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HSC Science (Computer Science) १२ वीं कक्षा - Maharashtra State Board Important Questions

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Arrange the following in the increasing order of the property mentioned:

\[\ce{HF}\], \[\ce{HCl}\], \[\ce{HBr}\], \[\ce{HI}\] (thermal stability)

Appears in 1 question paper
Chapter: [7] Elements of Groups 16, 17 and 18
Concept: Chemical Properties of Elements of Groups 16, 17 and 18

Write four points of differences between properties of nitrogen and other elements of group 15.

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: Concept of Group 15 Elements

The element that does NOT exhibit allotropy is

  1. As
  2. Sb
  3. Bi
  4. N
Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: Concept of Group 15 Elements

Explain how does nitrogen exhibit anomalous behaviour amongst group 15 elements.

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: Concept of Group 15 Elements

The hybridisation of phosphorus in phosphorus pentachloride is _______.

(A) dsp3

(B) sp3 d

(C) d2 sp3

(D) sp3 d2

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: p-Block elements of Group 15 Elements >> Compounds of Phosphorus

Describe the laboratory method of preparation of ammonia

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: p-Block elements of Group 15 Elements >> Ammonia

What is the action of hot/concentrated nitric acid on - Arsenic   

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: p-Block elements of Group 15 Elements >> Nitric Acid

Draw the structure of: Orthophosphoric acid 

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: p-Block elements of Group 15 Elements >> Compounds of Phosphorus

Draw structure and write geometry of PCl3 and PCl5.

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: p-Block elements of Group 15 Elements >> Compounds of Phosphorus

What is the action of Excess of air on ammonia ?

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: p-Block elements of Group 15 Elements >> Ammonia

What is the action of the following reagents on ammonia : 
Nessler's reagent

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: p-Block elements of Group 15 Elements >> Ammonia

Explain brown ring test with the help of chemical equation

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: p-Block elements of Group 15 Elements >> Nitric Acid

Write balanced chemical equations for action of potassium permanganate on: Hydrogen

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: p-Block elements of Group 15 Elements >> Oxides of Nitrogen

Draw the structure of: Pyrophosphoric acid

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: p-Block elements of Group 15 Elements >> Compounds of Phosphorus

Fe2+ ions react with nitric oxide formed from reduction of nitrate and yields a brown  coloured complex _____________.

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: p-Block elements of Group 15 Elements >> Nitric Acid

How is phosphine prepared using the following reagent ?
HCl

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: p-Block elements of Group 15 Elements >> Phosphine

Which of the following is a basic oxide?

(A) SiO2

(B) P4O10

(C) MgO

(D) Al2O3

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: p-Block elements of Group 15 Elements >> Oxides of Nitrogen

The group 15 element having inner electronic configuration as of argon is-

(a) Phosphorous (z = 15)

(b) Antimony (z =51)

(c) Arsenic (z = 33)

(d) Nitrogen (z = 7)

 

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: Concept of Group 15 Elements

Calculate molarity and molality of 6.3% solution of nitric acid having density 1.04 g cm−3
. (H = 1, N = 14, O = 16)

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: p-Block elements of Group 15 Elements >> Nitric Acid

Draw the structure of H4P2O6 hypophosphoric acid

Appears in 1 question paper
Chapter: [7.01] Group 15 Elements
Concept: p-Block elements of Group 15 Elements >> Compounds of Phosphorus
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