neet-2018 Question Bank - Sarthaks eConnect

Identify correct order of enol content?

Identify anti aromatic compound?

Identify correct heat of hydrogenation order:

(I) `POF_3` (II) `SOF_4` (III) `IOF_5`

On moving I to III which change is NOT observed

(1)	Number of d-orbitals involved in bonding	(I) one`->`(II) Two`->`(III) Three
(2)	Number of orbitals involved in hybridisation	(I) Four`->`(II) Five`->`(III) Six
(3)	Number of `d_pi-p_pi` bonds in the respective molecule	(I) One`->`(II) Two`->`(III) Three
(4)	Number of lone pairs on central atom	(I) Zero`->`(II) Zero`->`(III) Zero

Hydrogen bonding is NOT responsible for

Bond angles `104^o, 117^o` and `180^o` are associated with

`XeF_4` has total 36 valence electrons. Select correct for uses of valence electrons in `XeF_4`

Set of species in which 3^rd principal level is completely filled

Select set of quantum number which is NOT associated with any electron in Cr (Z=24)

Maximum enthalpy change is associated with

If coordinate ‘X’ is atomic number then select best for ‘Y’ coordinate

Which of the following plots of radial probability function `4pir^2Psi_r^2` is incorrectly labelled

The wave no. of the first line of Balmer series of H atom is 15200 `cm^(-1)`. What is wave number of the first line of Lyman series of `Li^(2+)`.

An aqueous solution of 18 gm oxalic acid `(H_2C_2O_4)` is made up to 400 ml. Calculate the volume of 0.1 M NaOH required to completely neutralize 50 ml of above solution -

Equal volume of liquid A (d=0.8 gm/ml) and liquid B (d=1.2 gm/ ml) are mixed to form a solution. Calculate mole fraction of A in solution `[M_A=16, M_B=32]`

For the reaction

`2NO_2(g) ⇄ N_2O_4(g)` at 300 k

The value of Kp is 2at`m^(-1)`. The total pressure at equilibrium is 10 atm. If volume of container become two times of its original volume, what will be its equilibrium pressure at 300K.

In the equilibrium reaction

`AgCl(s)+2NH_3(aq.) ⇄ Ag(NH_3)_2^+ (aq.)+Cl^- (aq.)`

Increase in the concentration of `Cl^-`(aq.) causes.

`CH_4` gas behaving non ideally. Compressibility factor for gas is 1.5 at 2 atm, 400K. Calculate molar volume for gas

[Given=R=0.08 `text(Litre -atm)/text(K-mole)`]

Which graph is not a straight line for an ideal gas

Equal masses of three non-reacting different ideal gases X, Y and Z are mixed in a sealed rigid container. If the temperature of the system remain constant at 400K, which of the following statement about gas X can never be correct-

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