NCERT 2022 | संबंध एवं फलन - L7 | Relation and function | Hindi Medium | Akshay Sir | 6 PM

Which of the following sentences are statements? In case of a statement mention whether it is true or false. (i) The sun is a star. (ii) sqrt(7) is an irrational number. (iii) The sum of 5 and 6 is less than 10. (iv) Go to your class. (v) Ice is always cold. (vi) Have you ever seen the Red Fort? (vii) Every relation is a function. (viii) The sum of any two sides of a triangle is always greater than the third side. (ix) May God bless you!

which of the following relation are functions and give reason if it is a function determine its domain and range {(2,1),(4,2),(6,3),(8,4),(10,5),(12,6),(14,7)}

Which of the folllowing option is true related to production and functions of a molecule which is a glycoprotein and represented as H_2L_2 . ltimg src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/ALN_BIO_C13_E09_018_Q01.png" width="80%"gt

Which of the following relations are functions from A to B write their domain and range if it is not a function give reason ? f:A rarr B is defined by f={(1,-2),(3,7),(5,6),(9,0)},A={1,3,5,9},B={-2,7,-6,0,1,2}

Which of the following relations are functions? Give reason. If it is a function, determine its domain and range. (i) R= {(2,1), (3,1), (4,2), (5,7), (6,9)} (i) R = {(2,2), (2,4),(3,3),(4,4),(5,8)} (iii) R={(1,3),(1,5),(2,5),(3,6),(3,7)}

Which of the following relations are functions? Give reasons. If it is a function, determine its domain and range: (i) {(2,1), (3,1),(4,2)} (ii) {(2,2),(2,4),(3,3),(4,4)} (iii) {(2,1),(5,1),(8,1),(11,2),(14,2),(17,2)} (iv) {(1,2),(2,3),(3,4),(4,5),(5,6),(6,7)} (v){(2,1),(4,2),(6,3),(8,4),(10,5)} (vi) {(1,2),(2,3),(3,4),(3,5),(3,7),(4,8)}

Which of the following relations are functions? Give reasons. If it is a function, determine its domain and range. (i) {(2,1),(5,1),(8,1),(11,1),(14,1),(17,1)} (ii) {(2,1),(4,2),(6,3),(8,4),(10,5),(12,6),(14,7)} (iii) {(1,3),(1,5),(2,5)}

Is the following relation a function ? Justify your answer: (i) R_(1) = {(2,3), ((1)/(2), 0), (2,7), (-4,6)} (ii) R_(2) = {(x,|x|): x" is a real number" )

In iodometric titrations, an oxidizing agent such as KNnO_(4), K_(2)Cr_(2)O_(7),CuSO_(4),H_(2)O_(2) is allowed to react in neutral medium or in acidic medium with excess of potassium iodide to liberate free iodine Kl+ oxidizon agent to l_(2) Free iodine is titrated against stanard reducing agent usually with sodium thiosulphate i.e., K_(2)Cr_(2)O_(7)+6Kl+7H_(2)SO_(4)toCr_(2)(SO_(4))_(3)+4K_(2)SO_(4)+7H_(2)O+l_(2) 2CuSO_(4)+4Kl to Cu_(2)l_(2)+2K_(2)SO_(4)+l_(2) l_(2)+Na_(2)S_(2)O_(3)to 2Nal+Na_(2)S_(4)O_(6) In iodometric titrations, starch solution is used as an indicator. Starch solution gives blue or violet colour with free iodine. At the end point, blue or violet colour disappear when iodine is completely changed to iodide. A 1.1g sample of copper ore is dissovled and Cu^(2+) (aq.) is treated with Kl.l_(2) liberated required 12.12mL of 0.1M Na_(2)S_(2)O_(3) solution for titration. The % Cu in the ore in the ore is: