“A” obtained by Ostwald’s method involving air oxidation of\( NH_3\), upon further air oxidation produces “B”. “B” on hydration forms an oxoacid of Nitrogen along with evolution of “A”. The oxoacid also produces “A” and gives positive brown ring test.
The major product ‘P’ for the following sequence of reactions is :
Match List I with List II.
Choose the correct answer from the options given below:
The correct order of hydration enthalpies is (A) K+ (B) Rb2+ (C) Mg2+ (D) Cs+ (E) Ca2+ Choose the correct answer from the options given below:
Match List I with List II
Identify the correct statements about alkali metals A. The order of standard reduction potential \(\left( M ^{+} \mid M \right)\)for alkali metal ions is \(Na > Rb > Li\)B. \(CsI\)is highly soluble in water.C. Lithium carbonate is highly stable to heat.D. Potassium dissolved in concentrated liquid ammonia is blue in colour and paramagnetic. E. All the alkali metal hydrides are ionic solids. Choose the correct answer from the options given below:
The number of s-electrons present in an ion with 55 protons in its unipositive state is
One mole of an ideal monoatomic gas is subjected to changes as shown in the graph The magnitude of the work done (by the system or on the system) is _______ J (nearest integer)Given : \(\log 2=0.3 \ln 10=2.3\)
If the pKa of lactic acid is 5, then the pH of 0.005 M calcium lactate solution at \(25^\circ \text{C}\) is \(\_\_\_\_\_\_ \times 10^{-1}\) (Nearest integer).Lactic Acid
Following figure shows spectrum of an ideal black body at four different temperatures The number of correct statement/s from the following is ________[A.] \(T_4 > T_3 > T_2 > T_1\)[B.] The black body consists of particles performing simple harmonic motion.[C.] The peak of the spectrum shifts to shorter wavelengths as temperature increases.[D.] \(\frac{T_1}{\nu_1} = \frac{T_2}{\nu_2} = \frac{T_3}{\nu_3} \neq \text{constant}.\)[E.] The given spectrum could be explained using quantization of energy.
The total pressure observed by mixing two liquids A and B is 350 , mm Hg when their mole fractions are 0.7 and 0.3 respectively The total pressure becomes 410 ,mm ,Hg if the mole fractions are changed to 0.2 and 0.8 respectively for A and B The vapour pressure of pure A is _________mm ,Hg (Nearest integer) Consider the liquids and solutions behave ideally.
Sum of \(\pi\)-bonds present in peroxodisulphuric acid and pyrosulphuric acid is___________
Maximum number of isomeric monochloro derivatives which can be obtained from 2,2,5,5-tetramethylhexane by chlorination is ________
Match List I with List II:
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason RAssertion A: Beryllium has less negative value of reduction potential compared to the other alkaline earth metalsReason R: Beryllium has large hydration energy due to small size of \(Be ^{2+}\) but relatively large value of atomization enthalpyIn the light of the above statements, choose the most appropriate answer from the options given below
