Question 1 :
Which of the following pairs is obtained on heating ammonium dichromate?
Question 4 :
Which one of the following elements does not form the compound, M$_{4}$ O$_{10}$ (M = element)?<br/><br/>
Question 5 :
Which of the following is correct about V group Hydrides (from ammonia to Bismuthine)<br/>
Question 6 :
The type of bond between the atoms in a nitrogen molecule is :
Question 8 :
Which of the following is correct statement regarding $N(CH_3)_3$ and $N(SiH_3)_3$?
Question 13 :
Which of the following is an example of super octet molecule?
Question 20 :
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 22 :
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 23 :
$CN^-$ and $N_2$ are isoelectronic. But in contrast to $CN^-, N_2$ is chemically inert because of:
Question 25 :
Which of the following elements of group V-A does not show allotropy?
Question 26 :
Assertion: $NO_2$ and $CO_2$ both odd electron molecules and hence dimerizes.Reason :- On dimerisation, $ NO_{2} $ is converted to stable $ N_{2}O_{4} $ molecule with even number of electrons. <br/>
Question 29 :
Assertion: $N_2H_4$ is a weaker base than $NH_3$
Reason: Its behaviour is bifunctional
Question 30 :
In which of the following compounds the oxidation state of nitrogen is most negative?
Question 37 :
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 39 :
The element which forms oxides in all oxidation states + 1 to + 5 is:
Question 42 :
Which of these ions need to be stored in fairly acidic media?
Question 45 :
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 46 :
Which of the following halide of nitrogen is stable in nature?
Question 47 :
The boiling point of the following hydrides follow the order of
Question 49 :
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/>