Which of the following have covalent, coordinate and ionic all three type of bonds -
a) NH4Cl
b)KNO₃
c)K₃[Fe(CN)₆]
d)H₂CO₃

The true statements from the following are-
a)PH₅,NCl₅ and BiCl₅ do not exist
b)I3+hasbentgeometry
c)XeF₄is non-polar molecule
d)CO and C₂–2 has same bond order
e)MgCl₂ has more ionic nature than MgO

The nature of π-bond in per chlorate (ClO₄^–) ion is-

Pick out the incorrect statement-

The correct order of increasing C–O bond length of CO,CO₃^2–,CO₂ is-

Increasing order of bond length in NO,NO⁺ and NO^– is-

The regular geometry of XeO₂F₂ is-

A σ bonded molecule MX₃ is T-shaped. The number of non-bonding pairs of electron is-

One of the resonating structure of SO–2 is  Which set of formal charge on oxygen and bond order is correct

Decreasingorderof dipolemomentofthe followingcompoundsis-
1)
2)
3) 

InPO₄^3–,the formal charge one ach oxygen atom and the P–O bond order respectively are-

Resonance is not shown by-

In which of the following compounds resonance does not occurs-
a)H₂O
b)SiO₂
c)SO₃
d)CO₂ Correct answer is–

Which one is the most resonance stabilized amongest the following-

Outofthetwocompoundsshown below,the vapour pressure of (B) at a particular temperatureisexpectedtobe:
and 

The equations of the sides of the Square for which (3, 4), (1, –1) are the end points of a diagonal are

tan (x) = (m1-m2)/(1+m1m2). this gives the relationship between the slope and angle between the two line.