The number of \(\mathrm{S}=\mathrm{O}\) bonds present in sulphurous acid, peroxodisulphuric acid and pyrosulphuric acid, respectively are :

What is the correct order of the following elements with respect to their density ?

A volume of \(x mL\) of \(5 M NaHCO _3\) solution was mixed with 10 mL of \(2 M H _2 CO _3\) solution to make an electrolytic buffer. If the same buffer was used in the following electrochemical cell to record a cell potential of 235.3 mV , then the value of \(x =\)__________ mL (nearest integer).
\(Sn ( s )\left| Sn ( OH )_6^{2-}(0.5 M )\right| HSnO _2^{-}(0.05 M ) \mid OH ^{-} \left| Bi _2 O _3(s)\right| Bi ( s )\)
Consider upto one place of decimal for intermediate calculations
\(\left[\begin{array}{ll}\text { Given : } & E _{ HSnO _2^{-} \mid Sn ( OH )_6^{2-}}^{ o }=-0.9 V \\ & E _{ Bi _2 O _3 \mid Bi }^{ o }=-0.44 V \\ & pKa _{\left( H _2 CO _3\right)}=6.11 \\ & \frac{2.303 RT }{ F }=0.059 V \\ &\operatorname{Antilog}(1.29)=19.5\end{array}\right]\)

The correct statement about the magnetic properties of \([Fe(CN)_6]^{3-}\) and \([FeF_6]^{3-}\) is \((Z= 26)\)

Among \(\mathrm{VO}_2^{+}, \mathrm{MnO}_4^{-}\)and \(\mathrm{Cr}_2 \mathrm{O}_7^{2-}\), the spin-only magnetic moment value of the species with least oxidising ability is _______\(BM\) (Nearest integer). (Given atomic member \(\mathrm{V}=23, \mathrm{Mn}=25, \mathrm{Cr}=24\) )

Given below are two statements:
Statement I : will undergo alkaline hydrolysis at a faster rate than
Statement II : substitution takes place first by involving lone pair of electrons on nitrogen.
involving lone pair of electrons on nitrogen.
In the light of the above statements, choose the most appropriate answer from the options given below

\(\dot{ Cl }+ CH _{4} \rightarrow A + B\) \(A\) and \(B\) in the above atmospheric reaction step are.

A ray of light coming from the point \((2,2 \sqrt{3})\) is incident at an angle \(30^{\circ}\) on the line \(x=1\) at the point \(A\). The ray gets reflected on the line \(x =1\) and meets \(x\) -axis at the point \(B\). Then, the line \(AB\) passes through the point

Sodium metal on dissolution in liquid ammonia gives a deep blue solution due to the formation of:

Number of compounds from the following which will not produce orange red precipitate with Benedict solution is \(..............\).  Glucose, maltose, sucrose, ribose,\(2-\)deoxyribose, amylose, lactose.

The horizontal component of earth's magnetic field at a place is \(3.5 \times 10^{-5} \mathrm{~T}\). A very long straight conductor carrying current of \(\sqrt{2} A\) in the direction from South east to North West is placed. The force per unit length experienced by the conductor is _______ \(\times 10^{-6} \mathrm{~N} / \mathrm{m}\).

A particle initially at rest starts moving from reference point. \(\mathrm{x}=0\) along \(\mathrm{x}\)-axis, with velocity \(v\) that varies as \(v=4 \sqrt{\mathrm{x} m} / \mathrm{s}\). The acceleration of the particle is _______ \( \mathrm{ms}^{-2}\).

Region \(I\) and \(II\) are separated by a spherical surface of radius \(25\, {cm}\). An object is kept in region \(I\) at a distance of \(40\, {cm}\) from the surface. The distance of the image from the surface is \(.....\,cm\)