The increasing order of effusion among the gases `H_(2), O_(2), NH_(3)` and `CO_(2)` is

The correct order of bond angles among the compounds CH_(4) , NH_(3) and H_(2)O is (A) H_(2)O (B) NH_(3) (C) NH_(3) (D) CH_(4) < H_(2)O < NH_(3)

The correct increasing order of Vanderwaal constant 'b' for H_(2) , O_(2) , CO_(2) , He gases is

The correct order of magnitude of bond angles among the compounds CH_(4),NH_(3) and H_(2)O is

The bond angles in molecules H_(2)O, NH_(3), CH_(4) and CO_(2) are in the order :

The bond angles in molecules H_(2)O, NH_(3), CH_(4) and CO_(2) are in the order :

The correct increasing order of acidic strength is, (A) OH^(-) (B) H_(3)O^(+) >HF> H_(2)O > NH_(4)^(+) > OH^(-) (C) NH_(4)^(+) (D) H_(3)O^(+) < NH_(4)^(+) < HF < OH^(-) < H_(2)O

Arrange the following gases in the increasing order of their densities at STP: H_(2) , air CO_(2) .

Arrange the following: (i) In decreasing order of the pK_(b) values: C_(2)H_(5)NH_(2),C_(6)H_(5)NHCH_(3),(C_(2)H_(5))_(2)NHandC_(6)H_(5)NH_(2) (ii) In increasing order of basic strength: C_(6)H_(5)NH_(2),C_(6)H_(5)N(CH_(3))_(2),(C_(2)H_(5))_(2)NH andCH_(3)NH_(2) (iii) In increasing order of basic strength: (a) Aniline, p-nitroaniline and p-toluidine (b) C_(6)H_(5)NH_(2),C_(6)H_(5)NHCH_(3),C_(6)H_(5)CH_(2)NH_(2) (iv) In decreasing order of basic strength in gas phase: C_(2)H_(5)NH_(2),(C_(2)H_(5))_(2)NH,(C_(2)H_(5))_(3)NandNH_(3) (v) In increasing order of boiling point: C_(2)H_(5)OH,(CH_(3))_(2)NH,C_(2)H_(5)NH_(2) (vi) In increasing order of solubility in water: C_(6)H_(5)NH_(2),(C_(2)H_(5))_(2)NH,C_(2)H_(5)NH_(2^.)