Which of the following borane doesn't exist?
(A) `B _10 H_ 14`
(В) `B _10 H_ 16`
(C) `B_ 5 H _11 `
(D)` B_ 5 H _10`

Which of the following pairs of integers have 5 as a difference? (a) 10 , 5 (b) -10 ,\ -5 (c) 15 ,\ -20 (d) both (a) and (b)

Find DU of following compound:- (A) C_(8)H_(12) , (B) C_(5)H_(10) , ( C) C_(7)H_(8) , (D)

Write the IUPAC nam, bond line structure, and condensed formula for the following alkanes with the greatest number of (Me) groups. C_(7)H_(16) (b) C_(8)H_(18) (c) C_(10)H_(22) C_(11)H_(24)

Which out of the following is : ( a) the weakest acid (b) the strongest acid ? (i) C_(2)H_(5)OH (ii) CH_(3)COOH (iii) C_(6)H_(5)OH (iv) H_(2)O

A compound has the empirical formula C_(10)H_(8)Fe . A solution of 0.26 g of the compound in 11.2 g of benzene ( C_(6)H_(6) )boils at 80.26^(@)C . The boiling point of benzene is 80.10^(@)C , the K_(b) is 2.53^(@)C /molal. What is the molecules formula of the compound? (a) C_(30)H_(24)Fe_(3) (b) C_(10)H_(8)Fe (c) C_(5)H_(4)Fe (d) C_(20)H_(16)Fe_(2)

Find DU of following compound:- (a) C_(6)H_(6)O , (b) C_(6)H_(5)I , ( c) C_(6)H_(6)ClBrO , (d) C_(5)H_(9)N

Equimoler solulition of HF, HCOOH and HCN at 298 K have the values of Ka as 6.8xx10^(-4), 1.8xx10^(-4) and 4.8xx10^(-9) respectively, what will be the order of their acidic strength ? (A)H F > H C N > H C O O H (B)H F > H C O O H > H C N (C)H C N > H F > H C O O H (D)H C O O H > H C N > H F

Name the following boric acids: a. H_(3)BO_(3) or B_(2)O_(3).3H_(2)O b. HBO_(2) or B_(2)O_(3).H_(2)O c. H_(2)B_(4)O_(7) or 2B_(2)O_(3).H_(2)O d. H_(6)B_(4)O_(9) or 2B_(2)O_(3).3H_(2)O