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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Among the following, which one is a wrong statement?

(1) PH5 and BiCl5 do not exist

(2) ρp-dp bonds are present in SO2

(3) SeF4 and CH4 have same shape

(4) I3+ has bent geometry

Subtopic:  Group 17 - Preparation, Properties & Uses | Group 15 - Preparation, Properties & Uses |
 60%
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 product obtained as a result of a reaction of nitrogen with CaC2 is:

1. CaCN         

2. CaCN3

3. Ca2CN       

4. CaCN2

Subtopic:  Group 15 - Preparation, Properties & Uses |
 62%
NEET - 2016
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Nitrogen dioxide and sulphur dioxide have some properties in common. Which property is

shown by one of these compounds. but not by the other?

1. Forms acid-rain

2. Is a reducing agent

3. Is soluble in water

4. ls used as a food-preservative

Subtopic:  Group 15 - Preparation, Properties & Uses |
 51%
NEET - 2015
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The maximum bond angle at nitrogen is present in which of the following?

1. NO2

2. NO2-

3. NO2+

4. NO3-

Subtopic:  Group 15 - Preparation, Properties & Uses |
 59%
NEET - 2015
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Roasting of sulphides gives the gas X as a by-product. This is a colourless gas with choking smell of burnt sulphur and causes great damage to respiratory organs as a result of acid rain. Its aqueous solution is acidic acts as a reducing agent and its acid has never been isolated. The gas X is

1. H2S

2. SO2

3. CO2

4. SO3

Subtopic:  Group 16 - Preparation, Properties & Uses |
 82%
NEET - 2013
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When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation

number of chlorine changes from

1. zero to +1 and zero to -5

2. zero to -1 and zero to +5

3. zero to -1 and zero to +3

4. zero to +1 and zero to -3

 

Subtopic:  Group 17 - Preparation, Properties & Uses |
 76%
From NCERT
NEET - 2012
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Among the following which is the strongest oxidising agent ?

1. F2

2. Br2

3. I2

4. Cl2

Subtopic:  Group 17 - Preparation, Properties & Uses |
 84%
From NCERT
NEET - 2009
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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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