List of top Chemistry Questions asked in CUET (UG)

Match List I with List II

List I		List II
A.	CH3CH2NH2	I.	N,N-Dimethylamiline
B.		II.	Ethylamine
C.	C6H5NH2	III.	Aniline
D.	C6H5N(CH3)2	IV.	Trimethylamine

Choose the correct answer from the options given below :

KMnO₄ + H₂SO₄ + X → MnSO₄ + K₂SO₄ + H₂O + CO₂
Identify X :

Aniline forms meta nitro derivative in strongly acidic medium. The reason is-

In order to differentiate between N-methylmethanamine and N,N-Dimethylmethanamine, the reaction to be used is :

When air was passed through glass bulb containing 16 g of an organic compound in 100 g of water and then through glass bulb containing only water at the same temperature and then finally through anhydrous CCl₄ glasstube, the loss in mass of glass bulb containing water was 0.052 g and the gain in mass of CCl₄ tube was 1.86 g. Calculate the molecular mass of the organic substance.

Arrange the following oxoacids of phosphorus in the correct decreasing order of their reducing strength.
A. H₄P₂O6
B. H₃PO₂
C. H₄P₂O₇
D. H₃PO₃
Choose the correct answer from the options given below :

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) + \(\frac{1}{2}O_2(g)+2e^-\)
Choose the correct answer from the options given below :

Rate of a reaction is of 2nd order w.r.t A and Ist order w.r.t B. If concentration of A is halved and concentration of B becomes \(\frac{1}{3}^{rd}\) of initial concentration. The rate of reaction becomes :

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

Phenol is brominated in solvent CS, at low temperature. The product formed are:

Silicon doped with electron elements of group-13 forms.

Which of the following compound will not undergo Azo coupling reaction?

Scrubber technology used in automobile to remove mainly which harmful gas from the exhaust with the help of water spray or lime :

Acid Rain is caused due to _________.

When phenol is treated with chloroform in the presence of Sodium hyrdroxide, product formed will be :

Number of electrons exchanged during the following reaction are/is
2Fe³⁺(aq) + 2I^-(aq) → 2Fe²⁺(aq) + I₂(s)

The correct increasing order of basic strength of amine is:
(A) \(CH_5NH_2<NH_3 <CHCH_2NH_2 < C_2H_5NH_2 < (CH)_2NH \)
(B) \(NH_3 <C_6H_5NH_2 < CHCH_2NH_2 < C_2H_5NH_2 < (C_2H_5)_2NH \)
(C) \(C_6H_5CH_2NH_2 <C_6H_5NH_2 < NH_3 <C_2H_5NH_2 < (C_2H_5)_2NH \)
(D) \(C_2H_5NH_2 < (C_2H_5)_2NH < C_6H_5NH_2 < NH_3\)
Choose the correct answer from the options given below:

2g of benzoic acid (C₆H₅COOH) dissolved in 25g of benzene lowers its freezing point by 1.62 K. Molal depression constant is 4.9 K kg/mol. The value of ‘i’ when benzoic acid dimersises would be :

Out of 18g of glucose only 4.5 g is dissolved in water to obtain 40 mL of its aqueous solution. Find the molarity of this glucose solution

Amongst the following ions which one has the highest magnetic moment value?

Match List I with List II

List-I		List-II
(A)	Cyanocobalamine	(I)	Hydrogenation of Alkenes
(B)	Wilkinson catalyst	(II)	Antipernicious anemia factor
(C)	D-penicillamine	(III)	Refining of Ni
(D)	Mond's Process	(IV)	Treatment of toxic effects of copper

Choose the correct answer from the options given below:

The IUPAC name of

The correct IUPAC name of tert-butyl benzyl ether is-

Lactose on hydrolysis give:

A and B, respectively from the following options are: