Identify the incorrect statement regarding the halogens.
 
1. All form monobasic oxyacids.
2. All are oxidizing agents.
3. All but fluorine show positive oxidation states.
4. Chlorine has the highest electron-gain enthalpy.
Subtopic:  Group 17 - Preparation, Properties & Uses |
From NCERT
NEET - 2018
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In the structure of ClF3, the number of lone pairs of electrons on central atom 'Cl' is:

1. 1

2. 2

3. 3

4. 4

Subtopic:  Interhalogen Compounds |
 80%
From NCERT
NEET - 2018
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Match the interhalogen compounds of Column I with the geometry in Column II and assign the correct code.

Column I             Column II
A. XX'                 (i) T-shape
B. XX'3               (ii) Pentagonal bipyramidal
C. XX'5               (iii) Linear
D. XX'7                (iv) Square-pyramidal
                           (v) Tetrahedral

The correct match among the following is -
       A   B    C    D
1.   (iii) (iv) (i) (ii)

2.   (iii) (i) (iv) (ii)

3.   (v) (iv) (iii) (ii)

4.   (iv) (iii) (ii) (i)

Subtopic:  Interhalogen Compounds |
 80%
From NCERT
NEET - 2017
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Match the interhalogen compounds in column I with the geometry in column-II and assign the correct code: 
Column-I Column-II
(A) XX’ (i) T-shape
(B) XX’3 (ii) Pentagonal bipyramidal
(C) XX’5 (iii) Linear
(D) XX’7 (iv) Square Pyramidal
 
(A) (B) (C) (D)
1. (iii) (i) (iv) (ii)
2. (i) (iv) (iii) (ii)
3. (iv) (iii) (ii) (i)
4. (iii) (iv) (i) (ii)
Subtopic:  Interhalogen Compounds |
 81%
From NCERT
NEET - 2017
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Choose the pairs of isoelectronic compounds which are isostructural:

1. TeF2, XeF2

2. IBr2-, XeF2

3. IF3, XeF2

4. BeCl2, XeF2

Subtopic:  Group 17 - Preparation, Properties & Uses |
 60%
From NCERT
NEET - 2017
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In which pair of ions both the species contain S-S bond?

1. S2O72-, S2O82-

2. S4O62-, S2O32-

3. S4O62-, S2O72-

4. S2O72-, S2O32-

Subtopic:  Group 16 - Preparation, Properties & Uses |
NEET - 2017
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AlF3 is soluble in HF only in presence of KF. It is due to the formation of
(1) K3[AIF3H3]

(2) K3[AIF6]

(3) AlH3

(4) K[AIF3H]

Subtopic:  Group 17 - Preparation, Properties & Uses |
 81%
NEET - 2016
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Hot concentrated sulphuric acid is a moderately strong oxidising agent. Which of the following reaction doe not show oxidising behaviour?

(a) Cu + 2H2SO4 CuSO4 + SO2 + 2H2O

(b) 3S + 2H2SO4 3SO2 + 2H2O

(c) C + 2H2SO4 CO2 + 2SO2 + 2H2O

(d) CaF2 + H2SO4 CaSO4 + 2HF

Subtopic:  Group 16 - Preparation, Properties & Uses |
 74%
NEET - 2016
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Copper on heating with concentrated HNO3 produces:

1. Cu(NO3)2 and NO       

2. Cu(NO3)2, NO and NO2

3. Cu(NO3)2 and N2O       

4. Cu(NO3)2 and NO2

Subtopic:  Group 15 - Preparation, Properties & Uses |
 68%
From NCERT
NEET - 2016
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The correct statement about given acids is:

1. Phosphinic acid is a monoprotic acid while phosphonic acid is a diprotic acid.
2. Phosphinic acid is a diprotic acid while phosphonic acid is a monoprotic acid.
3. Both are triprotic acids.
4. Both are diprotic acids.

Subtopic:  Group 15 - Preparation, Properties & Uses |
 65%
From NCERT
NEET - 2016
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