435 public questions tagged with this topic.
Interstitial compounds have high melting points, not low melting points.
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Applications of d and f Block Elements
Lanthanoids are used in alloys, catalysts, and phosphors, but not as primary structural materials.
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Applications of d and f Block Elements
Transition metals form interstitial compounds, not intermetallic compounds (alloys are different).
Ref: NCERT Class 12 Chemistry > Chapter 4: d and f Block Elements > Topic: Applications of d and f Block Elements
Overall order = 0.5 + 0.5 = 1.
Ref: NCERT Class 12 Chemistry > Chapter 3: Chemical Kinetics > Topic: Integrated Rate Equations - First Order Reactions and Half-life
t½ = 0.693/0.0346 ≈ 20 min.
Ref: NCERT Class 12 Chemistry > Chapter 3: Chemical Kinetics > Topic: Integrated Rate Equations - First Order Reactions and Half-life
t½ = 1/(0.02×0.5) = 100 s.
Ref: NCERT Class 12 Chemistry > Chapter 3: Chemical Kinetics > Topic: Integrated Rate Equations - First Order Reactions and Half-life
t½ = 1/(k[A]₀) = 1/(0.02×0.5) = 100 min.
Ref: NCERT Class 12 Chemistry > Chapter 3: Chemical Kinetics > Topic: Integrated Rate Equations - First Order Reactions and Half-life
t½ = 0.693/0.0346 ≈ 20 min.
Ref: NCERT Class 12 Chemistry > Chapter 3: Chemical Kinetics > Topic: Integrated Rate Equations - First Order Reactions and Half-life
2ⁿ = 1.414 ≈ √2 → n = 0.5.
Ref: NCERT Class 12 Chemistry > Chapter 3: Chemical Kinetics > Topic: Integrated Rate Equations - First Order Reactions and Half-life
Molarity = (Moles of solute/Volume in liters) . Moles = Molarity × Volume = 0.2 mol/L × 0.5 L = 0.1 mol .
Ref: NCERT Class 12 Chemistry > Chapter 1: Solutions > Topic: Solubility - of Solids and Gases in Liquids Henry's Law
Total mass of solution = 25 g + 75 g = 100 g. Mass % = (Mass of solute/Total mass) × 100 = (25/100) × 100 = 25% .
Ref: NCERT Class 12 Chemistry > Chapter 1: Solutions > Topic: Solubility - of Solids and Gases in Liquids Henry's Law
Explanation extracted from page source.
Ref: NCERT Class 11 Chemistry > Chapter 9: Hydrocarbons > Topic: Directive Influence and Carcinogenicity and Uses
