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-baqh{text-align:center;vertical-align:top} .tg .tg-amwm{font-weight:bold;text-align:center;vertical-align:top} .tg .tg-0lax{text-align:left;vertical-align:top} LIST I LIST II A. Weak intermolecular forces of attraction I. Hexamethylenediamine + adipic acid B. Hydrogen bonding II. $$\mathrm{AlE}{\mathrm{t}}_3+\mathrm{TiC}{\mathrm{l}}_4$$ C. Heavily branched polymer III. 2 - chloro - 1, 3 - butadiene D. High density polymer IV. Phenol + formaldehyde Choose the correct answer from the options given below:

Match the following .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-baqh{text-align:center;vertical-align:top} .tg .tg-amwm{font-weight:bold;text-align:center;vertical-align:top} .tg .tg-0lax{text-align:left;vertical-align:top} Column A Column B (a) Nylon 6 (I) Natural Rubber (b) Vulcanized Rubber (II) Cross Linked (c) cis-1, 4-polyisoprene (III) Caprolactam (d) Polychloroprene (IV) Neoprene Choose the correct answer from 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 (Examples) LIST II (Type) A. 2-chloro-1,3- butadiene I. Biodegradable polymer B. Nylon 2-nylon 6 II. Synthetic Rubber C. Polyacrylonitrile III. Polyester D. Dacron IV. Addition Polymer Choose the correct answer from the options given below:

Given below are two statements : Statement I : Ethene at 333 to $$343\mathrm{K}$$ and $$6$$-$$7$$ atm pressure in the presence of $${\mathrm{AlEt}}_3$$ and $${\mathrm{TiCl}}_4$$ undergoes addition polymerization to give LDP. Statement II : Caprolactam at $$533$$-$$543\mathrm{K}$$ in $${\mathrm{H}}_2\mathrm{O}$$ through step growth polymerizes to give Nylon 6. In the light of the above statements, choose the correct answer from the options given below:

The polymer $$\mathrm{X}$$ - consists of linear molecules and is closely packed. It is prepared in the presence of triethylaluminium and titanium tetrachloride under low pressure. The polymer $$\mathrm{X}$$ is-

Buna-S can be represented as:

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-baqh{text-align:center;vertical-align:top} .tg .tg-amwm{font-weight:bold;text-align:center;vertical-align:top} .tg .tg-0lax{text-align:left;vertical-align:top} List I Polymer List II Type/Class (A) Nylon-2-Nylon-6 (I) Thermosetting polymer (B) Buna-N (II) Biodegradable polymer (C) Urea-formaldehyde resin (III) Synthetic rubber (D) Dacron (IV) Polyester Choose the correct answer from the options given below:

Polymer used in orlon is :

Which element is not present in Nessler's reagent?

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : $$\mathrm{C}{\mathrm{u}}^{2+}$$ in water is more stable than $$\mathrm{C}{\mathrm{u}}^{+}$$. Reason (R) : Enthalpy of hydration for $$\mathrm{C}{\mathrm{u}}^{2+}$$ is much less than that of $$\mathrm{C}{\mathrm{u}}^{+}$$. In the light of the above statements, choose the correct answer from the options given below :

Highest oxidation state of Mn is exhibited in $$\mathrm{M}{\mathrm{n}}_2{\mathrm{O}}_7$$. The correct statements about $$\mathrm{M}{\mathrm{n}}_2{\mathrm{O}}_7$$ are (A) Mn is tetrahedrally surrounded by oxygen atoms. (B) Mn is octahedrally surrounded by oxygen atoms. (C) Contains Mn-O-Mn bridge. (D) Contains Mn-Mn bond. Choose the correct answer from the options given below :

When $${\mathrm{Cu}}^{2+}$$ ion is treated with $$\mathrm{KI}$$, a white precipitate, $$\mathrm{X}$$ appears in solution. The solution is titrated with sodium thiosulphate, the compound $$\mathrm{Y}$$ is formed. $$\mathrm{X}$$ and $$\mathrm{Y}$$ respectively are :

$$\mathrm{N}{\mathrm{d}}^{2+}$$ = __________

The correct order of basicity of oxides of vanadium is :

Formulae for Nessler's reagent is :

${\mathrm{KMnO}}_4$ oxidises ${\mathrm{I}}^{-}$ in acidic and neutral/faintly alkaline solutions, respectively, to :

During the qualitative analysis of $${\mathrm{SO}}_3^{2-}$$ using dilute $${\mathrm{H}}_2{\mathrm{SO}}_4,{\mathrm{SO}}_2$$ gas is evolved which turns $${\mathrm{K}}_2{\mathrm{Cr}}_2{\mathrm{O}}_7$$ solution (acidified with dilute $${\mathrm{H}}_2{\mathrm{SO}}_4$$) :

Given below are two statements : Statement I : Nickel is being used as the catalyst for producing syn gas and edible fats. Statement II : Silicon forms both electron rich and electron deficient hydrides. In the light of the above statements, choose the most appropriate answer from the options given below :

The set of correct statements is : (i) Manganese exhibits +7 oxidation state in its oxide. (ii) Ruthenium and Osmium exhibit +8 oxidation in their oxides. (iii) Sc shows +4 oxidation state which is oxidizing in nature. (iv) Cr shows oxidising nature in +6 oxidation state.

An indicator 'X' is used for studying the effect of variation in concentration of iodide on the rate of reaction of iodide ion with $${\mathrm{H}}_2{\mathrm{O}}_2$$ at room temp. The indicator 'X' forms blue coloured complex with compound 'A' present in the solution. The indicator 'X' and compound 'A' respectively are :