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 :

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 :

Order and molecularity in the given reaction is
CHCl₃ + Cl₂ → CCl₄ + HCl
Rate = \(k[CHCl^3][Cl_2]^{\frac{1}{2}}\)

Zinc metal reacts with dilute nitric acid to liberate gas :

Electronic configuration of d⁶ when Δ_a < P

Arrange the following in increasing order of their basic strength :
A. NH₃
B. AsNH₃
C. PH₃
D. BiH₃
E. SbH₃
Choose the correct answer from the options given below :

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 :

Co-ordination compounds present in following biological systems :
A. Chlorophyll
B. Haemoglobin
C. Vitamin B₁₂
D. Enzymes
E. Roots
Choose the correct answer from the options given below :

[Co(NH₃)₄Cl(NO₂)]Cl will show:
A. Solvate isomerism
B. Linkage isomerism
C. Coordination isomerism
D. Ionisation isomerism
Choose the correct answer from the options given below :

Cyclopropanol
Identify D

Arrange the following in increasing order of their boiling points :
A. CH₃CH₂CH₂CHO
B. CH₃CH₂CH₂CH₂OH
C. C₂H₅OC₂H₅
D. CH₃CH₂CH₂CH₂CH₃
E. CH₃CH₂CH₂COOH
Choose the correct answer from the options given below :

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

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)

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

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

Predict the major product in the following reaction:

Acid Rain is caused due to _________.

Silicon doped with electron elements of group-13 forms.

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

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:

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 :

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 :

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 :