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Important Questions for ISC (Commerce) Class 12 - CISCE

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Define terms: Fuel cell

Appears in 13 question papers
Chapter: [6.02] Galvanic cells, mechanism of current production in a galvanic cell;
Concept: Batteries > Primary Batteries

Write two important advantages of reflecting telescope over a refracting telescope.

Appears in 12 question papers
Chapter: [6.01] Ray Optics and Optical Instruments
Concept: Optical Instruments > Telescope

Give the truth table and circuit symbol for NAND gate

Appears in 10 question papers
Chapter: [9] Electronic Devices
Concept: Digital Electronics and Logic Gates

Write the equations involved in the following reactions : Reimer – Tiemann reaction

Appears in 6 question papers
Chapter: [12.03] Distinction between primary, secondary and tertiary alcohols
Concept: Chemical Reactions of Phenols (Only)

Explain any four characteristics of 'principles of management.'

Appears in 6 question papers
Chapter: [3.04] Principles of Management
Concept: Concept of Principles of Management

Identify the part of the electromagnetic spectrum which is suitable for radar system used in aircraft navigation.

Appears in 6 question papers
Chapter: [5] Electromagnetic Waves
Concept: Electromagnetic Spectrum

State Henry’s law.

Appears in 5 question papers
Chapter: [1.01] Raoult's law and colligative properties
Concept: Solubility > Solubility of a Gas in a Liquid

Draw a labelled ray diagram showing the formation of a final image by a compound microscope at least distance of distinct vision

Appears in 5 question papers
Chapter: [6.01] Ray Optics and Optical Instruments
Concept: Optical Instruments > The Microscope

State de Broglie hypothesis

Appears in 5 question papers
Chapter: [7] Dual Nature of Radiation and Matter
Concept: de-Broglie Relation

Mention any three characteristics of Neanderthal man that lived in near east and central Asia.

Appears in 4 question papers
Chapter: [2.03] Evolution
Concept: Origin and Evolution of Man

On the basis of crystal field theory, write the electronic configuration for d4 ion if ∆0 < P.

Appears in 4 question papers
Chapter: [0.07] Coordination Compounds
Concept: Bonding in Coordination Compounds > Crystal Field Theory (CFT)

Account for the following :

Zn is not considered as a transition element.

Appears in 4 question papers
Chapter: [0.1] Chemistry of Transition and Inner-Transition Elements: d-Block: 3d, 4d and 5d series f-Block: 4f and 5f series
Concept: General Properties of the Transition Elements (D-block)

Define azeotropes. 

Appears in 4 question papers
Chapter: [1.01] Raoult's law and colligative properties
Concept: Vapour Pressure of Liquid Solutions > Vapour Pressure of Liquid- Liquid Solutions

Write the chemical equations to illustrate the following name reactions : Rosenmund reduction

Appears in 4 question papers
Chapter: [14.02] Acid derivatives
Concept: Aldehydes and Ketones > Preparation of Aldehydes
 

If y = xx, prove that `(d^2y)/(dx^2)−1/y(dy/dx)^2−y/x=0.`

 
Appears in 4 question papers
Chapter: [3.02] Applications of Derivatives
Concept: Simple Problems on Applications of Derivatives

Show that the altitude of the right circular cone of maximum volume that can be inscribed in a sphere of radius r is `(4r)/3`. Also find maximum volume in terms of volume of the sphere

Appears in 4 question papers
Chapter: [3.02] Applications of Derivatives
Concept: Maxima and Minima

Find : `int(x+3)sqrt(3-4x-x^2dx)`

Appears in 4 question papers
Chapter: [3.03] Integrals
Concept: Methods of Integration - Integration by Substitution

Draw a labeled diagram of a mature embryo sac.

Appears in 3 question papers
Chapter: [1.03] Human Reproduction
Concept: Embryo Development Upto Blastocyst Formation

State any three goals of the human genome project

Appears in 3 question papers
Chapter: [2.02] Molecular Basis of Inheritance
Concept: Human Genome Project

Name the causative organism and preventive measures for Typhoid

Appears in 3 question papers
Chapter: [3.01] Human Health and Diseases
Concept: Infectious and Non Infectious Disease
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