List of top Chemistry Questions asked in CUET (UG)

Match List-I with List-II.

List-I		List-II
(A)	Molecular solid	(I)	CaF2
(B)	Ionic solid	(II)	Cu
(C)	Metallic Solid	(III)	CCl4
(D)	Covalent solid	(IV)	SiC

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Which of the given alkylhalide would undergo racemisation when hydrolysis is done with aq. KOH?

Predict the shape of XeOF₄, on the basis of VSEPR theory

The incorrect equation for Arrhenius equation for activation energy is:

Which of the following is not characteristic of chemisorption?

Which among the following solids is an example of ionic solid ?

For the cell: Ni (s) | Ni²⁺ (0.1M) || Cu²⁺ (0.1M) | Cu(s) the cell potential will increase when,

Match List I with List II

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Identify the product formed when cyclohexanone undergoes Aldol condensation

Compound B in the above reaction is

The process of accumulation of molecular species at the surface of solid or liquid is called adsorption. It may be physisorption or chemisorption. Low temperature is favorable for physisorption. Amount of gas adsorbed by a solid depends upon nature of gas. Easily liquifiable gases are readily adsorbed. Catalyst increases the rate of reaction. Catalysis may be homogenous or heterogenous Enzymes are biological catalysts. They work at optimum pH and temperature. Solutions are of three types i.e. true solutions, colloids and suspensions. Depending on the interaction between dispersed phase and dispersion medium colloids may be Lyophilic and Lyophobic, Depending on type of particles there may multimolecular, macromolecular and associated colloids. Sol, gel, emulsions are also various types of colloids.

When two different halogens react with each other, interhalogen compounds are formed. They can be assigned general compositions as XX’, \(XX'_3,  XX'_5\) and \(XX'_7\), where X is a halogen of larger size and X of smaller size and X is more electropositive than X increases, the number of atoms per molecule also increases.
On the basis if above passage, answer the questions

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

Correct increasing order of freezing point of 1M solution:
A) \(Na_3(PO_4) > K_2SO_4 > NaCl > K_4[Fe(CN)_6]\)
B) \(K_4[Fe(CN)_6] < Na_3(PO_4) < K_2SO_4 < NaCl\)
C) \(Na_3(PO_4) < K_2SO_4 < NaCl < K_4[Fe(CN)_6]\)
D) \(NaCl > K_2SO_4 > Na_3(PO_4) > K_4[Fe(CN)_6]\)
E) \(K_2SO_4 > NaCl > K_4[Fe(CN)_6] > Na_3(PO_4)\)
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\([CoF_6]^{3-}\) using valence bond theory can be explained as

In Clemensen reduction the reagents are -
A) Zu-Hg
B) HCL
C) Zn
D) \(H_2SO_4\)
E) Cu
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Match List - I with List- II.

List - I	List - II
(A) Zone refining	(I) Aluminium
(B) Blast furnace	(II) Iron
(C) Froth floatation process	(III) Metal Sulphides
(D) Hall-Heroalt process	(IV) Germanium

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Match List - I with List- II.

List - I	List - II
(A) Phenols	(I) Lucas Test
(B) Ethers	(II) Reimer Tiemann reaction
(C) Alcohols	(III) Williamson's Synthesis
(D) 2, 4,6 - trinitrophenols	(IV) Picric acid

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In the metallurgy of silver and that of gold, the respective metal is leached with a dil. solution of NaCN from which silver and gold is later recovered by

Expected products of hydrolysis of Lactose are:

p-Aminoazobenzene, a yellow dye, is produced in

Colour of Manganate ion in \(KMnO_4\) is due to:

List of Ligands are given below from spectrochemical series, re-arrange in the order of increasing field strength
A) \(SCN^-\)
B) \(Cl^-\)
C) \(F^-\)
D) \(OH^-\)
E) \(CN^-\)
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Rate of a particular reaction is represented by:
Rate = \(K [A]^0 [B]^2\)
The unit of rate constant K' in this case will be

The best proton donor is:
A) \(H_2O\)
B) \(CH_3CH_2CH_2OH\)
C) \(CH_3CH_2CH_2CH_2OH\)
D)
Choose the correct answer from the options given below.