$${\mathrm{H}}_2{\mathrm{O}}_2$$ acts as a reducing agent in :

Which of the given compounds can enhance the efficiency of hydrogen storage tank?

Match List I with List II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-c3ow{border-color:inherit;text-align:center;vertical-align:top} .tg .tg-7btt{border-color:inherit;font-weight:bold;text-align:center;vertical-align:top} .tg .tg-0pky{border-color:inherit;text-align:left;vertical-align:top} List I List II A. Cobalt catalyst I. $$({\mathrm{H}}_2+\mathrm{C}{\mathrm{l}}_2)$$ production B. Syngas II. Water gas production C. Nickel catalyst III. Coal gasification D. Brine solution IV. Methanol production Choose the correct answer from the options given below :

In which of the following reactions the hydrogen peroxide acts as a reducing agent?

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Isotopes of hydrogen have almost same chemical properties, but difference in their rates of reaction. Reason R : Isotopes of hydrogen have different enthalpy of bond dissociation. In the light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements : Statement I : Permutit process is more efficient compared to the synthetic resin method for the softening of water. Statement II : Synthetic resin method results in the formation of soluble sodium salts. In the light of the above statements, choose the most appropriate answer from the options given below:

Match List I with List II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-c3ow{border-color:inherit;text-align:center;vertical-align:top} .tg .tg-7btt{border-color:inherit;font-weight:bold;text-align:center;vertical-align:top} .tg .tg-0pky{border-color:inherit;text-align:left;vertical-align:top} LIST I Type of Hydride LIST II Example A. Electron deficient hydride I. $$\mathrm{Mg}{\mathrm{H}}_2$$ B. Electron rich hydride II. $$\mathrm{HF}$$ C. Electron precise hydride III. $${\mathrm{B}}_2{\mathrm{H}}_6$$ D. Saline hydride IV. $$\mathrm{C}{\mathrm{H}}_4$$ Choose the correct answer from the options given below:

Which hydride among the following is less stable?

Given below are two statements: Statement-I : Methane and steam passed over a heated $$\mathrm{Ni}$$ catalyst produces hydrogen gas. Statement-II : Sodium nitrite reacts with $${\mathrm{NH}}_4\mathrm{Cl}$$ to give $${\mathrm{H}}_2\mathrm{O},{\mathrm{N}}_2$$ and $$\mathrm{NaCl}$$. In the light of the above statements, choose the most appropriate answer from the options given below :

Given below are two statements: one is labelled as Assertion $$\mathbf{A}$$ and the other is labelled as Reason $$\mathbf{R}$$ Assertion A : Physical properties of isotopes of hydrogen are different. Reason R : Mass difference between isotopes of hydrogen is very large. In the light of the above statements, choose the correct answer from the options given below:

Given below are two reactions, involved in the commercial production of dihydrogen (H$${}_2$$). The two reactions are carried out at temperature "T$${}_1$$" and "T$${}_2$$", respectively $$C(s)+H_{2}O(g)\text{buildrel}{T}_1\frac{⟶}{C}O(g)+H_2(g)$$ $$CO(g)+H_{2}O(g)\underset{Catalyst}{\overset{T_2}{⟶}}C{O}_2(g)+H_2(g)$$ The temperatures T$${}_1$$ and T$${}_2$$ are correctly related as :

Which of the following can reduce decomposition of $${\mathrm{H}}_2{\mathrm{O}}_2$$ on exposure to light :

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Loss of electron from hydrogen atom results in nucleus of $$\sim 1.5\times 10^{-3}\mathrm{pm}$$ size. Reason R : Proton $$\left({\mathrm{H}}^{+}\right)$$ always exists in combined form. In the light of the above statements, choose the most appropriate answer from the options given below:

Which of the following represents the lattice structure of $${\mathrm{A}}_{0.95}\mathrm{O}$$ containing $${\mathrm{A}}^{2+},{\mathrm{A}}^{3+}$$ and $${\mathrm{O}}^{2-}$$ ions?

A cubic solid is made up of two elements X and Y. Atoms of X are present on every alternate corner and one at the center of cube. Y is at $${\frac{1}{3}}^{\mathrm{rd}}$$ of the total faces. The empirical formula of the compound is :

Which of the following expressions is correct in case of a $\mathrm{CsCl}$ unit cell (edge length 'a')?

The correct relationships between unit cell edge length '$$a$$' and radius of sphere '$$r$$' for face-centred and body-centred cubic structures respectively are :

A compound is formed by two elements $$\mathrm{X}$$ and $$\mathrm{Y}$$. The element $$\mathrm{Y}$$ forms cubic close packed arrangement and those of element $$\mathrm{X}$$ occupy one third of the tetrahedral voids. What is the formula of the compound?

In the following halogenated organic compounds, the one with the maximum number of chlorine atoms in its structure is :

The correct order of melting points of dichlorobenzenes is