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Akshit Chaturvedi
Subject: Chemistry
, asked on 9/3/18
why does the reactivity of nitrogen differ from phosphorous ?
Ans : Due to small size , high electronegtivity and non-availibilty of d-orbitals the reactivty of nitrogen is different from phosphorus . Is this ans ok ?
Answer
4
Varnika Dhiman
Subject: Chemistry
, asked on 8/3/18
How NH3 is prepared on small scale ?!.. I) Decay of nitrogenous organic matter example urea.. NH2CONH2 + .... ----> Kindly complete the reaction.
Answer
4
Varnika Dhiman
Subject: Chemistry
, asked on 8/3/18
Why group 15 acts as a Lewis base and group 16 act as Lewis acid ?!.. [No links plz; I've already checked previous answers.]
Answer
2
Varnika Dhiman
Subject: Chemistry
, asked on 8/3/18
The last element of group 16 polonium has low melting point and boiling point in its period. Explain.
Answer
1
Varnika Dhiman
Subject: Chemistry
, asked on 8/3/18
Kindly answer question no. 52
Q52. Why is neon generally used in warning signals ?
Answer
3
Varnika Dhiman
Subject: Chemistry
, asked on 8/3/18
Q.51. What is the reason for the existence of
?
Answer
2
Varnika Dhiman
Subject: Chemistry
, asked on 8/3/18
Q. Why does
P
C
I
3
, fume in the presence of moist air?
Answer
1
Varnika Dhiman
Subject: Chemistry
, asked on 8/3/18
49. Explain the order of acidic strength of various oxoacids of chlorine.
Answer
3
Varnika Dhiman
Subject: Chemistry
, asked on 8/3/18
Please answer
Answer
1
Varnika Dhiman
Subject: Chemistry
, asked on 8/3/18
Question no. 47, 1 and b part both. Kindly answer.
47. a. Why does the addition Of C1
2
to KI solution give it a brown colour but excess Of C1
2
turns it colourless?
b. CIF
3
exists but FCI
3
, does not. Why?
48. Among OF
2
: and C1
2
O, Which has a higher bond angle?
49. Explain the order of acidic strength of various oxoacids of chlorine.
50. Why does PCI, fume in the presence of moist air?
51. What is the reason for the existence Of (CH
3
)
3
P = O, and non-existence Of (CH
3
)
3
N = O?
52. Why is neon generally used in warning Signals?
Answer
1
Varnika Dhiman
Subject: Chemistry
, asked on 8/3/18
Kindly answer this in a short and explanatory way.
Answer
1
Prerna Varshney
Subject: Chemistry
, asked on 8/3/18
Arrange the following in the increasing order of property mentioned :
(a) H3PO3
, H3PO4
, H3PO2 (Reducing character)
Give reason for your ans
Answer
1
Varnika Dhiman
Subject: Chemistry
, asked on 25/2/18
It's a repost. Kindly answer to what I'm asking; from board's point of view.
Answer
1
Varnika Dhiman
Subject: Chemistry
, asked on 24/2/18
SO2 is reducing while TeO2 is oxidising. But, both of the oxides are acidic in nature. I want to know two things here :- 1) Why both of these are acidic ?!.. 2) Is there any relation between oxidising/reducing character with acidity of any oxide+hydride ?!.. 【Kindly answer both the questions here only, as they are interrelated.】
Answer
1
Kurian J
Subject: Chemistry
, asked on 23/2/18
Structure of if5 ??
Answer
1
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What are you looking for?
Ans : Due to small size , high electronegtivity and non-availibilty of d-orbitals the reactivty of nitrogen is different from phosphorus . Is this ans ok ?
Q52. Why is neon generally used in warning signals ?
![]()
?Q. Why does , fume in the presence of moist air?
47. a. Why does the addition Of C12 to KI solution give it a brown colour but excess Of C12 turns it colourless?
b. CIF3 exists but FCI3, does not. Why?
48. Among OF2: and C12O, Which has a higher bond angle?
49. Explain the order of acidic strength of various oxoacids of chlorine.
50. Why does PCI, fume in the presence of moist air?
51. What is the reason for the existence Of (CH3)3 P = O, and non-existence Of (CH3)3 N = O?
52. Why is neon generally used in warning Signals?
(a) H3PO3
, H3PO4
, H3PO2 (Reducing character)
Give reason for your ans