One gas bleaches the coloured matter by reduction temporary while the other one by oxidation
permanently. The gases are respectively:

(1) $S{O}_2<mspace\; width="1em"></mspace>and<mspace\; width="1em"></mspace>C{l}_2<mspace\; width="1em"></mspace>$                             

(2) $O_3<mspace\; width="1em"></mspace>and<mspace\; width="1em"></mspace>C{l}_2$

(3) $H_{2}S<mspace\; width="1em"></mspace>and<mspace\; width="1em"></mspace>C{O}_2$                             

(4) $C{l}_2<mspace\; width="1em"></mspace>and<mspace\; width="1em"></mspace>S{O}_2$

एक गैस अस्थायी रूप से अपचयन द्वारा रंगीन पदार्थ को जबकि दूसरी ऑक्सीकरण द्वारा स्थायी रूप से विरंजित करती है। गैसें क्रमशः हैं:

(A) $S{O}_2<mspace\; width="1em"></mspace>\text{और}<mspace\; width="1em"></mspace>C{l}_2<mspace\; width="1em"></mspace>$    (b) $O_3<mspace\; width="1em"></mspace>\text{और}<mspace\; width="1em"></mspace>C{l}_2$

(C) $H_{2}S\text{\hspace{0.17em}और\hspace{0.17em}}C{O}_2$   (d) $C{l}_2<mspace\; width="1em"></mspace>\text{और}<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>S{O}_2$

The incorrect order is :

$\left(\mathrm{a}\right)<mspace\; width="1em"></mspace>\mathrm{HF}<\mathrm{HCl}<\mathrm{HBr}<\mathrm{Hl}<mspace\; width="1em"></mspace>\mathbf{:}\mathbf{\hspace{0.17em}}\mathrm{Acidic}<mspace\; width="1em"></mspace>\mathrm{strength}$
$\left(\mathrm{b}\right)<mspace\; width="1em"></mspace>\mathrm{HF}>\mathrm{HCl}>\mathrm{HBr}>\mathrm{Hl}<mspace\; width="1em"></mspace>\mathbf{:}\mathbf{\hspace{0.17em}}\mathrm{Thermal}<mspace\; width="1em"></mspace>\mathrm{stability}$
$\left(\mathrm{c}\right)<mspace\; width="1em"></mspace>\mathrm{HF}>\mathrm{HCl}>\mathrm{HBr}>\mathrm{Hl}<mspace\; width="1em"></mspace>\mathbf{:}\mathbf{\hspace{0.17em}}\mathrm{Boiling}<mspace\; width="1em"></mspace>\mathrm{point}<mspace\; width="1em"></mspace>$
$\left(\mathrm{d}\right)<mspace\; width="1em"></mspace>\mathrm{HF}>\mathrm{HCl}>\mathrm{HBr}>\mathrm{Hl}<mspace\; width="1em"></mspace>\mathbf{:}\mathbf{\hspace{0.17em}}\mathrm{Bond}<mspace\; width="1em"></mspace>\mathrm{dissociation}<mspace\; width="1em"></mspace>\mathrm{enthalpy}$

गलत क्रम है:

$\left(\mathrm{a}\right)<mspace\; width="1em"></mspace>\mathrm{HF}<\mathrm{HCl}<\mathrm{HBr}<\mathrm{Hl}<mspace\; width="1em"></mspace>\mathbf{:}\text{अम्लीय\hspace{0.17em}सामर्थ्य\hspace{0.17em}}$
$\left(\mathrm{b}\right)<mspace\; width="1em"></mspace>\mathrm{HF}>\mathrm{HCl}>\mathrm{HBr}>\mathrm{Hl}<mspace\; width="1em"></mspace>\mathbf{:}\text{ऊष्मीय\hspace{0.17em}स्थायित्व\hspace{0.17em}}$
$\left(\mathrm{c}\right)<mspace\; width="1em"></mspace>\mathrm{HF}>\mathrm{HCl}>\mathrm{HBr}>\mathrm{Hl}<mspace\; width="1em"></mspace>\mathbf{:}\mathbf{\hspace{0.17em}}\text{क्वथनांक\hspace{0.17em}}<mspace\; width="1em"></mspace>$
$\left(\mathrm{d}\right)<mspace\; width="1em"></mspace>\mathrm{HF}>\mathrm{HCl}>\mathrm{HBr}>\mathrm{Hl}<mspace\; width="1em"></mspace>\mathbf{:}\mathbf{\hspace{0.17em}}\text{बंध\hspace{0.17em}वियोजन\hspace{0.17em}एन्थैल्पी\hspace{0.17em}}$

Strength of halogen acids, HF,HCl,HBr and HI varies in the order

(1) HF>HCl>HBr>HI

(2)HF>HBr>HI>HCl

(3) HBr>HI>HCl>HF

(4) HI>HBr>HCl>HF

हैलोजन अम्लों, HF,HCl,HBr और HI की सामर्थ्य किस क्रम में परिवर्तित होती है

(A) HF>HCl>HBr>HI

(B)HF>HBr>HI>HCl

(C) HBr>HI>HCl>HF

(D) HI>HBr>HCl>HF

Correct order of bond angle in given species is :

$\left(\mathrm{a}\right)<mspace\; width="1em"></mspace>{\mathrm{SiO}}_4^{4-}>{\mathrm{PCl}}_3>{\mathrm{NCl}}_3>{\mathrm{SbH}}_3>{\mathrm{H}}_2\mathrm{Te}$

$\left(\mathrm{b}\right)<mspace\; width="1em"></mspace>{\mathrm{SiO}}_4^{4-}>{\mathrm{NCl}}_3>{\mathrm{PCl}}_3>{\mathrm{SbH}}_3>{\mathrm{H}}_2\mathrm{Te}$

$\left(\mathrm{c}\right)<mspace\; width="1em"></mspace>{\mathrm{SiO}}_4^{4-}>{\mathrm{H}}_2\mathrm{Te}>{\mathrm{SbH}}_3>{\mathrm{PCl}}_3>{\mathrm{NCl}}_3$

$\left(\mathrm{d}\right)<mspace\; width="1em"></mspace>{\mathrm{NCl}}_3>{\mathrm{PCl}}_3><mspace\; width="1em"></mspace>{\mathrm{SiO}}_4^{4-}>{\mathrm{SbH}}_3>{\mathrm{H}}_2\mathrm{Te}$

दिए गए स्पीशीज में बंध कोण का सही क्रम है:

$\left(\mathrm{a}\right)<mspace\; width="1em"></mspace>{\mathrm{SiO}}_4^{4-}>{\mathrm{PCl}}_3>{\mathrm{NCl}}_3>{\mathrm{SbH}}_3>{\mathrm{H}}_2\mathrm{Te}$

$\left(\mathrm{b}\right)<mspace\; width="1em"></mspace>{\mathrm{SiO}}_4^{4-}>{\mathrm{NCl}}_3>{\mathrm{PCl}}_3>{\mathrm{SbH}}_3>{\mathrm{H}}_2\mathrm{Te}$

$\left(\mathrm{c}\right)<mspace\; width="1em"></mspace>{\mathrm{SiO}}_4^{4-}>{\mathrm{H}}_2\mathrm{Te}>{\mathrm{SbH}}_3>{\mathrm{PCl}}_3>{\mathrm{NCl}}_3$

$\left(\mathrm{d}\right)<mspace\; width="1em"></mspace>{\mathrm{NCl}}_3>{\mathrm{PCl}}_3><mspace\; width="1em"></mspace>{\mathrm{SiO}}_4^{4-}>{\mathrm{SbH}}_3>{\mathrm{H}}_2\mathrm{Te}$

The correct statement regarding ${\mathrm{CIO}}_n^{‐}$ molecular ion is :

(1) On decreasing value of $\text{'}\mathrm{n}\text{'},<mspace\; width="1em"></mspace>\text{'}\mathrm{Cl}—\mathrm{O}\text{'}$ bond order increases 

(2) On the increasing value of $\text{'}\mathrm{n}\text{'},<mspace\; width="1em"></mspace>\text{'}\mathrm{Cl}—\mathrm{O}\text{'}$ bond length increases

(3) On the increasing value of $\mathrm{n},$ oxidation number of central atom increases 

(4) On the increasing value of  $\mathrm{n},$ hybrid orbitals on the central atom increase

${\mathrm{CIO}}_n^{‐}$आण्विक आयन के के बारे में सही कथन है:

(a) 'n' का मान घटने पर, $\text{'}\mathrm{Cl}—\mathrm{O}\text{'}$ बंध कोटि बढ़ती है

(b) 'n' का मान बढ़ने पर, $\text{'}\mathrm{Cl}—\mathrm{O}\text{'}$ बंध लंबाई बढ़ती है

(c) 'n' का मान बढ़ने पर, केंद्रीय परमाणु की ऑक्सीकरण संख्या बढ़ती है

(d) 'n' का मान बढ़ने पर, केंद्रीय परमाणु पर संकर कक्षके बढ़ती हैं

The incorrect statement regarding ${15}^{\mathrm{th}}$ group hydrides $\left({\mathrm{EH}}_3\right)$. $\left[\mathrm{E}=\mathrm{N},<mspace\; width="1em"></mspace>\mathrm{P},<mspace\; width="1em"></mspace>\mathrm{As},<mspace\; width="1em"></mspace>\mathrm{Sb},<mspace\; width="1em"></mspace>\mathrm{Bi}\right]$

(1) ${\mathrm{NH}}_3>{\mathrm{PH}}_3>{\mathrm{AsH}}_3>{\mathrm{SbH}}_3>{\mathrm{BiH}}_3<mspace\; width="1em"></mspace>:$ Thermal stability

(2) $\mathrm{N}-\mathrm{H}>\mathrm{P}-\mathrm{H}>\mathrm{As}-\mathrm{H}>\mathrm{Sb}-\mathrm{H}>\mathrm{Bi}-\mathrm{H}<mspace\; width="1em"></mspace>:<mspace\; width="1em"></mspace>\mathrm{E}-\mathrm{H}$ bond dissociation enthalpy

(3) ${\mathrm{NH}}_3>{\mathrm{PH}}_3>{\mathrm{AsH}}_3>{\mathrm{SbH}}_3>{\mathrm{BiH}}_3<mspace\; width="1em"></mspace>:$ Reducing character

(4) ${\mathrm{NH}}_3>{\mathrm{PH}}_3>{\mathrm{AsH}}_3>{\mathrm{SbH}}_3>{\mathrm{BiH}}_3<mspace\; width="1em"></mspace>:$ Basicity

${15}^{\text{वें\hspace{0.17em}}}$ वर्ग के हाइड्राइड $\left({\mathrm{EH}}_3\right)$ के संबंध में गलत कथन है, जहाँ $\left[\mathrm{E}=\mathrm{N},<mspace\; width="1em"></mspace>\mathrm{P},<mspace\; width="1em"></mspace>\mathrm{As},<mspace\; width="1em"></mspace>\mathrm{Sb},<mspace\; width="1em"></mspace>\mathrm{Bi}\right]$ है:

(a) ${\mathrm{NH}}_3>{\mathrm{PH}}_3>{\mathrm{AsH}}_3>{\mathrm{SbH}}_3>{\mathrm{BiH}}_3<mspace\; width="1em"></mspace>:$ऊष्मीय स्थायित्त्व 

(b) $\mathrm{N}-\mathrm{H}>\mathrm{P}-\mathrm{H}>\mathrm{As}-\mathrm{H}>\mathrm{Sb}-\mathrm{H}>\mathrm{Bi}-\mathrm{H}<mspace\; width="1em"></mspace>:<mspace\; width="1em"></mspace>\mathrm{E}-\mathrm{H}$ बंध वियोजन ऊर्जा 

(c) ${\mathrm{NH}}_3>{\mathrm{PH}}_3>{\mathrm{AsH}}_3>{\mathrm{SbH}}_3>{\mathrm{BiH}}_3<mspace\; width="1em"></mspace>:$अपचायक लक्षण 

(d) ${\mathrm{NH}}_3>{\mathrm{PH}}_3>{\mathrm{AsH}}_3>{\mathrm{SbH}}_3>{\mathrm{BiH}}_3<mspace\; width="1em"></mspace>:$क्षारकता

One of the products of the following reaction $KCNO+{\left(NH\right)}_{4}S{O}_4$ is :

(A) $N{H}_{4}N{O}_2$                              (B) $N{H}_{4}N{O}_3$

(C) $N{H}_2-CO-N{H}_2$                  (D) $N_2$ and $N{O}_2$ both

निम्नलिखित अभिक्रिया $KCNO+{\left(NH\right)}_{4}S{O}_4$ के उत्पादों में से एक है:

(A) $N{H}_{4}N{O}_2$               (B) $N{H}_{4}N{O}_3$

(C) $N{H}_2-CO-N{H}_2$    (D) $N_2$ और $N{O}_2$दोनों 

$N{H}_{4}Cl{O}_4+HN{O}_3\left(dilute\right)\to HCl{O}_4+\left[X\right]$

$\left[X\right]\stackrel{∆}{\to }Y\left(g\right)$

$\left[X\right]$ and $\left[Y\right]$ are respectively.

(a) $N{H}_{4}N{O}_3<mspace\; width="1em"></mspace>and<mspace\; width="1em"></mspace>N_{2}O$       (c) $N{H}_{4}N{O}_2<mspace\; width="1em"></mspace>and<mspace\; width="1em"></mspace>N_2$

(b) $HN{O}_4<mspace\; width="1em"></mspace>and<mspace\; width="1em"></mspace>O_2$                (d) None

$N{H}_{4}Cl{O}_4+HN{O}_3\left(\text{तनु}\right)\to HCl{O}_4+\left[X\right]$

$\left[X\right]\stackrel{∆}{\to }Y\left(g\right)$

$\left[X\right]$और $\left[Y\right]$ क्रमशः हैं।

(a) $N{H}_{4}N{O}_3<mspace\; width="1em"></mspace>\text{और}<mspace\; width="1em"></mspace>N_{2}O$    (c) $N{H}_{4}N{O}_2<mspace\; width="1em"></mspace>\text{और\hspace{0.17em}}<mspace\; width="1em"></mspace>N_2$

(b) $HN{O}_4<mspace\; width="1em"></mspace>\text{और}<mspace\; width="1em"></mspace>O_2$           (d) कोई नहीं

When 100 ml ozonised oxygen is passed through turpentine oil there was a reduction of volume by 20 ml. If 100 ml of such mixture is heated what will be the increase in volume.

(A) 10 ml

(B) 30 ml

(C) 40 ml

(D) 20 ml

जब 100 ml ओजोनीकृत ऑक्सीजन तारपीन के तेल के माध्यम से पारित किया जाता है, तो 20 ml की मात्रा में कमी आई थी। यदि इस तरह के मिश्रण को 100 ml गर्म किया जाता है तो आयतन में क्या वृद्धि होगी।

(A) 15 ml

(B) 25 ml

(C) 20 ml

(D) 30 ml

${\mathrm{XeF}}_2<mspace\; width="1em"></mspace>\mathrm{and}<mspace\; width="1em"></mspace>{\mathrm{XeF}}_6<mspace\; width="1em"></mspace>$ are separately hydrolysed then;

$\left(\mathrm{a}\right)<mspace\; width="1em"></mspace>\mathrm{both}<mspace\; width="1em"></mspace>\mathrm{give}<mspace\; width="1em"></mspace>\mathrm{out}<mspace\; width="1em"></mspace>{\mathrm{O}}_2$

$\left(\mathrm{b}\right)<mspace\; width="1em"></mspace>{\mathrm{XeF}}_6<mspace\; width="1em"></mspace>\mathrm{gives}<mspace\; width="1em"></mspace>{\mathrm{O}}_2<mspace\; width="1em"></mspace>\mathrm{and}<mspace\; width="1em"></mspace>{\mathrm{XeF}}_2<mspace\; width="1em"></mspace>\mathrm{does}<mspace\; width="1em"></mspace>\mathrm{not}$

$\left(\mathrm{c}\right)<mspace\; width="1em"></mspace>{\mathrm{XeF}}_2<mspace\; width="1em"></mspace>\mathrm{alone}<mspace\; width="1em"></mspace>\mathrm{gives}<mspace\; width="1em"></mspace>{\mathrm{O}}_2<mspace\; width="1em"></mspace>$

$\left(\mathrm{d}\right)<mspace\; width="1em"></mspace>\mathrm{Neither}<mspace\; width="1em"></mspace>\mathrm{of}<mspace\; width="1em"></mspace>\mathrm{them}<mspace\; width="1em"></mspace>\mathrm{gives}<mspace\; width="1em"></mspace>\mathrm{HF}$

${\mathrm{XeF}}_2<mspace\; width="1em"></mspace>\text{और}<mspace\; width="1em"></mspace>{\mathrm{XeF}}_6<mspace\; width="1em"></mspace>$को अलग से जलअपघटित किया जाता है तब;

$\left(\mathrm{a}\right)<mspace\; width="1em"></mspace>{\text{दोनों\hspace{0.17em}O}}_2<mspace\; width="1em"></mspace>\text{को\hspace{0.17em}देतें\hspace{0.17em}हैं\hspace{0.17em}}$

$\left(\mathrm{b}\right)<mspace\; width="1em"></mspace>{\mathrm{XeF}}_6,<mspace\; width="1em"></mspace>{\mathrm{O}}_2<mspace\; width="1em"></mspace>\text{देता\hspace{0.17em}है\hspace{0.17em}और\hspace{0.17em}}<mspace\; width="1em"></mspace>{\mathrm{XeF}}_2<mspace\; width="1em"></mspace>\text{नहीं\hspace{0.17em}देता\hspace{0.17em}है\hspace{0.17em}}$

$\left(\mathrm{c}\right)<mspace\; width="1em"></mspace>{\mathrm{XeF}}_2<mspace\; width="1em"></mspace>\text{अकेला}<mspace\; width="1em"></mspace>{\mathrm{O}}_2<mspace\; width="1em"></mspace>\text{देता\hspace{0.17em}है\hspace{0.17em}}$

$\left(\mathrm{d}\right)<mspace\; width="1em"></mspace>\text{उनमे\hspace{0.17em}से\hspace{0.17em}कोई\hspace{0.17em}\hspace{0.17em}HF\hspace{0.17em}नहीं\hspace{0.17em}देता\hspace{0.17em}है\hspace{0.17em}}$