JEE Main entrance exam Question Bank Solutions

Given below are two statements:

Statement I: Both CaCl₂.6H₂O and MgCl₂.8H₂O undergo dehydration on heating.

Statement II: BeO is amphoteric whereas the oxides of other elements in the same group are acidic.

In the light of the above statements, choose the correct answer from the options given below:

The functions of antihistamines are ______.

The internal energy (in J) when 90 g of water undergoes complete evaporation at 100°C is ______.

(Given ΔH_vap for water at 373 K = 41 kJ/mol, R = 8.314 JK⁻¹ mol⁻¹)

Methyl amine on reaction with chloroform in the presence of NaOH gives ______.

The specific rate constant of the decomposition of N₂O₅ is 0.008 min⁻¹. The volume of O₂ collected after 20 minutes is 16 ml. The volume that would be collected at the end of the reaction is ______ mL. NO₂ formed is dissolved in CCl₄.

How many conformations does ethane have?

Which one of the following equations does not correctly represent the first law of thermodynamics for the given processes involving an ideal gas? (Assume non-expansion work is zero)

Which of the following amines can be prepared by Gabriel phthalimide reaction?

Which of the following compound is optically active?

An inorganic salt solution gives a yellow precipitate with silver nitrate. The precipitate dissolves in dilute nitric acid as well as in ammonium hydroxide. The solution contains _______.

The major product of the following reaction is:

Steps I and II are ______.

Which of the following statements is correct for CsBr₃?

In Finkelstein Reaction, which reactants are used?

\[\ce{BaC2 + N2 ->[\Delta] (1)}\]
\[\ce{CaC2 + N2 ->[\Delta] (2)}\] (1) and (2) are ______.

Consider the following carbocations:

1. 
   
2. 
   
3. 
   
4. \[\ce{CH3 - \overset{⊕}{CH2}}\]

The relative stabilities of these carbocations are such that:

\[\ce{C2H5Cl + AgF -> C2H5F + AgCl}\] The above reaction is called ______.

Ca, Ba and Sr ions are precipitated in fifth group as their ______.

Which compound would exhibit optical isomers?

The number of geometrical isomers of \[\ce{[Co(NH3)3 (NO3)3]}\] are ______.