AIIMS Chemistry Class 11 Questions

The complete reaction is shown below.

Which has least covalent radius.

IUPAC name of

The complete reaction is shown below.

$\text{A} \xrightarrow{\text{Ph}-\text{SO}_2\text{Cl}} \text{B} \xrightarrow{\text{KOH}} \text{C} \xrightarrow{\text{C}_2\text{H}_5\text{I}} \text{D}$'C' is water solubleCorrect structure of A and D are

Stability order of following carbocation is :

Which is least soluble

Correct order of SN2 reaction is:

Find the end product of reaction

$$\text{Ph}-\text{CH}_2-\text{CH}=\text{CH}-\text{CH}_3 \xrightarrow[\text{(ii) Alk. KOH}]{\text{(i) Br}_2}$$

Assertion: Phenol is more acidic then m-methoxy phenol Reason: $\text{–OCH}_3$ shows +I effect

Compare stability of free radicals (I) $$\text{CH}_3-\dot{\text{C}}\text{H}-\text{CH}_3$$ (II) $$\text{C}_6\text{H}_5-\dot{\text{C}}\text{H}_2$$ (III)$$\dot{\text{C}}\text{H}_2-\text{CH}(\text{CH}_3)_2 \qquad \text{(IV) }\dot{\text{C}}\text{H}_2-\text{CH}_3$$

$\text{Phenol} + \text{Aniline} \xrightarrow{\text{C}_6\text{H}_5\text{N}_2^+\text{Cl}^- / \text{KOH}} \text{Major Product: Product will be :}$

Assertion: Propene reacts with HI in presence of peroxide give¹⁻iodopropane. Reason: 1° free radical is less stable than 2° free radical

$-\text{NH}-\text{C}(=\text{O})-\text{NH}-\text{NH}_2\text{ group}\rangle \xrightarrow{\text{(i)HCl} / \text{(ii)}\Delta} \text{Major product of following reaction}$

Write IUPAC name of following compound

$\langle\text{1-chloro-2-methoxybenzene structure}\rangle \xrightarrow{\text{HNO}_3 / \text{H}_2\text{SO}_4} \text{Major Product, product will be :}$

Correct order of basic strength is:

Identify structure of ‘P’ and ‘Q’ Correct order of pKa value is:

Which of the following is incorrect about cyanogen gas? (1) It has bent structure (2) It is psuedohalogen. (3) Its behavior is similar to halides. (4) both carbon are sp hybridised

Assertion: I₂O₅ is used to detect CO. Reason : In I₂O₅ the oxidation number of I is 5.

Which of the following statement is correct for oleum ?

IUPAC name of give compound:

Assertion: Anhydrides are more reactive than ester for nucleophilic substitution. Reason:– $\text{R.COO}^{-}$ is better leaving group than $\text{R-O}^{-}$

Suitable reagent for following conversion

How many spectral line of Balmer series present in visible region :

Assertion: m-Bromotoluene can be prepared by m-toluidene. Reason: Amino group is meta directing

The complete reaction is shown below.

C + O₂(g) ⟶ CO₂ ...... (i); ΔH = -393 kJ mol⁻¹ H₂ + 1/2 Ω₂ ⟶ H₂O ...... (ii); ΔH = -287.3 kJ mol⁻¹ 2CO₂ + 3H₂O ⟶ C₂H₅OH + 3O₂ ...... (iii); ΔH = 1366.8 kJ mol⁻¹ Find the standard enthalpy of formation of C₂H₅OH(l)

The complete reaction is shown below.

The complete reaction is shown below.

If HBr attacks on left side double bond of the conjugated diene, then the formation of tertiary carbocation occur which is highly stable and if HBr attacks on right side double bond, the formation of secondary carbocation occurs which is less stable.

The complete reaction is shown below. $$\text{CH}_3-\text{C}\equiv\text{CH} \xrightarrow{\quad2\text{HBr}\quad} \longrightarrow \xrightarrow{\quad\text{H}_2\text{O}\quad} \text{Product , Product is:}$$

Which of the following has highest ratio of reducing hydrogen / OH :

In isolated system, find the condition for spontaneous reaction:

1 mole of a diatomic is heated through isochoric process from 300 k to 500 K. The entropy is :

Assertion : $\text{BO}_3^{3-}$ and $\text{SO}_3^{2-}$ are not isostructural. Reason : In $\text{SO}_3^{2-}$, sulphur has one lone pair of electrons.

Which of the following number of lone pair at central atom zero $\text{XeO}_3$,$\text{XeO}_2\text{F}_2$, $\text{XeO}_4$, $\text{XeO}_3\text{F}_2$, $\text{Ba}_2\text{XeF}_4$

Assertion : Air that quickly leaks out of a balloon becomes cooler. Reason : The leaking air undergoes adiabatic expansion.

Formula of metal oxide with metal deficiency defect in its crystal is $\text{A}_{0.8}\text{O}$ . The crystal contains $\text{A}^{2+}$ and $\text{A}^{3+}$ ions. The fraction of metal existing as $\text{A}^{2+}$ ions in the crystal is -

$\text{H}_2\text{O}_2$ is obtained by which of the following:

In $\text{Fe(CO)}_5$, the $\text{Fe--C}$ bond possesses

In which of the following pair both the species have $sp^3$ hybridization?

Assertion : The name of the hydrocarbon $(\text{CH}_3)_2\text{CHCH}_2\text{CH}_2\text{CH}(\text{CH}_3)\text{CH}_2\text{CH}_3$ is 2,5-dimethylheptane and not 3,6-dimethylheptane. Reason : Numbering should be done in such a way that the sum of the locants on the parent chain is the biggest possible number.

The chemical reaction is shown below:

When 0.05 M dimethyl amine is dissolved in 0.1 M NaOH solution then the percentage dissociation of dimethyl amine is: (K_b (CH₃)₂NH = 5 x 10⁻⁴)

If n = 2 for $\text{He}^+$ ion than find out the wave length

Correct order of bond dissociation energy

Assertion: Ferromagnetic compound is more attracted in magnetic field. Reason: Because all electron are aligned in same direction.

Assertion : U is a state function. Reason : T is an intensive property.