|
Give reason to explain why $CIF_{3 }$ exists but $FCl_{3 }$ does not exist?
|
|
0
|
793
|
November 3, 2016
|
|
Explain why the stability of oxoacids of chlorine increases in the order given below?
|
|
1
|
5834
|
November 3, 2016
|
|
Explain why fluorine forms only one oxoacid, HOF?
|
|
0
|
4292
|
November 3, 2016
|
|
With what neutral molecules is ${{ClO}^{-}}$ isoelectronic? Is that molecule a Lewis base?
|
|
0
|
1009
|
November 3, 2016
|
|
Write the two uses of ${{ClO}_{2}}$
|
|
0
|
519
|
November 3, 2016
|
|
Write the balanced equations for the following:
|
|
1
|
596
|
November 3, 2016
|
|
Arrange the following in the order of property indicated against each set
|
|
1
|
731
|
November 3, 2016
|
|
Sea is the greatest source hf some halogens. Comment
|
|
0
|
952
|
November 3, 2016
|
|
An amorphous solid A burns in air to form a gas B which turns lime water milky
|
|
1
|
10663
|
November 3, 2016
|
|
Identify the green and pink coloured compounds giving sequence of reactions
|
|
1
|
1013
|
November 3, 2016
|
|
How can you account for the formation of a large number of oxides having O2 - species not O-?
|
|
1
|
1873
|
November 3, 2016
|
|
How is the presence of $S{{O}_{2}}$ detected?
|
|
0
|
814
|
November 3, 2016
|
|
$S{ F }_{ 6 }$ is inert towards hydrolysis. Why?
|
|
1
|
2530
|
November 3, 2016
|
|
Which one has higher bond angle and why?
|
|
1
|
548
|
November 3, 2016
|
|
What are the oxidation states of phosphorus in the following compounds?
|
|
1
|
1956
|
November 3, 2016
|
|
Why does the reactivity of nitrogen different from phosphorus?
|
|
1
|
2129
|
November 3, 2016
|
|
Write a balanced equation for the hydrolytic reaction
|
|
1
|
697
|
November 3, 2016
|
|
Identify A and B, and write the formulae of their hydrolysis products
|
|
1
|
2089
|
November 3, 2016
|
|
Why is nitrous acid oxidant as well as reductant?
|
|
0
|
6415
|
November 3, 2016
|
|
Bond angle in $P{ H }_{ 4 }$ is higher than that in $P{ H }_{ 3 }$. Why?
|
|
0
|
2671
|
November 3, 2016
|
|
Nitric oxide becomes brown when released in air. Why?
|
|
1
|
8638
|
November 3, 2016
|
|
Why does nitrogen show catenation property less than phosphorus?
|
|
1
|
2134
|
November 3, 2016
|
|
Why are pentahalides more covalent than trihalides?
|
|
1
|
4237
|
November 3, 2016
|
|
Why does$NH _{ 3}$ form hydrogen bonding but $PH _{ 3}$ does not?
|
|
1
|
503
|
November 2, 2016
|
|
Account for the following
|
|
1
|
1563
|
November 2, 2016
|
|
Explain why $NH _{3 }$ is basic while $BiH _{3 }$ is only feebly basic?
|
|
0
|
567
|
November 2, 2016
|
|
Give reasons:Conc. HN${{O}_{3}}$, can be transported in aluminium container
|
|
1
|
596
|
August 13, 2016
|
|
What is the state of hybridization of carbon in (a) C${{O}_{3}}^{-2}$, (b) diamond, (c) graphite?
|
|
0
|
683
|
August 13, 2016
|
|
What do you understand by (a) Inert pair effect (b) allotropy, (c) catenation
|
|
0
|
2769
|
August 13, 2016
|
|
Discuss the pattern of variation in the oxidation states of (i) B to Tl, (ii) C to Pb
|
|
0
|
3042
|
August 13, 2016
|