List of top Chemistry Questions asked in CUET (PG)

Using Slater's rule, the shielding constant and effective nuclear charge for the outermost electron of Mg are respectively.

Which of the following zones in a river stretch will have highest biological oxidation demand?

A state (n₁, n₂ ) for a particle in a rectangular box with sides of length L₁ = L and L₂ = 2L that is accidentally degenerate with the state (4, 4) is

Choose the correct statements:
(A) The pH of unpolluted natural rain water is ~5.6
(B) \(H_2SO_4\) and \(HNO_3\) are predominat acids in acid rain
(C) Acidic rainwater have pH less than 5.6
(D) Acid rain affect monuments, buildings and soil fertility
(E) Neutral pH of unpolluted natural rain water is 7
Choose the correct answer from the options given below:

Which of the following is NOT a cellulosic fibre?

The phenomenon of existence of two or more compounds possessing the same molecular formula but different properties is referred as ________ .

Which of the following are acetals ?

Which of the following vitamin is called as 'Tocopherol'.

The PH value of milk is.

Which of the following diseases is not caused by water pollution?

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: cyanide and phosphorus trifluoride ligands stabilize metals in low oxidation states.
Reason R: Cyanide and phosphorus trifluoride ligands are excellent π-acceptor ligands.
In the light of the above statements, choose the most appropriate answer from the options given below:

The correct statements for second law of thermodynamics is/are
A. Heat does not flow spontaneously from a cool body to a hotter body
B. The entropy of perfectly crystalline substance is zero at 0 K.
C. No process is possible in which the sole result is the absorption of heat from a reservoir and its complete conversion to work.
D. For a spontaneous change ΔS_total > 0
Choose the most appropriate answer from the options given below:

Treatment of 1-Methylcyclohexene with an ether solution of diborane (B₂H₆), followed by reaction with alkaline H₂O₂ produces which of the following product ?

Which of the following complexes are diamagnetic complexes ?

The energy required for various electronic transitions follow the order

Match List I with List II

List I		List II
A.	\(∇^2\psi+\frac{8\pi^2m}{h^2}(E-V)\psi=0\)	I.	Planck
B.	\(E=hv\)	II.	Heisenberg
C.	\(\Delta x.\Delta p≥\frac{h}{4\pi}\)	III.	Schrodinger
D.	\(\lambda=\frac{h}{p}\)	IV.	de Broglie

Choose the correct answer from the options given below:

Identify the correct statements applicable to rotational spectroscopy.
A. It lies in the microwave region
B.The molecules must have permanent dipole moment
C. The selection rule is AJ = ±2
D. Only one transition is observed at room temperature.
Choose the correct answer from the options given below:

Oxidation state of Sulphur in dithionite and dithionate ions are respectively

Which among the following is wrong statement ?

Calculate the number of moles of carbon mono oxide in the following reaction
CH₃CH₂CHO \(\stackrel{hv}{→}\) CH₃CH₃ + CO
If the light irradiated has λ= 3020 A°, the quantum yield of reaction 0.54 and the light energy absorbed is 15000 erg in a given time.

The first order diffraction from (110) plane of KCl observed using X-ray of wavelength 150 pm and edge length of unit cell is 305 pm, then glancing angle is equal to -
[sin 20.35° = 0.3478
sin 38.35° = 0.6205
 sin 40.35° = 0.6475
 sin 18.35° = 0.3148]

Given below are two statements:
Statement I: The conversion of diamond to graphite at room temperature and pressure is spontaneous (ΔG=-2.90 kJ mol^-1)
Statement II: The electrical conductivity of graphite perpendicular to the plane is low, whereas parallel to the plane is very high.
In the light of the above statements, choose the most appropriate answer from the options given below:

A liquid having molar mass of 50 g mol^-1 boils at 80°C. If the latent heat of vapourization is 500 cal g^-1, the molar entropy of vapourization is

The decomposition of CaCO3 in a closed vessel is represented by the equation
CaCO₃ ⇌ (s) CaO (s) + CO₂ (g)
Calculate the number of phases, components and degree of freedom

Which of the following form square planar complexes
A. [AuCl₄]
B. [RhCl(PPh₃)₃]
C. [NiBr₄]^2-
D. [FeCl₄]^2-
Choose the correct option :