List of top Chemistry Questions asked in CUET (UG)

Match List I with List II

List-I		List-II
(A)	Van Arkel Method	(I)	Copper
(B)	Zone Refining	(II)	Titanium
(C)	Mond Process	(III)	Germanism
(D)	Electrolytic Refining	(IV)	Nickel

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

The reactions taking place during electrolysis of aqueous solution of CuCl₂ with platinum electrodes are :
A. Cu²⁺(aq) + 2e^- → Cu(s)
B. H⁺(aq) + e^- → \(\frac{1}{2}H_2(g)\)
C. H₂O(l) + e^- → \(\frac{1}{2}H_2(g)+^-OH(aq)\)
D. Cl^-(aq) → \(\frac{1}{2}Cl_2(g)+e^-\)
E. 2^-OH(aq) → H₂O(l) + \(\frac{1}{2}O_2(g)+2e^-\)
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During peptization the
precipitate breaks up into smaller particles of the size of a colloid
molecules aggregate together to form a colloid
the precipitate adsorb one of the ions of the electrolyte on its surface
precipitate is shaken with the dispersion medium
molecules loses positive and negative charge.
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Which of the following statements are true?
A. Flocculation value is inversely proportional to the coagulating power.
B. Colloidal silicon is a protective colloid.
C. Alum is used for cleaning muddy water.
D. Gelatin is added to ice cream to act as an emulsifier.
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Match List I with List II

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Zone refining is based on the principle that

Phenol is manufactured from hydrocarbon, Cumene. Cumene is chemically:

Rate of a reaction changes from 2.48 x 10^-3 mol sec^-1 to 4.96x 10^-3 mol sec^-1 when concentration of reactant, is changes from 0.6M to 2.4 M respectively, the order of reaction is

The presence or absence of hydroxyl group on which carbon atom of sugar differentiate RNA and DNA:

Find the correct stoichiometric coefficients in the following redox equation:
xH⁺ + yC₆H₅CH₃ + wMnO^-₄ → aH₂O + bMn²⁺ + tC₆H₅COOH

An inorganic salt taken in a test tube was mixed with of freshly prepared ferrous sulphate solution. Concentrated sulphuric acid was then added along the walls of the test tube. Predict the formula of the compound formed:

Which of the following will not form propionaldehyde?

Match List I with List II

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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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Which one of the following statements is incorrect about enzyme catalysis?

Which of the following defects are shown by KCl crystal?
(A) Schottky defect
(B) Frenkel defect
(C) Metal excess defect
(D) Metal deficiency defect
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Vitamin C is also called-

What is basicity of \(H_3PO_4\)

The value of magnetic moment for \([CoF_6]^{3-}\) is:

The least basic hydroxide amongst the following would be:-

Which of the following are fat soluble vitamins:
(A) vit A
(B) vit B
(C) vit D
(D) vit E
(E) vit K
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The compounds producing Schottky defect, when added to crystals AgCl are-
NaCl
\(CdCl_2\)
\(CaCl_2\)
KCI
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[Co(NH₃)₄Cl(NO₂)]Cl will show:
A. Solvate isomerism
B. Linkage isomerism
C. Coordination isomerism
D. Ionisation isomerism
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Monochlorination of toulene in sunlight followed by hydrolysis with aq NaOH yields.