Std-10 Most Imp Ch 7 Gseb L-4

Valence Bond Theory -C.N.=6,all Possible Cases OF Para and dia in C.N.-4 and 6 (Most Imp) || Transfer OF Electron in Complex OF C.N. and C.N.-6

List two most common STDs.

Most common bacterial STD is:

When 20g of a compound (A) (M.F. = C_(4)H_(10)O_(4)) reacts with excess of CH_(3)MgBr , 14.6 L of CH_(4) is obtained at STP. What is structure formula of (A) ?

Under identical conditions of pressure and temperature, 4 L of gaseous moxture ( H_(2) and CH_(4) ) effuses through a hole in 5 min whereas 4 L of a gas X of molecular mass 36 takes to 10 min to effuse through the same hole. The mole ratio of H_(2):CH_(4) in the mixture is:

A piece of wire of length 4L is bent at random, to form a rectangle.The probaility that its area is at most (L^(2))/(4) is: