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.

The figure shows energy levels of a certain atom, when the system moves from level 2E to E, a photon of wavelength $\lambda$ is emitted. The wavelength of photon produced during its transition from level 4/3 E to E level is:

An  α-Particle of energy 5 Mev is scattered through 180 by a fixed uranium nuclear The closest distance is in the order of: