Which amongst the following is the study of teeth and gum ?

The alloy is-

(A) mixture of two or more metals

(B) a mixture of a metal and a non-metal

(C) can not be separated into their components by physical methods

(D) brass is a mixture of zinc and tin

Choose the correct answer from the options given below:

The force of attraction between two unit point masses separated by a unit distance is called:

Which among the following statements are not correct?

(A) Raman Research Institute ____Bengaluru

(B) National Chemical Laborateries ____ Pune

(C) Solid State Physics Laboratory ____ Delhi

(D) National Physical Laborateries ____ Mumbai

(E) Regional Research Laboratereies ____ Delhi

Choose the most appropriate answer from the options below:

If the resultant of all the forces acting on a body is _________, then the body is said to be in equilibrium.

The value of Avogardro's Number is _________.

The phenomenon of "Mirage", that is usually observed in deserts, is the result of which of the following?