Which is not digested by human?
Which is a method to prevent rust?
How many lines of symmetry are there in a regular hexagon?
The solution of the equation x + 3 = 0 is _______.
A comet tail is made of gas and dust. Which comet has the longest tail ever recorded?
Which is a common property shared by a star and a galaxy?
Person whose signature is required on cheque is called _____________.
The first cash machine was installed by ______________ bank.
The C++ programming language is very popular because it is ____________________.
Malicious software is known as _______________________.