Recent questions tagged class11

$2K_3Fe(CN)_6+2KOH\rightarrow x+y+z$,$H_2O_2+z\rightarrow y+w$.The $w$ is

asked Jan 24, 2014 by sreemathi.v

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$2K_3Fe(CN)_6+2KOH\rightarrow x+y+z$,$H_2O_2+z\rightarrow y+w$.The $z$ is

asked Jan 24, 2014 by sreemathi.v

1 answer

$2K_3Fe(CN)_6+2KOH\rightarrow x+y+z$,$H_2O_2+z\rightarrow y+w$.The $y$ is

asked Jan 24, 2014 by sreemathi.v

1 answer

$2K_3Fe(CN)_6+2KOH\rightarrow x+y+z$,$H_2O_2+z\rightarrow y+w$. The $x$ is

asked Jan 24, 2014 by sreemathi.v

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$KIO_4$ is reduced to $KIO_4+H_2O_2\rightarrow $____________

asked Jan 24, 2014 by sreemathi.v

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The volume strength of ion $H_2O_2$ is

asked Jan 24, 2014 by sreemathi.v

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The wrong state in the below about $H_2O_2$ is

asked Jan 24, 2014 by sreemathi.v

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$ ^{\sim}(p \wedge q)$ is equivalent to

asked Jan 24, 2014 by thanvigandhi_1

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Which one of the following reactions does not form gaseous product?

asked Jan 24, 2014 by sreemathi.v

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In alkaline medium $H_2O_2$ reacts with $Fe^{3+}$ and $Mn^{2+}$ separately to give

asked Jan 24, 2014 by sreemathi.v

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Polyphosphates are used as water softening agents because they

asked Jan 24, 2014 by sreemathi.v

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$4LiH+AlCl_3\quad\underrightarrow{\text{dry ether}}\quad x+y$. $y$ is

asked Jan 24, 2014 by sreemathi.v

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$4LiH+AlCl_3\quad\underrightarrow{\text{dry ether}}\quad x+y$. $x$ is

asked Jan 24, 2014 by sreemathi.v

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$2Na+H_2\quad\underrightarrow{heat}\quad 2NaH$,$Ca+H_2\rightarrow CaH_2$,$2Li+H_2\rightarrow x$.Then $x$ is

asked Jan 24, 2014 by sreemathi.v

1 answer

$Cu+H_2\quad\underrightarrow {heat}\quad Cu+x$,$ZnO+y\quad\underrightarrow{heat} \quad Zn+H_2O$,$2AgCl+H_2\rightarrow z+w$.The $w$ is

asked Jan 24, 2014 by sreemathi.v

1 answer

$Cu+H_2\quad\underrightarrow {heat}\quad Cu+x$, $ZnO+y\quad\underrightarrow{heat} \quad Zn+H_2O$, $2AgCl+H_2\rightarrow z+w$. The $z$ is

asked Jan 24, 2014 by sreemathi.v

1 answer

$Cu+H_2\quad\underrightarrow {heat}\quad Cu+x$,$ZnO+y\quad\underrightarrow{heat} \quad Zn+H_2O$,$2AgCl+H_2\rightarrow z+w$.The $y$ is

asked Jan 24, 2014 by sreemathi.v

1 answer

$Cu+H_2\quad\underrightarrow {heat}\quad Cu+x$,$ZnO+y\quad\underrightarrow{heat} \quad Zn+H_2O$,$2AgCl+H_2\rightarrow z+w$.The $x$ is

asked Jan 24, 2014 by sreemathi.v

1 answer

Decomposition of $NaCl\rightarrow x+y$.They are

asked Jan 24, 2014 by sreemathi.v

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Hydrolith a source of hydrogen is

asked Jan 24, 2014 by sreemathi.v

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If the electron energy is -3.4 eV , Find the principal quantum number of H-atom?

asked Jan 24, 2014 by sharmaaparna1

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The hydride gap is used for element of group?

asked Jan 24, 2014 by sreemathi.v

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The velocity of an electron in a certain Bohr's orbit of H-atom bears the ratio 1:275 to the velocity of light. Then find the quantum numbers (n) of orbit.

asked Jan 24, 2014 by sharmaaparna1

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An ion $Mn^{a+}$ has the magnetic moment equal to 4.9bm. What is the value of a ?

asked Jan 24, 2014 by sharmaaparna1

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If $a, b, c$ are in $GP$ and equations $ax^2+2bx+c=0$ and $dx^2+2ex+f=0$ have a common root, then $\large\frac{d}{a}$, $\large\frac{e}{b}$, $\large\frac{f}{c}$ are in

asked Jan 24, 2014 by yamini.v

1 answer

Which element form Hydride?

asked Jan 24, 2014 by sreemathi.v

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Which is polymeric hydride?

asked Jan 24, 2014 by sreemathi.v

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If $\large\frac{a_{2}a_{3}}{a_{1}a_{4}}$ = $\large\frac{a_{2}+a_{3}}{a_{1}+a_{4}}$ = $3\;(\large\frac{a_{2}-a_{3}}{a_{1}-a_{4}})$, then, $a_{1}$, $a_{2}$, $a_{3}$, $a_{4}$ are in

asked Jan 24, 2014 by yamini.v

1 answer

The coordination no of Na is solid NaH is

asked Jan 24, 2014 by sreemathi.v

1 answer

Hydrogen reacts with different elements to from variety of hydrides.$1^{st}$ group and $2^{nd}$ group elements form white,crystalline ionic hydride their stability depends upon ionic characters and lattic energy covalent hydride is common type of hydrides transition metals form interstitial hydrides.Which ionic hydride is stable up to its mp?

asked Jan 24, 2014 by sreemathi.v

1 answer

If $(m+n)^{th}$, $(n+1)^{th}$, $(r+1)^{th}$ term of an AP are in GP and $m, n, r$ are in HP, then ratio of first term of AP to common difference is

asked Jan 24, 2014 by yamini.v

1 answer

By what percentage should the volume be decreased to increase the pressure by 10% at constant temperature?

asked Jan 24, 2014 by balaji.thirumalai

1 answer

Hyperol is an addition product of $H_2O_2$ with

asked Jan 24, 2014 by sreemathi.v

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The gas liberated when alkaline formaldehyde solution is reacted with hydrogen peroxide in the presence of pyragahol is

asked Jan 24, 2014 by sreemathi.v

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What is the oxidation state of Fe in the product formed when acidified pottasium ferrocyanide treated with $H_2O_2$?

asked Jan 24, 2014 by sreemathi.v

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If the speed of sound in Hydrogen at NTP is equal to the speed of sound in carbon-di-oxide at $T_0$, what is the value of $T_0$? (i.e, $T = 273K$)

asked Jan 24, 2014 by balaji.thirumalai

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Which of the following is not a true peroxide

asked Jan 24, 2014 by sreemathi.v

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$a^x=b^y=c^z=d^t$ and $a, b, c, d$ are in GP, then $x, y, z, t$ are in

asked Jan 24, 2014 by yamini.v

1 answer

$H_2O_2$ is obtained by action of dil $H_2SO_4$ on

asked Jan 24, 2014 by sreemathi.v

1 answer

$H_2O_2$ reacts with acidified $K_2Cr_2O_7$ the product formed is

asked Jan 24, 2014 by sreemathi.v

1 answer

Sound travels with a speed $v$ in hydrogen gas at NTP. At what temperatures does carbon-di-oxide have a rms (root mean square) velocity of $2v$ (Note: $T_0 = 273K$ and $\gamma$ for $H_2 = \large\frac{7}{5}$)

asked Jan 24, 2014 by balaji.thirumalai

1 answer

The formula of pertitanic acid is

asked Jan 24, 2014 by sreemathi.v

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Which of the following statement is incorrect

asked Jan 24, 2014 by sreemathi.v

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In acidic solution $H_2O_2$ oxidises $Hg$ to

asked Jan 24, 2014 by sreemathi.v

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$ ^{\sim}(p \leftrightarrow q)$ is equivalent to

asked Jan 23, 2014 by thanvigandhi_1

1 answer

$(p \wedge\: ^{\sim}q) \wedge (^{\sim}p V q)$ is

asked Jan 23, 2014 by thanvigandhi_1

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$ ^{\sim}[(p \wedge q) \rightarrow (^{\sim}p V q)]$ is

asked Jan 23, 2014 by thanvigandhi_1

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If p,q,r are simple propositions, then $(p \wedge q) \wedge (q \wedge r)$ is true, then

asked Jan 23, 2014 by thanvigandhi_1

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If p, q, r are simple propositions with truth values T,F,T then the truth value of $ [(^{\sim}p Vq) \wedge ^{\sim}r] \Rightarrow p$ is

asked Jan 23, 2014 by thanvigandhi_1

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The statement $ p V q \Rightarrow \: p \wedge q$ is a

asked Jan 23, 2014 by thanvigandhi_1

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