Dinitrogen Pentoxide

Q. Which of the following can be used as anesthetic?

1. $N_{2}O$
2. $NO$
3. $N_2{O}_3$
4. $N{H}_3$

Q. Among the oxides of Nitrogen, the highest and lowest oxidation states for Nitrogen are +5 and +1 respectively – True or False?

1. False
2. True

Q. Which of the following oxoacid of phosphorus contains a $P-O-P$ bond?

1. Pyrophosphoric acid
2. Hypophosphoric acid
3. Hypophosphorous acid
4. Phosphorous acid

Q. Total number of compounds having at least one bridging oxo group among the molecules given below is:
$N_2{O}_3,N_2{O}_5,P_4{O}_6,P_4{O}_7,H_4{P}_2{O}_5,H_2{S}_2{O}_3,H_2{S}_2{O}_5$

1. $2$
2. $4$
3. $3$
4. $5$

Q. Phosphorus pentoxide on reaction with concentrated nitric acid gives dinitrogen pentoxide – True or False?

1. True
2. False

Q.

$A\stackrel{\Delta }{\to }B+C\uparrow A\underset{Both}{\&}B+NaOH+Zn\to D\uparrow +N{a}_{2}Zn{O}_2+H_{2}ON{a}_{2}C{O}_3\left(aq\right)\underset{passed}{\overset{mixturesNO\&N{O}_2}{\to }}E+F\uparrow$

Identify the Incorrect statement for the above sequence of the reaction

1. ‘C’ is paramagnetic & ‘F’ is diamagnetic

2. Both A & E are same compounds

3. ‘D’ gives white dense fumes with conc.HCl

4. Both D & F forms a very important fertilizer

Q.

Which is(are) true about $N_2{O}_5$?

1. It is an anhydride of nitric acid.

2. In solid state, it exists as $N{O}_2^{+}N{O}_3^{-}$

3. It is structurally similar to $P_2{O}_5$

4. It can be prepared by heating $HN{O}_3$ over $P_2{O}_5$

Q.

Which is(are) true about $N_2{O}_5$?

1. It is an anhydride of nitric acid.

2. In solid state, it exists as $N{O}_2^{+}N{O}_3^{-}$

3. It is structurally similar to $P_2{O}_5$

4. It can be prepared by heating $HN{O}_3$ over $P_2{O}_5$

Q. $N_2{O}_3,N_2{O}_5,P_4{O}_6,P_4{O}_7,H_4{P}_2{O}_5,H_2{S}_2{O}_3,H_2{S}_2{O}_5$
Total number of compounds having at least one bridging oxo group among the molecules given above is

Q. The number of peroxy oxygen in $Cr{O}_5$ is

1. 5
2. 4
3. 3
4. 1

Q. Which of the following compounds can be used to obtain free nitrogen?

1. $N{H}_{4}N{O}_2$
2. $HN{O}_2$
3. $HN{O}_3$
4. $N{H}_3$

Q. Phosphorus pentoxide on reaction with concentrated nitric acid gives dinitrogen pentoxide – True or False?

1. True
2. False

Q. Benzoquinone is prepared by reaction of phenol with____________.

1. $N{a}_{2}C{r}_2{O}_7,H_{2}S{O}_4$
2. $KMn{O}_4,H_{2}S{O}_4$
3. $N{a}_{2}Cr{O}_4,HCl$
4. $K_{2}Mn{O}_4,H_{2}S{O}_4$

Q.

Write proper symbols for x and y in the following chemical equation.

${\mathrm{CH}}_4\left(x\right)+2{\mathrm{O}}_3\left(\mathrm{g}\right)\to {\mathrm{CO}}_2\left(y\right)+2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)$

Q. The bonds present in $N_2{O}_5$ are:

1. Only ionic
2. Covalent and coordinate
3. Only covalent
4. Covalent and ionic

Q. In ${\left[Fe\right(NH}_3{)}_6{]Cl}_3$ the number of covalent bonds is:

1. 3
2. 6
3. 9
4. 18

Q. Which one of the following amide will not undergo Hoffmann bromamide reaction?

1. ${CH}_{3}CONH{CH}_3$
2. $C_6{H}_{5}CO{NH}_2$
3. ${CH}_{3}CO{NH}_2$
4. ${CH}_3{CH}_{2}CO{NH}_2$

Q. How many liters of $C{l}_2$ at STP will be liberated by the oxidation of $NaCl$ with 10 g $KMn{O}_4$ in acidic medium?

1. $1.77$
2. None of these
3. $3.54$
4. $7.08$

Q. Among the oxides of Nitrogen, the highest and lowest oxidation states for Nitrogen are +5 and +1 respectively – True or False?

1. True
2. False

Q. A mole of $N_2{H}_4$ loses $10$ mol of electrons to form a new compound $Y$. Assuming that all the nitrogen appears in the new compound, what is the oxidation state of nitrogen in $Y$? (There is no change in the oxidation number of hydrogen)

1. $-1$
2. $-3$
3. $+3$
4. $+5$

Q. An organic compound gives hydrogen on reacting with sodium metal. It also gives iodoform test and forms an aldehyde of molecular formula $C_2{H}_{4}O$ on oxidation with acidified dichromate the compound is:

1. $C{H}_{3}OH$
2. $C{H}_{3}COOH$
3. $C{H}_{3}CHO$
4. $C_2{H}_{5}OH$

Q. The compounds obtained by heating of orthophosphoric acid are :

1. pyrophosphoric acid.
2. metaphosphoric acid.
3. $P_4{O}_{10}$.
4. $P_4{O}_6$.

Q. One mole of hydrazine $\left(N_2{H}_4\right)$ loses $10$ moles of electrons in a reaction to form a new compound $X$. Assuming that all the nitrogen atoms in hydrazine appear in the new compound, what is the oxidation state of nitrogen in $X$? (Note There is no change in the oxidation state of hydrogen in the reaction)

1. $-1$
2. $-3$
3. $+1$
4. $+3$
5. $+5$

Q. Assertion :Zinc, manganese, cobalt and nickel ions present in 4th group is having same oxidation group. Reason: d-block metals having lower oxidation states have higher $K_{sp}$.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
3. Assertion is correct but Reason is incorrect.
4. Both Assertion and Reason are incorrect.

Q.

Which is(are) true about $N_2{O}_5$?

1. It is an anhydride of nitric acid.

2. In solid state, it exists as $N{O}_2^{+}N{O}_3^{-}$

3. It is structurally similar to $P_2{O}_5$

4. It can be prepared by heating $HN{O}_3$ over $P_2{O}_5$

Q. The two types of bonds present in $B_2{H}_6$ are covalent and ______.

1. ionic
2. co ordinate
3. hydrogen bridge bond
4. None of these

Q. Which of the following is not a nitro derivative?

1. $C{H}_{3}C{H}_{2}ONO$
2. $C_6{H}_{5}N{O}_2$
3. $(C{H}_3{)}_2-CH-N{O}_2$
4. $C_6{H}_4\left(OH\right)N{O}_2$

Q. The oxidation state of nitrogen is correctly given for :

1. $\begin{array}{cc}Compound& Oxidationstate\\ \left[Co{\left(N{H}_3\right)}_{5}Cl\right]{Cl}_2& 0\end{array}$
2. $\begin{array}{cc}Compound& Oxidationstate\\ N{H}_{2}OH& -2\end{array}$
3. $\begin{array}{cc}Compound& Oxidationstate\\ {\left(N_2{H}_5\right)}_{2}S{O}_4& +2\end{array}$
4. $\begin{array}{cc}Compound& Oxidationstate\\ {Mg}_3{N}_2& -3\end{array}$

Q. $1$ mole of $N_2{H}_4$ loses $10$ mol of electrons to form a new compound $Y$. Assuming that all the nitrogen appear in the new compound, what is the oxidation state of nitrogen in $Y$? (no change in the oxidation state $H$).

Q. What are the oxidation states of phosphorus in the following:
(i) $H_{3}P{O}_3$ (ii) $PC{l}_3$ (iii) $C{a}_3{P}_2$ (iv) $N{a}_{3}P{O}_4$ (v) $PO{F}_3$?