`h_i / h_o` is magnification . Does it have any relation with the value of `v/u` ?

Write any five consecutive natural numbers and find their sum. Does the middle number have any relation with the sum?

Why is the land ploughed before the beginning of summer? Does it have any relation to the capillary rise?

Find the true statement/statements i. Delta_(eg)H is related to electron affinity (Ae) as per the equation Delta_(eg)H=-[Ae+5/2RT] ii. At absolute zero temperature, EGE and A_(e) are the same. iii. Delta_(eg)H_(2) of a number of elements is +ve. iv. Delta_(eg)H_(1) of Be, Mg, N and noble gases are -ve. v. A higher -ve value of Delta_(eg)H_(1) shows a higher electron affinity, but not always. vi. Delta_(eg)H_(1) is of N, O, F and Ne have a relatively lower -ve values as compound with the next group member. vii. Group 14 elements (except lead) have a higher -ve value of Delta_(eg)H_(1) compound with group 15 elements.

Write any two uses of H_2O_2

From the rate expression for the following reactions determine the order of reaction and the dimensions of the rate constant. H_2O_(2(aq))+3I_(aq)+2H^+_(aq)rarr 2H_2O_(R)+ I_3 Rate =K[H_2O_2] [I^-]

Amongst the following ions which one has the highest magnetic moment value? (i) [Cr(H 2 ​ O) 6 ​ ] 3+ (ii) [Fe(H 2 ​ O) 6 ​ ] 2+ (iii) [Zn(H 2 ​ O) 6 ​ ] 2+

Under standard conditions for all concentrations, the following reactions is spontaneous at 25^@C O_2(g)+4H^+ (aq)+4Br^(-) (aq) to 2H_2O (l) +2Br_2 (l), E^@=0.16V IF [H^+] is adjusted by adding a buffer of 0.10 M NaOCN and 0.10 M HOCN (K_a=3.5 times 10^-4) what value will E_(cell) have and will the reaction be spontaneous at this [H^+] ?