AIPMT Mains Chemistry Class 11 Questions
70 questions
Given that the equilibrium constant for the reaction 2SO₂(g) + O₂(g) ⇌ 2SO₃(g) has a value of 278 at a particular temperature. What is the value of the equilibrium constant for the following reaction at the same temperature?
SO₃(g) ⇌ SO₂(g) + 1/2 Ω₂(g)
The orbital angular momentum of a p-electron is given as:
Which of the following reagents will be able to distinguish between¹⁻butyne and²⁻butyne?
Out of the following which one is not a possible energy for a photon to be emitted by hydrogen atom according to Bohr's atomic model?
Which of the following statements is incorrect?
(1) Aluminium reacts with excess NaOH to give Al(OH)₃
(2) NaHCO₃ on heating gives Na₂CO₃
(3) Pure sodium metal dissolves in liquid ammonia to give blue solution
(4) NaOH reacts with glass to give sodium silicate
Which of the statements about "Denaturation" given below are correct?
Statements :
(a) Denaturation of proteins causes loss of secondary and tertiary structures of the protein
(b) Denaturation leads to the conversion of double strand of DNA into single strand
(c) Denaturation affects primary structure which gets distorted
The IUPAC name of the following compound is
Which of the following oxide is amphoteric?
Which of the following compounds undergoes nucleophilic substitution reaction most easily?
In qualitative analysis, the metals of group I can be separated from other ions by precipitating them as chloride salts. A solution initially contains Ag⁺ and Pb²⁺ at a concentration is 0.10 M. Aqueous HCl is added to this solution until the Cl⁻ concentration is 0.10 M. What will the concentration of Ag⁺ and Pb²⁺ be at equilibrium?
(Ksp for AgCl = 1.8 × 10⁻¹⁰, Ksp for PbCl₂ = 1.7 × 10⁻⁵)
Which of the following structures is the most preferred and hence of lowest energy for SO₃?
Which of the following compounds is most basic?
Which has the maximum number of molecules among the following?
Match the compounds given in List-I with List-II and select the suitable option using the code given below.
The order of reactivity of phenyl magnesium bromide (PhMgBr) with the following compounds:
CH₃C≡O, CH₃CH₂C≡O, PhC≡O
According to the Bohr Theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon?
Consider the reactions:
(i) (CH₃)₂CH−CH₂Br (CH₃)₂CH−CH₂OC₂H₅ + HBr
(ii) (CH₃)₂CH−CH₂Br (CH₃)₂CH−CH₂OC₂H₅ + Br⁻
The mechanisms of reactions (i) and (ii) are respectively
Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is
The reaction 2A(g) + B(g) ⇌ 3C(g) + D(g) is begun with the concentrations of A and B both at an initial value of 1.00 M. When equilibrium is reached, the concentration of D is measured and found to be 0.25 M. The value for the equilibrium constant for this reaction is given by the expression
Among the following which one has the highest cation to anion size ratio?
Which of the following species is not electrophilic in nature?
In which of the following molecules the central atom does not have sp³ hybridization?
The compound A on heating gives a colourless gas and a residue that is dissolved in water to obtain B. Excess of CO₂ is bubbled through aqueous solution of B, C is formed which is recovered in the solid form. Solid C on gentle heating gives back A. The compound is
Match the compounds given in List-I with their characteristic reactions given in List-II. Select the correct option.
The IUPAC name of the compound CH₃CH=CHC≡CH is
Some of the properties of the two species, NO₃⁻ and H₃O⁺ are described below. Which one of them is correct? (1) Dissimilar in hybridization for the central atom with different structures (2) Isostructural with same hybridization for the central atom (3) Isostructural with different hybridization for the central atom (4) Similar in hybridization for the central atom with different structures
In the case of alkali metals, the covalent character decreases in the order:
Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states?
The stability of +1 oxidation state increases in the sequence:
Amongst the elements with following electronic configurations, which one of them may have the highest ionization energy?
Maximum number of electrons in a subshell of an atom is determined by the following:
Benzene reacts with CH₃Cl in the presence of anhydrous AlCl₃ to form:
Which of the following is not permissible arrangement of electrons in an atom?
The dissociation constants for acetic acid and HCN at 25°C are 1.5 × 10⁻⁵ and 4.5 × 10⁻¹⁰ respectively. The equilibrium constant for the equilibrium CN⁻ + CH₃COOH ⇌ HCN + CH₃COO⁻ would be:
Propionic acid with Br₂/ P yields a dibromo product. Its structure would be:
Predict the product:
H₂COH . CH₂OH on heating with periodic acid gives:
According to MO theory which of the following lists ranks the nitrogen species in terms of increasing bond order?
Which of the following molecules acts as a Lewis acid?
The IUPAC name of the compound having the formula CH≡C⁻CH=CH₂ is:
Which of the following compounds will exhibit cis-trans (geometrical) isomerism?
The ionization constant of ammonium hydroxide is 1.77 × 10⁻⁵ at 298 K. Hydrolysis constant of ammonium chloride is:
Consider the following reaction: Phenol → Zn dust → CH₃Cl/Anhydrous AlCl₃ → Alkaline KMnO₄ → Z, the product Z is:
From the following bond energies: H – H bond energy: 431.37 kJ mol⁻¹ C = C bond energy: 606.10 kJ mol⁻¹ C – C bond energy: 336.49 kJ mol⁻¹ C – H bond energy: 410.50 kJ mol⁻¹ Enthalpy for the reaction, H₂C = CH₂ + H₂ → H₃C – CH₃ will be:
Among the following which is the strongest oxidising agent? 1) Br₂ 2) I₂ 3) Cl₂ 4) F₂
Nitrobenzene can be prepared from benzene by using a mixture of conc. HNO₃ and conc. H₂SO₄ in the mixture, nitric acid acts as a/an:
The ground state energy of hydrogen atom i.6 eV. When its electron is in the first excited state, its excitation energy is
Which of the following are not state functions?
(I) q + w
(II) q
(III) w
(IV) H-TS
Bond dissociation enthalpy of H₂, Cl₂ and HCl are 434, 242 and 431 kJmol⁻¹ respectively. Enthalpy of formation of HCl is
Equal volumes of three acid solutions of pH 3, 4 and 5 are mixed in a vessel. What will be the H⁺ ion concentration in the mixture?
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