हेनरी का नियम Henry's Law विलयन Solution Ch1 Lec 4 | Class 12th/ NEET 2024 Chemistry By Poonam Ma'am

Satish is 15 ranks above Sushil who ranks 28th in a class of 50. What is Satish's rank from the bottom? 1) 39 2) 37 3) 38 4) 35 5) None of these

Ravi is 7 ranks ahead of sumit in a class of 39. If Sumit's rank is seventeenth from the last, what is Ravi's rank from the start? 1) 14th 2) 15th 3) 16th 4) 17th 5) None of these

Each of the questions below consists of a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and give answer 1) if the data in statement I alone are sufficient to answer the question while the data in statement II alone are not sufficient to answer the question. 2) if the data in statement II alone are sufficient to answer the question while the data in statement I alone are not sufficient to answer the question. 3) if the data either in statement I alone or in statement II alone are sufficient to answer the question. 4) if the data even in both statements I and II together are not sufficient to answer the question. 5) if the data in both statements I and II together are necessary to answer the question. 3. How many girls are taller than Samir in his class? I. When- students of Samir's class are ranked in descending order of their height, Samir’s rank is ,17th from the top among all the students and 12th among boys. II. Samir’s rank from the bottom on the basis of height among boys is 18th and among all students is 29th.

(a) State Raoult's law for a solution containing volatile components. How does Raoult' s law become a special case of Henry's law? (b) 1.00 g of a non-electrolyte solute dissolved in 50 g of benzene lowered the freezing point of benzene by 0.40 K. Find the molar mass of the solute. (K_(f)" for benzene "=5.12 kg mol^(-1))

Statement 1 : Let S_1: x^2+y^2-10 x-12 y-39=0, S_2 x^2+y^2-2x-4y+1=0 and S_3:2x^2+2y^2-20 x=24 y+78=0. The radical center of these circles taken pairwise is (-2,-3)dot Statement 2 : The point of intersection of three radical axes of three circles taken in pairs is known as the radical center.

Which of the following statemetn is // are correct ? I . Van't Hoff factor for 10^(-3) M CH_(3)COOH is 39//35 (wedge^(@)._(m)=350 S cm^(2) mol^(-1) and k=4xx10^(-5) S cm^(-1)). II. If wedge^(@)._(m) of KCl, LiCl, and KNO_(3) are 150, 115, and 145 S cm^(2) mol^(-1), then that of LiNO_(3) will be 110 S cm^(2) mo^(-1). III. In general, with increase in concentration, the specific conductance increases and reaches a maximum and then decreases with further increase in concentration.

A solution contins 0 .860 g of K_(2)SO_(4) in 500 mL solution . Its osmotic pressure is found to be 0.690 atm at 27^(@)C . Calculate the value of Van't Hoff factor . (At mass K = 39.0 , S = 32, O = 16 R = 0.082 atm mol^(-1) K^(-1) )