CUET · CHEMISTRY · PYQ PAPER 2023
Which of the following statements are true ?
A. Noble gases have low M.P. or B.P. due to weak dispersion forces
B. All noble gases have completely filled \(ns^2np^6\) electronic configuration
C. \(XeF_2\) and \(XeF_6\) are colourless crystalline solid
D. \(XeO_3\) has pyramidal geometry
Choose the correct answer from the options given below :
- A (A), (C) only
- B (B), (C), (D) only
- C (A), (B), (C), (D) only
- D (A), (C), (D) only
Answer & Solution
Correct Answer
(D) (A), (C), (D) only
Step-by-step Solution
Detailed explanation
(A), (C), (D) only
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from CHEMISTRY
- Which of the following statements is(are) correct for amino acids?
(A) Amino acids behave like salts
(B) In aqueous solution they form zwitter ion.
(C) Most naturally occurring amino acids exist in D configuration
(D) Tyrosine is a non-essential amino acid
Choose the correct answer from the options given below:CUET 2025 Medium - Interstitial transition metal compounds
(A) have higher melting points than those of pure metals.
(B) have more reactivity than those of pure metals.
(C) are non-stoichiometric compounds.
(D) formed when small atoms like H, C or N are trapped inside the crystal lattice of the metals.
Choose the correct answer from the options given below:CUET 2025 Hard - The conductivity of electrolytic (ionic) solution depends on
(A). Nature of electrolyte added
(B). Nature of solvent
(C). Temperature
(D). Size of ions produced
Choose the correct answer from the options given below :CUET 2025 Medium - Select the correct statements for Hoffmann bromamide degradation reaction:
(A) Used to prepare primary amines
(B) Amides are treated with bromine in aqueous solution.
(C) NaOH is used in this reaction.
(D) HCI is used in this reaction
Choose the correct answer from the options given below:CUET 2025 Medium - Answer the question on basis of passage given below :
Adsorption is surface phenomenon and it differs from absorption which occurs throughout the body of the substance which absorbs. In physisorption the attractive forces are mainly van der Waal forces while in chemisorption actual bonding occurs between the particles of adsorbent and adsorbed more easily on the surface of a solid as compared to the gases which are liquified with difficulty. Adsorption increases with the increases in pressure and decreases as temperature is increased
The effect of pressure on adsorption is high ifCUET 2023 Easy - Elements of group-15, 16 and 17 form compounds with hydrogen with general formula MH3, \(H 2 M\) and HX (called hydrogen halides). Stability of these hydrides, along with M-H bond strength and basic nature decreases down the group. Boiling point of these hydrides mainly depends on the strength of their inter molecular forces.
Decreasing order of boiling point of group 15 hydrides is:
A. \(NH _3\)
B. \(PH _3\)
C. \(AsH _3\)
D. \(SbH _3\)
E. \(BiH _3\)
Choose the correct answer from the options given below:CUET 2023 Medium
More PYQs from CUET
- Which of the following component was not the part of S.L. Miller's experiment?CUET 2023 Easy
- Decreasing order of freezing point of 0.1 M aqueous solution of following will be :
(A) \(\text{K}_4\text{[Fe(CN)}_6\text{]}\)
(B) \(\text{K}_2\text{SO}_4\)
(C) \(\text{NH}_2\text{CONH}_2\)
(D) \(\text{AlCl}_3\)
(E) \(\text{HCl}\)
Choose the correct answer from the options given below :CUET 2023 Medium - The value/s of \(\lambda\) for which the given system of equations will have infinitely many solutions \(x+y-6 z=0 ; \lambda x-y+2 z=0 ;-3 x+\lambda y+2 z=0\), is/are:CUET 2023 Easy
- According to Rayleigh's law, the intensity of scattered light varies with wavelength \( \lambda \) asCUET 2025 Hard
- Answer the question on the basis of passage given below :
There are three kinds of amines which are primary, secondary and tertiary amines. These amines may have alkyl group or aryl group or both alkyl and aryl groups. These amines can be distinguished from one another by various chemical tests.
An amine A on treatment with \(\text{HNO}_2\) gives \(\text{N}_2\text{(g)}\) and an alcohol B. The molecular mass of alcohol B is 46.
The amine A is :CUET 2023 Medium - Match List-I with List-II
‘+’ sign for beneficial interaction, ‘-’ sign for detrimental interaction and ‘0’ for neutral interaction.List-I ( Signs of Interspecific Interactions (Between Species A and B)) List-II (Population Interactions) (A) +/- (I) Commensalism (B) +/+ (II) Parasitism (C) +/0 (III) Amensalism (D) -/0 (IV) Mutualism
Choose the correct answer from the options given below:CUET 2025 Hard