HSC Science (Electronics) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions

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Define boiling point

[0.02] Solutions and Colligative Properties
Chapter: [0.02] Solutions and Colligative Properties
Concept: Types of Solutions

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

[7.01] Group 15 Elements
Chapter: [7.01] Group 15 Elements
Concept: Concept of Group 15 Elements

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Iodine exists as

  • polar molecular solid
  • ionic solid
  • nonpolar molecular solid
  • hydrogen bonded molecular solid
[7.03] Group 17 Elements
Chapter: [7.03] Group 17 Elements
Concept: Concept of Group 17 Elements

Illustrate with example, the difference between a double salt and a co-ordination compound

[0.09] Coordination Compounds
Chapter: [0.09] Coordination Compounds
Concept: Coordination Compounds > Introduction

What are ketones? 

[0.12] Aldehydes, Ketones and Carboxylic Acids
Chapter: [0.12] Aldehydes, Ketones and Carboxylic Acids
Concept: Introduction of Aldehydes, Ketones and Carboxylic Acids

What are ketones? 

[12.01] Aldehydes and Ketones
Chapter: [12.01] Aldehydes and Ketones
Concept: Introduction of Aldehydes, Ketones and Carboxylic Acids

Define antioxidants?

[16.02] Chemicals in Food
Chapter: [16.02] Chemicals in Food
Concept: Chemicals in Food - Artificial Sweetening Agents and Food Preservatives

Draw structure of BHT.

[16.02] Chemicals in Food
Chapter: [16.02] Chemicals in Food
Concept: Chemicals in Food - Artificial Sweetening Agents and Food Preservatives

What are f-block elements? 

[8.02] F-block Elements
Chapter: [8.02] F-block Elements
Concept: F-block Elements > General Indroduction

Define Broad-spectrum antibiotics with a suitable example?

[16.01] Chemicals in Medicines
Chapter: [16.01] Chemicals in Medicines
Concept: Drugs and Their Classification

What are vitamins?

[14.03] Vitamins
Chapter: [14.03] Vitamins
Concept: Introduction of Vitamins

Write the structure of a nucleoside

[14.04] Nucleic Acids
Chapter: [14.04] Nucleic Acids
Concept: Introduction of Nucleic Acids

Which of the following NOT present in DNA?

(a)  adenine                        

(b) Guanine

(c) Thymine

(d) Uracil

[14.04] Nucleic Acids
Chapter: [14.04] Nucleic Acids
Concept: Introduction of Nucleic Acids

The element that does NOT exhibit allotropy is

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

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

[7.01] Group 15 Elements
Chapter: [7.01] Group 15 Elements
Concept: Concept of Group 15 Elements

Explain with examples, branched and linear polymers.

[0.15] Polymers
Chapter: [0.15] Polymers
Concept: Introduction of Polymers

Define carbohydrates.

[14.01] Carbohydrates
Chapter: [14.01] Carbohydrates
Concept: Introduction of Carbohydrates

What are biodegradable polymers and non-biodegradable polymers? Write ‘one example’ of each.

[0.15] Polymers
Chapter: [0.15] Polymers
Concept: Introduction of Polymers

Explain cationic detergents.

[16.03] Cleansing Agents
Chapter: [16.03] Cleansing Agents
Concept: Cleansing Agents - Soaps

Define Average rate of reaction.

[0.05] Chemical Kinetics
Chapter: [0.05] Chemical Kinetics
Concept: Rate of a Chemical Reaction
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