The product(s) formed when \(\mathrm{H}_2 \mathrm{O}_2\) reacts with disodium hydrogen phosphate is

Statement (A) \(\mathrm{CO}_2\) has no dipole moment, whereas \(\mathrm{SO}_2\) and \(\mathrm{H}_2 \mathrm{O}\) have dipole moment. Statement (B) \(\mathrm{SnCl}_2\) is ionic, whereas \(\mathrm{SnCl}_4\) is covalent. Which of the following is correct?

At 298 K, the enthalpy change (in kJ ) for the reaction given below is
\(\mathrm{CH}_4(g)+\mathrm{O}_2(g) \rightarrow \mathrm{C}(s)+2 \mathrm{H}_2 \mathrm{O}(l)\)
(Given): \(\mathrm{H}_2(g)+\frac{1}{2} \mathrm{O}_2(g) \rightarrow \mathrm{H}_2 \mathrm{O}(l) ; \Delta H^{\ominus}=-286 \mathrm{~kJ}\)
\(\mathrm{C}(s)+\mathrm{O}_2(g) \rightarrow \mathrm{CO}_2(g) ; \Delta H^{\ominus}=-394 \mathrm{~kJ}\)
\(\mathrm{CH}_4(g)+2 \mathrm{O}_2(g) \rightarrow \mathrm{CO}_2(g)+2 \mathrm{H}_2 \mathrm{O}(l) ; \Delta H^{\ominus}=-890 \mathrm{~kJ}\)

Identify the correct set of \(\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}\) ion. (hybridisation of \(\mathrm{Co}^{3+}\), type of complex, number of unpaired electrons in the complex ion respectively)

Highest covalent character is found in which of the following?

At 61 K , one mole of an ideal gas of 1.0 L volume expands isothermally and reversibly to a final volume of 10.0 L . What is the work done in the expansion?

Which of the given atoms has the greatest electron affinity?

A transverse wave propagating on a stretched string of linear density \(3 \times 10^{-4} \mathrm{~kg} \mathrm{~m}^{-1}\) is represented by the equation \(y=0.2 \sin (15 x+60 t)\) where \(x\) is in metres and \(t\) is in seconds. The tension in the string (in newton) is

The roots of the equation \(x^3-3 x-2=0\) are

If \(m\) is the slope and \(P(8, \beta)\) is the midpoint of a chord of contact of the circle \(x^2+y^2=125\), then the number of values of \(\beta\) such that \(\beta\) and \(m\) are integers is

Statement (I) : The slope of kinetic energy-displacement curve of a body in motion will be directly proportional to its acceleration. Statement (II) : From a height of \(15 \mathrm{~m}\) a ball is projected vertically upwards with a velocity of \(30 \mathrm{~m} / \mathrm{s}\). If the ball rises to the same height after hitting the ground, the loss of its energy on hitting the ground is \(30 \%\). Statement (III) : The velocity acquired by a body of mass ' \(m\) ' after travelling a fixed distance from rest under the action of a constant force is directly proportional to mass ' \(\mathrm{m}\) '. Which of the following is correct?

Which one of the following represents the correct order of electronegativity?

\[ \lim _{x \rightarrow 0}\left(\frac{4 !}{x^8}\left(1-\cos \frac{x^2}{3}-\cos \frac{x^2}{4}+\cos \frac{x^2}{3} \cos \frac{x^2}{4}\right)\right)= \]