

Magnesium oxide (MgO) + Water (H2O) = ?

Notepad' is a text editor in which of the following operating systems?

The substances which reduce friction are called _________.

If the speed of an object moving along a straight line keeps changing, its motion is said to be _________.

Which is the only one example of Mollusca Phylum?

In roots, the protoxylem lies towards periphery and metaxylem lies towards the centre. Such arrangement of primary xylem is called ____________.

Order Primata comprising monkey, gorilla and gibbon is placed in class Mammalia along with order Carnivora that includes?