Two samples of DNA, X and Y have melting temperature `(T_m)` as 340 and 350K respectively. What do the data indicate regarding their base content ?

Two elements X and Y have atomic numbers 12 and 16 respectively. Write the electronic configuration for these elements. To which period of the modern perioidic table to these two elements belong? What type of bond will be formed between them and why?

Two metals X and Y have work functions 2eV and 5eV respectively. Which metal will emit electrons, when irradiated with light of wavelength 400m, and why?

Two rods X and Y are of equal lengths. Each rod has its ends at temperature T_1 and T_2 . What is the condition that will ensure equal rate of flow of heat through the rods X and Y?

Football teams T_(1)and T_(2) have to play two games are independent. The probabilities of T_(1) winning, drawing and lossing a game against T_(2) are 1/2,1/6and 1/3, respectively. Each team gets 3 points for a win, 1 point for a draw and 0 point for a loss in a game. Let X and Y denote the total points scored by teams T_(1) and T_(2) respectively, after two games. P(X=Y) is

A group between x/m and the presure P of the gas at a constant temperature is called adsorption siotherm. Where x is the no. of moles of the adsorbate and m is the mass of the adsorbent. adsoption isotherms of different shaopes have been experimentally observed .. According to frundlich adosroption isthem, x//m = KP^(1//n) where K and N are constant paraments depending upon the nature of the solid and gas graph between log (x/m) and log P is a straight line a t angle 45^(@) with intercept OA as shown . hence, (x/m) at a pressure of 2 atm is :

The following curve is obtained when molar conductivty, Lambda_m is plotted against the square rot of concentration, C^(1//2) along y and x axis respectively for the two electrolytes X and Y. How do you account for the increase in Lambda_m for the electolytes X and Y with dilution?

Suppose that the foci of the ellipse (x^2)/9+(y^2)/5=1 are (f_1,0)a n d(f_2,0) where f_1>0a n df_2<0. Let P_1a n dP_2 be two parabolas with a common vertex at (0, 0) and with foci at (f_1 .0)a n d (2f_2 , 0), respectively. Let T_1 be a tangent to P_1 which passes through (2f_2,0) and T_2 be a tangents to P_2 which passes through (f_1,0) . If m_1 is the slope of T_1 and m_2 is the slope of T_2, then the value of (1/(m_1^ 2)+m_2^ 2) is

The Sun is a hot plasma (ionized matter) with its inner core at a temperature exceeding 107 K, and its outer surface at a temperature of about 6000 K. At these high temperatures, no substance remains in a solid or liquid phase. In what range do you expect the mass density of the Sun to be, in the range of densities of solids and liquids or gases ? Check if your guess is correct from the following data : mass of the Sun = 2.0 xx 10^30 kg , radius of the Sun = 7.0 xx 10^8 m .

Consider three planes P_1 : x-y + z = 1 , P_2 : x + y-z=-1 and P_3 : x-3y + 3z = 2 Let L_1, L_2 and L_3 be the lines of intersection of the planes P_2 and P_3 , P_3 and P_1 and P_1 and P_2 respectively. Statement 1: At least two of the lines L_1, L_2 and L_3 are non-parallel . Statement 2:The three planes do not have a common point