Question 2 :
Which one of the following elements does not form the compound, M$_{4}$ O$_{10}$ (M = element)?<br/><br/>
Question 3 :
The type of bond between the atoms in a nitrogen molecule is :
Question 4 :
Assertion: $H_{3}PO_{4}$ and $H_{3}PO_{3}$ both are present in fertilizers.
Reason: $H_{3}PO_{3}$ increases the solubility of fertilizers.
Question 7 :
Which of the following pairs is obtained on heating ammonium dichromate?
Question 9 :
Which of the following oxides of nitrogen are coloured in nature?
Question 10 :
Which of the following is correct statement regarding $N(CH_3)_3$ and $N(SiH_3)_3$?
Question 19 :
Which of the following is an example of super octet molecule?
Question 21 :
Which of the following is correct about V group Hydrides (from ammonia to Bismuthine)<br/>
Question 26 :
Nitrogen form $N_2$, but phosphorous form $P_2$, it'sat a time convert in $P_4$, reason is : -
Question 28 :
Maximum number of covalent bonds formed by N and P respectively are :
Question 29 :
Which of the following oxoacids of nitrogen has most acidic character?<br/>$I.\ N_2O_3 \\ II.\ NO_2 \\ III. \ N_2O_5 \\ IV.\ NO$
Question 30 :
Assertion (A): The basic nature of VA group hy-drides decreases from ammonia to bismuthine.<br/>Reason (R): Availability of lone pair on the cen-tral atom in hydrides decreases down the group.<br/>
Question 31 :
Nitrogen forms $N_2$ but phosphorus is converted into $P_4$ from $P_2$. The reason for this is:<br>
Question 33 :
In which of the following arrangement the order is not according to the property indicated against it:
Question 34 :
Assertion: A mixture of nitrogen and carbon dioxide can be distinguished by passing it through lime water.
Reason: Nitrogen does not turn lime water milky.
Question 35 :
In atoms of nitrogen molecule, which type of bond are present ?<br/>
Question 36 :
Pentavalence in phosphorus is more stable when compared to that of nitrogen even though they belong to same group is due to :
Question 38 :
The single $X-X$ bond made by $N$ is weaker than that of $P$ because:
Question 39 :
Assertion: Nitrogen reacts with hydrogen to form ammonium hydroxide.
Reason: Reaction of nitrogen with hydrogen is endothermic.
Question 41 :
Assertion: Nitrogen turns moist red litmus paper blue.
Reason: Ammonia is a basic gas.
Question 42 :
Trimethyl phosphine oxide can be represented by two canonical forms as shown but trimethylamine oxide can't be. It is due to:<br/>
Question 47 :
Potassium dichromate is a good oxidizing agent, in acidic medium the oxidation state of chromium changes by:
Question 49 :
In the commercial preparation of dinitrogen by the liquefaction and fractional distillation,dinitrogen is obtained in:
Question 51 :
Which of the following halide of nitrogen is not explosive in nature?
Question 59 :
Which among the following group 15 element forms most stable pentavalent compound?
Question 60 :
Nitrogen differs from P, As, Sb and Bi in the following properties :
Question 61 :
Assertion: Nitric oxide is para magnetic while ${N}_{2}O$ is diamagnetic.
Reason: Nitrogen exhibits variable valency in $NO$ and ${N}_{2}O$.
Question 62 : Match List I with List II and select the correct answer using the codes given below the lists<table class="wysiwyg-table"><tbody><tr><td>List I (Compound)</td><td>List II (Oxidation state of $N$)</td></tr><tr><td>(A) ${NO}_{2}$</td><td>(1) $+5$</td></tr><tr><td>(B) $HNO$</td><td>(2) $-3$</td></tr><tr><td>(C) ${NH}_{3}$</td><td>(3) $+4$</td></tr><tr><td>(D) ${N}_{2}{O}_{5}$</td><td>(4) $+1$</td></tr></tbody></table>
Question 64 :
In Nitrogen family the H-M-H angle in the hydrides $MH_{3}$ gradually becomes closer to $90^0$ on going from N to Sb. This shows that gradually :<br/>
Question 65 :
Which of the following compound is used in detection of metal ions such as $Cu^{+2},\ Ag^{+}$?
Question 66 :
Which one of the following acid possesses oxidising, reducing and complex forming properties?
Question 67 :
State True or False.<br/>Nitrous acid acts both as an oxidising and a reducing agent.
Question 68 :
$N{ F }_{ 3 }$ is stable. But, $N{ Cl }_{ 3 }$ is explosive. Identify the reason :
Question 74 :
Assertion: R$_{3}$P = O exists but R$_{3}$N = O does not exist.
Reason: P is more electronegative than N.
Question 75 :
Which of the following halide of nitrogen is unstable in nature?
Question 76 :
One mole of ${N}_{2}{H}_{4}$ loses $10$ mol of electrons to form a new compound $Y$. Assuming that all nitrogen appear in the new compound, what is the oxidation state of ${N}_{2}$ in $Y$? (There is no change in the oxidation state of hydrogen)
Question 77 :
Assertion: $N_2H_4$ is a weaker base than $NH_3$
Reason: Its behaviour is bifunctional
Question 79 :
Nitrogen forms stable $N_{2}$ molecule but phosphorus is converted to $P_{4}$ from $P_{2}$because:
Question 82 :
Which of the following halide of nitrogen is stable in nature?
Question 83 :
The oxides of $15^{th}$ group elements of the type $M_{2}O_{3}$ which will exhibit amphoteric or basic properties but no acidic properties are__________.<br/>
Question 85 :
Which of these ions need to be stored in fairly acidic media?
Question 86 :
The boiling point of the following hydrides follow the order of
Question 88 :
Assertion: Elementary phosphorus exists in three principal allotropic forms, i.e. white (or yellow), red (or violet) and black
Reason: Of the three forms, white phosphorus is the most important and most reactive<br/>Read the above assertion and reason and choose the correct statement regarding it.<br/>
Question 89 :
When bismuth chloride is poured into a large volume of water, the white precipitate formed is:
Question 94 :
The Lewis base strength of nitrogen halide is the maximum for :<br/>
Question 96 :
The reactivity of the following compounds toward water is in the order:
Question 97 :
Nitrogen and phosphorus are both in Group 15 of the Periodic Table. Phosphorus forms a chloride with the formula $P{Cl}_{5}$ but nitrogen does not form $N{Cl}_{5}$.<br>Which statements help to explain this?<br>1. Nitrogen's outer shell cannot contain more than eight electrons.<br>2. Nitrogen cannot have an oxidation state of $+5$<br>3. Nitrogen is less electronegative than phosphorus.
Question 98 :
In case of nitrogen, $ NCl_3$ is possible but not $NCl_5$ whereas in case of phosphorus $PCl_3$ as well as $PCl_5$ are possible. It is due to:
Question 100 :
Assertion: Nitrogen is unreactive at room temperature but becomes reactive at elevated temperatures or in presence of a catalyst.
Reason: In nitrogen molecule, there is extensive delocalization of electrons.
