Question 1 of 10

The coherent sources whose intensity ratio is 81:1 produce interference fringes. The ratio of minimum to maximum intensity i.e. I_min:I_max is

Question 2 of 10

Standard enthalpy and standard entropy change for the oxidation of {tex}NH_3{/tex} at 298 K, are {tex}-382.64 kJ mol^{-1}{/tex} and {tex}-145.6 J mol^{-1}{/tex} respectively. Standard Gibbs energy change for the same reaction at 298 K is :

Question 3 of 10

Which of the following statement is true?

Question 4 of 10

Fear or exitement, generally cause one to breath rapidly and it results in the decrease of {tex}CO_2{/tex} concentration in blood. In what way will it change the pH of blood?

Question 5 of 10

Two identical balls A and B collide head on elastically. If the velocity of A and B before collision are 0.5 m/s and -0.3m/s respectively, then their velocities after collision will be

Question 6 of 10

If for a plane, the intercepts on the co-ordinate axes are 8, 4, 4 then the length of the perpendicular from the origin on to the plane is

Question 7 of 10

Question 8 of 10

The area (in square unit) enclosed by the curve y = 4 x³ and y = 16x is

Question 9 of 10

In Young's double slit experiment, the width of one of the slits is slowly increased to make it twice the width of the other slit. Then in the interference pattern:

Question 10 of 10

B.H.C is prepared by treating benezene with