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HSC Science (General) इयत्ता १२ वी - Maharashtra State Board Important Questions for Chemistry

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What is the action of concentrated sulphuric acid on phosphorous pentachloride

Appears in 1 question paper
Chapter: [7.02] Group 16 Elements
Concept: P - Block Group 16 Elements >> Sulphuric Acid

3.795 g of sulphur is dissolved in 100g of CS2. This solution boils at 319.81 K. What is the molecular formula of sulphur in solution? The boiling point of CS2 is 319.45 K. (Given that Kb for CS2 = 2.42 K kg mol-1 and atomic mass of S = 32)

Appears in 1 question paper
Chapter: [7.02] Group 16 Elements
Concept: P - Block Group 16 Elements >> Sulphur - Allotropic Forms

H2O is liquid while H2S is gas at room temperature. Explain.

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Chapter: [7.02] Group 16 Elements
Concept: P - Block Group 16 Elements >> Compounds of Sulphur

What is the action of concentrated sulphuric acid on copper

Appears in 1 question paper
Chapter: [7.02] Group 16 Elements
Concept: P - Block Group 16 Elements >> Sulphuric Acid

What is the action of concentrated sulphuric acid on potassium chlorate?

Appears in 1 question paper
Chapter: [7.02] Group 16 Elements
Concept: P - Block Group 16 Elements >> Sulphuric Acid

What is the action of dioxygen on Iron

Appears in 1 question paper
Chapter: [7.02] Group 16 Elements
Concept: P - Block Group 16 Elements >> Dioxygen

What is the action of dioxygen on Carbon disulfide

Appears in 1 question paper
Chapter: [7.02] Group 16 Elements
Concept: P - Block Group 16 Elements >> Dioxygen

Write the molecular and structural formulae of Dithionous acid

Appears in 1 question paper
Chapter: [7.02] Group 16 Elements
Concept: P - Block Group 16 Elements >> Oxoacids of Sulphur

Write chemical reactions for different steps in the manufacture of sulphuric acid by lead chamber process. Draw the structure of phosphorous pentachloride

Appears in 1 question paper
Chapter: [7.02] Group 16 Elements
Concept: P - Block Group 16 Elements >> Sulphuric Acid

Explain the following properties of group 16 elements :
1) Electro negativity
2) Melting and boiling points
3) Metallic character
4) Allotropy

Appears in 1 question paper
Chapter: [7.02] Group 16 Elements
Concept: Concept of Group 16 Elements

What are oxides?  Write different types of oxides with one example each.

Appears in 1 question paper
Chapter: [7.02] Group 16 Elements
Concept: P - Block Group 16 Elements >> Simple Oxides

Write structure and molecular formula for the following compounds:
a. Orthophosphoric acid 
b. Sulphurous acid

Appears in 1 question paper
Chapter: [7.02] Group 16 Elements
Concept: P - Block Group 16 Elements >> Sulphuric Acid

Write the formula for pentaamminechlorocobalt (III) sulphate. 

Appears in 1 question paper
Chapter: [7.02] Group 16 Elements
Concept: P - Block Group 16 Elements >> Sulphuric Acid

Write uses of sulphur.

Appears in 1 question paper
Chapter: [7.02] Group 16 Elements
Concept: P - Block Group 16 Elements >> Oxoacids of Sulphur

Write the reaction of conc. H2SO4 with sugar. What is the role of H2SO4 in this reaction?

Appears in 1 question paper
Chapter: [7.02] Group 16 Elements
Concept: P - Block Group 16 Elements >> Sulphuric Acid

Explain anomalous behaviour of oxygen in group 16 with respect to:

  1. Atomicity
  2. Magnetic property
  3. Oxidation state
Appears in 1 question paper
Chapter: [7.02] Group 16 Elements
Concept: P - Block Group 16 Elements >> Anomalous Behaviour of Oxygen

Write two uses of dioxygen.

Appears in 1 question paper
Chapter: [7.02] Group 16 Elements
Concept: P - Block Group 16 Elements >> Dioxygen

Explain the structure of ClF3

Appears in 1 question paper
Chapter: [7.03] Group 17 Elements
Concept: P - Block Group 17 Elements >> Interhalogen Compounds

Iodine exists as

  • polar molecular solid
  • ionic solid
  • nonpolar molecular solid
  • hydrogen bonded molecular solid
Appears in 1 question paper
Chapter: [7.03] Group 17 Elements
Concept: Concept of Group 17 Elements

Draw structure of Chlorine trifluoride

Appears in 1 question paper
Chapter: [7.03] Group 17 Elements
Concept: P - Block Group 17 Elements >> Interhalogen Compounds
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