List of top Chemistry Questions on Group 15 Elements

The maximum covalency of a non-metallic group 15 element 'E' with the weakest E-E bond is:

Identify the non-biodegradable wastes from the following:

[I.] Thermal power plants which produce fly ash

[II.] Wastes generated by cotton mills

[III.] Wastes produced by food processing units

[IV.] Slag produced from blast furnace

In the disproportionation reaction of nitrous acid, X is formed along with nitric acid and water. X can also be obtained by the reaction of:

Identify the correctly matched sets: 
CO - neutral oxide GeO - acidic oxide PbO - basic oxide
 

In which of the following reactions, hydrogen is one of the products formed?
Reaction of BF\(_3\) with LiAlH\(_4\) in diethyl ether Hydrolysis of diborane Oxidation of sodium borohydride with iodine Combustion of diborane
The total number of products formed in the following reactions:
LiNO\(_3\) \(\xrightarrow{\Delta}\) Products NaNO\(_3\) \(\xrightarrow{\Delta}\) Products Be(NO\(_3\))\(_2\) \(\xrightarrow{\Delta}\) Products
In which of the following reactions phosphine is not formed?
(a) Baryte,
(b) Galena, 
(c) Zinc blende and 
(d) Copper pyrites. 
How many of these minerals are sulphide based?
Arrange the hydrides of group 15 in correct decreasing order of reducing nature:
An organic compound $'A'$ is oxidized with ${Na2O2}$ followed by boiling with ${HNO3}$. The resultant solution is then treated with ammonium molybdate to yield a yellow precipitate. Based on above observation, the element present in the given compound is :
The correct order of the oxidation states of nitrogen in $NO, N_2O, NO_2$ and $N_2 O_3$ is :
Sodium nitrite is reacted with $H_2SO_4$ to form $NaHSO_4, HNO_3$, water and $X$. Gold is dissolved in aqua-regia to form water, $AuCl^{-}_4$ and $Y. X$ and $Y$ are respectively
White phosphorus is heated with concentrated $NaOH$ in $CO _{2}$ atmosphere to form a gas $A$ and compound $B$. When $A$ is bubbled into aqueous $CuSO _{4}$ solution copper phosphide and $C$ are formed, $B$ and $C$ are respectively
Which one of the following is not present in the nitration mixture?
In case of nitrogen, $NCl_3$ is possible but not $NCl_5$ while in case of phosphorus, $PCl_3$ as well as $PCl_5$ are possible. It is due to
Which of the following statements are correct? I) $\ce{P_4}$ molecule is very reactive because of angular strain II) The basicity of $\ce{H_3PO_3}$ is $3$ III) In gas phase, all $\ce{P-Cl}$ bonds of $\ce{PCl_5}$ have same bond length IV) In solid state.$ \ce{PCl_5}$ exists as an ionic solid, in which anion $\ce{[PCl_6]^{-}}$ has octahedral and cation $\ce{[PCl_4]^{+}}$ has tetrahedral shape.
Group 15 elements have more electron gain enthalpy than group 16-elements. The correct reason for this is
Which one of the following does not produce $O_{2}$ as the only gaseous product on heating?
With excess of water, both $P_{2}O_{5}$ and $PCl_{5}$ give
Sulphur in + 3 oxidation state is present in
Which one of the following forms vortex ring?
The molecule having smallest bond angle is :
The following are some statements related to $VA $ group hydrides, I. Reducing property increases from $NH_{3}$ to $BiH_{3}$ II. Tendency to donate lone pair decreases from $NH_{3}$ to $BiH_{3}$ III. Thermal stability of hydrides decreases from $NH_{3}$ to $BiH_{3}$ IV. Bond angle of hydrides decreases from $NH_{3}$ to $BiH_{3}$ The correct statements are
The colourless gas that turns brown in air is
Which one is the correct representation of $ NH_{4}^{+} $ ion?