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HSC Science (General) 12th Standard Board Exam - Maharashtra State Board Important Questions

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State Kohlrausch’s law of independent migration of ions.

Appears in 6 question papers
Chapter: [4] Electrochemistry
Concept: Conductance of Electrolytic Solutions >> Variation of Conductivity and Molar Conductivity with Concentration

The following data were obtained during the first order thermal decomposition of SO2Cl2 at a constant volume :

SO2Cl2 (g) → SO2 (g) + Cl2 (g)

Experiment Time/s–1 Total pressure/atm
1 0 0.4
2 100 0.7

Calculate the rate constant.

(Given : log 4 = 0.6021, log 2 = 0.3010)

Appears in 6 question papers
Chapter: [5] Chemical Kinetics
Concept: Factors Influencing Rate of a Reaction

Account for the following : Nitrogen does not form pentahalide.

Appears in 6 question papers
Chapter: [7.01] Group 15 Elements
Concept: Group 15 Elements - The Nitrogen Family >> Dinitrogen

‘कवि ने कनुप्रिया के माध्यम से आधुनिक मानव की व्यथा को शब्दबद्ध किया है’, इस कथन को स्पष्ट कीजिए। 

Appears in 6 question papers
Chapter: [13] विशेष अध्ययन : कनुप्रिया
Concept: कनुप्रिया

‘शोध’ कथेच्या नायिकेचे स्वभावचित्र तुमच्या शब्दांत रेखाटा.

Appears in 6 question papers
Chapter: [3.01] शोध
Concept: शोध

Derive the mathematical expression for law of radioactive decay for a sample of a radioactive nucleus

Appears in 6 question papers
Chapter: [15] Structure of Atoms and Nuclei
Concept: Law of Radioactive Decay

Derive the mathematical expression for law of radioactive decay for a sample of a radioactive nucleus

Appears in 6 question papers
Chapter: [18] Atoms, Molecules and Nuclei
Concept: Law of Radioactive Decay

Describe the structure of a nucleosome.

Appears in 5 question papers
Chapter: [4] Molecular Basis of Inheritance
Concept: Packaging of DNA Helix

What is ecological succession?

Appears in 5 question papers
Chapter: [14] Ecosystems and Energy Flow
Concept: Biotic or Ecological Succession

Explain the carbon cycle with the help of a simplified model.

Appears in 5 question papers
Chapter: [14] Ecosystems and Energy Flow
Concept: Biogeochemical Cycles (Nutrient Cycles)

State Henry’s law.

Appears in 5 question papers
Chapter: [2] Solutions and Colligative Properties
Concept: Solubility >> Solubility of a Gas in a Liquid

Define limiting molar conductivity.

Appears in 5 question papers
Chapter: [4] Electrochemistry
Concept: Conductance of Electrolytic Solutions >> Variation of Conductivity and Molar Conductivity with Concentration

Distinguish between Order and Molecularity of reaction.

Appears in 5 question papers
Chapter: [6] Chemical Kinetics
Concept: Molecularity of Elementary Reactions

Distinguish between lanthanoid and actinoids.

Appears in 5 question papers
Chapter: [8] Transition and Inner Transition Elements
Concept: F-block Elements >> The Actinoids

Account for the following:

Zn is not considered as a transition element.

Appears in 5 question papers
Chapter: [8.01] D-block Elements
Concept: General Properties of the Transition Elements (d-block)

Distinguish between lanthanoid and actinoids.

Appears in 5 question papers
Chapter: [8.02] F-block Elements
Concept: F-block Elements >> The Actinoids

Explain the term Antiseptics

Appears in 5 question papers
Chapter: [16.01] Chemicals in Medicines
Concept: Classification of Drugs

State and explain the ‘law of demand’ with its exceptions.

Appears in 5 question papers
Chapter: [1.03] Analysis of Demand and Elasticity of Demand
Concept: Demand Curve

Distinguish between Desire and Demand.

Appears in 5 question papers
Chapter: [1.03] Analysis of Demand and Elasticity of Demand
Concept: Concept of Demand

State and explain the ‘law of demand’ with its exceptions.

Appears in 5 question papers
Chapter: [3.1] Demand Analysis
Concept: Demand Curve
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