एटग्रेड अभ्यास पुस्तिका कक्षा-8 हिन्दी पेज 12 से 14 | Atgred Abhyash Pushtika Solution Class-8 Hindi

the daily minimum temperatures in degrees Celsius recorded in a certain Arctic region are as follows: -12. 5 ,-10. 8 ,-18. 6 ,-8. 4 ,-10. 8 ,-4. 2 ,-4. 8 ,-6. 7 ,-13. 2 , -11. 8 ,-2. 3 , 1.2 , 2.6 ,0,-2. 4 ,0, 3.2 , 2.7 , 3.4 ,0,-2. 4 ,-2. 4 ,0, 3. 2 , 2.7 , 3.4 ,0,-2. 4 ,-5. 8 ,-8. 9 ,-14 ,6,-12. 3 ,-11. 5 ,-7. 8 ,-2. 9 Represent them as frequency distribution table taking -19. 9\ to-15 as the first class interval.

We have taken a saturated solution of AgBr , whose K_(sp) is 12xx10^(-14). If 10^(-7)M of AgNO_(3) are added to 1L of this solutino, find the conductivity ( specific conductance ) of the solution in terms of 10^(-7)S m^(-1) units. Given : lambda^(@)._((Ag^(o+)))=6xx10^(-3)S m^(2) mol^(-1) lambda^(@)._((Br^(c-)))=8xx10^(-3)S m^(2)mol^(-1) lambda^(@)._((NO_(3)^(C-)))=7XX10^(-3)S m^(2) mol^(-1)

Calculate the value of mode for the following frequency distribution: Class: 1-4 5-8 9-12 13-16 17-20 21-24 25-28 29-32 33-26 37-40 Frequency: 2 5 8 9 12 14 14 15 11 13

1.4 g of acetone dissolved in 100 g of benzene gave a solution which freezes at 277.12 K . Pure benzene freezes at 278.4 K . 2.8 of solid (A) dissolved in 100 g of benzene gave a solution which froze at 277.76 K . Calculate the molecular mass of (A) .

Pick out the solution from the values given in the bracket next to each equation. Show that the other values do not satisfy the equation. (a) 5 = 60 (10 , 5, 12, 15) (b) n + 12 = 20 (12, 8, 20, 0) (c) p - 5 = 5 (0, 10, 5 - 5) (d) q/2 = 7 (7, 2, 10, 14) (e) r - 4 = 0 (4, -4.8.0) (f) x + 4 = 2 (- 2, 0, 2, 4)

Construct a frequency table for the following ages (in years) of 30 students using equal class intervals, one of them being 9-12, where 12 is not included. 18, 12, 7, 6, 11, 15, 21, 9, 8, 13, 15, 17, 22, 19, 14, 21, 23, 8, 12, 17, 15, 6, 18, 23, 22, 16, 9, 21, 11, 16.

100.0mL of a saturated solution of Ag_(2)SO_(4) is added to 250.0mL of saturated solution of PbCrO_(4) . Will may precipitate form and if so what? Given K_(sp) for Ag_(2)SO_(4), Ag_(2)CrO_(4), PbCrO_(4) ,and PbSO_(4) are 1.4 xx 10^(-5), 2.4 xx 10^(-12), 2.8 xx 10^(-13) , and 1.6 xx 10^(-8) , respectively.

Draw a pie-diagram representing the relative frequencies (expressed as percentage) of the eight classes as given below: 12.6, 18.2, 17.5, 20.3, 2.8, 4.2, 9.8, 14.7

Construct a frequency distribution table for the following data, taking class-intervals 4-6, 6-8 , ............. 14-16 . 11.5, 6.3, 7.8, 9.2, 10.5, 4.5, 6, 8.3, 12.5, 15.8, 7.4, 5.3, 8.4, 15.2, 8.9, 9.8, 8.25, 6.5, 5.8, 10.5, 14.2, 15.3, 11.7, 9.9, 8.8, 6.6, 4.3, 4.7, 9.4, 10.1, 15.5, 14.4, 12.2, 7.7, 5.5 .