Question 2 :
Which of the following oxides of nitrogen are coloured in nature?
Question 3 :
Which of the following is an example of super octet molecule?
Question 11 :
Nitrogen form $N_2$, but phosphorous form $P_2$, it'sat a time convert in $P_4$, reason is : -
Question 12 :
The type of bond between the atoms in a nitrogen molecule is :
Question 14 :
Which of the following pairs is obtained on heating ammonium dichromate?
Question 15 :
Which one of the following elements does not form the compound, M$_{4}$ O$_{10}$ (M = element)?<br/><br/>
Question 20 :
Which of the following is correct statement regarding $N(CH_3)_3$ and $N(SiH_3)_3$?
Question 21 :
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 23 :
Which of the following is correct about V group Hydrides (from ammonia to Bismuthine)<br/>
Question 26 :
Maximum number of covalent bonds formed by N and P respectively are :
Question 30 :
Which of the following halide of nitrogen is unstable in nature?
Question 31 :
Compound formed on reaction of nitrogen with oxygen at very high temperature is:
Question 34 :
Assertion: Nitrogen turns moist red litmus paper blue.
Reason: Ammonia is a basic gas.
Question 35 :
Which of the following elements can be involved in p$\pi-d\pi$ bonding?
Question 39 :
Which of the following halide of nitrogen is not explosive in nature?
Question 42 :
In all the group $15$ elements, the number of unpaired electrons in the valence shell is :
Question 43 : Match the List-I with List-II and select the correct answer from the given Codes.<table class="wysiwyg-table"><tbody><tr><td>List-I</td><td>List-II</td></tr><tr><td>(Compound)</td><td>(Oxidation state of nitrogen)</td></tr><tr><td>$N_2O_5$</td><td>$-2$</td></tr><tr><td>$NaN_3$</td><td>$+5$</td></tr><tr><td>NO</td><td>$-1/3$</td></tr><tr><td>$N_2H_4$</td><td>$+2$</td></tr></tbody></table>
Question 45 :
Which of the following compounds do not exist? <br/><br/>$N_4, P_4, PCI_5, NCI_5, P_2O_5, NO_2, PO_2$ :
Question 46 :
The single $X-X$ bond made by $N$ is weaker than that of $P$ because:
Question 47 :
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 48 :
The impurities formed during laboratory preparation of dinitrogen from ammonium chloride and sodium nitride is/are:
Question 52 :
Assertion: Nitrogen turns moist red litmus paper blue.
Reason: Ammonia is a basic gas.
Question 54 :
In which of the following arrangement the order is not according to the property indicated against it:
Question 55 :
The Group VA element that makes up part of bones and teeth is:<br/>
Question 59 :
Give examples of compounds of N with oxidation number -3 to +5.
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 63 :
The element which forms oxides in all oxidation states + 1 to + 5 is:
Question 65 :
Assertion: R$_{3}$P = O exists but R$_{3}$N = O does not exist.
Reason: P is more electronegative than N.
Question 68 :
Why does one who drinks alcohol get tempted to drink more alcohol?
Question 71 :
Nitrogen has unique ability to form $\displaystyle P\pi -P\pi $ multiple bonds with itself and with other elements due to:
Question 72 :
Pentavalence in phosphorus is more stable when compared to that of nitrogen even though they belong to same group is due to :
Question 75 :
Among VA group elements, the element which has highest ionization energy?<br/>
Question 79 :
The reactivity of the following compounds toward water is in the order:
Question 84 :
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 :
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 88 :
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.
Question 89 :
Which of the following halide of nitrogen is stable in nature?
Question 93 :
The boiling point of the following hydrides follow the order of
Question 94 :
Nitrogen forms stable $N_{2}$ molecule but phosphorus is converted to $P_{4}$ from $P_{2}$because:
Question 95 :
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 96 :
The Lewis base strength of nitrogen halide is the maximum for :<br/>
Question 98 :
When bismuth chloride is poured into a large volume of water, the white precipitate formed is:
Question 102 :
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 103 :
Which of these ions need to be stored in fairly acidic media?
