List of top Chemistry Questions asked in CUET (UG)

Acetaldehyde and benzaldehyde can be best distinguished by:

Which of the following statements relating to the acidic character of alcohols is not true ?

Predict the major product in the following reaction:

Ammonia is manufactured by:
\[ \text{N}_2(g) + 3\text{H}_2(g) \rightleftharpoons 2\text{NH}_3(g) \quad \Delta H_f^\circ = -46.1 \, \text{kJ/mol} \] The various steps involved are:
(A) Condensation of mixture of gases
(B) Passing the gaseous mixture over catalyst
(C) Compression of the mixture of gases
(D) Recirculation of the gaseous mixture
Choose the correct answer from the options given below:

Match List I with List II

List-I		List-II
(A)	Oxidation state of Mn in MnO2 is	(I)	+2
(B)	Most stable oxidation state of Mn is	(II)	+3
(C)	Most stable oxidation state of Mn in \(MnO_{4}^{-}\) is	(III)	+4
(D)	Characteristic oxidation state of  lanthanoids is	(IV)	+7

Choose the correct answer from the options given below:

Match List I with List II

List-I		List-II
(A)	Hexagonal	(I)	∝ ≠ β ≠ γ ≠ 90°
(B)	Orthorhombic	(II)	∝ = γ = 90°, β ≠ 90°
(C)	Triclinic	(III)	∝ = β = 90°, γ = 120°
(D)	Monoclinic	(IV)	∝ = β = γ = 90°

Choose the correct answer from the options given below:

The vapor pressure curve of the mixture of ethanol and acetone is higher than its constituents because:

2,4-DNP is ______

Glycoside linkage is the ether bond present in between two:

In amines, the nitrogen atom is A and B hybridised, making geometry of amines as C. Then A, B, and C respectively are:

The number of unpaired electron in gaseous ions Mn³⁺(Z=26), V³⁺ (Z=23), Cr³⁺ (Z=24) are respectively :

Ferric oxide in blast furnace's upper half is mainly reduced by:

Decreasing order of reducing power of the given species as per their standard reduction potential is :
A. -2.36
B. +0.54
C. +1.23
D. -0.74
E. + 1.81
Choose the correct answer from the options given below:

The solution which shows positive deviation from Raoult's Law, is the mixture of

The rate constants of a reaction at 200 K and 300 K are 0.02 s^-1 and 0.04 s^-1. Ea for this reaction will be:

During bromination of phenol, lewis acid is not necessary required because of:

Which of the following is incorrect?

When 1.3-Diphenylprop-2-en-1-one is formed by the reaction of benzaldehyde and acetopheone in the presence of dil.NaOH followed by heating, which is the correct option ?

Match List -I with List-II

	List -I		List-II
A	Gel	I	Hair cream
B	Foam	II	Dust
C	Emulsion	III	Cheese
D	Aerosol	IV	Whipped cream

Choose the correct answer from the option given below

H-bond does not exist in:

Hydroxylation of Trans But-2-ene results in the formation of-

\(C_2H_5OH\xrightarrow{X}C_2H_5Cl\xrightarrow{Y}C_2H_5CN\)
X and Y used in the above reaction are:

The chemical used for leaching of silver and gold is :

Arrange the following solids in the decreasing order of their magnetic strength in the presence of external magnetic field.
A. NaCl
B. CrO₂
C. MnO
D. Fe₃O₄

Silicon doped with electron elements of group-13 forms.