Sample Question Paper (First 2 Unit) ISC CLASS XI — ECONOMICS (NEP Pattern)

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ISC CLASS XI — ECONOMICS (NEP Pattern)

Time Allowed: 3 Hours | Maximum Marks: 80

General Instructions:

1. This question paper is divided into three sections: Section A (20 Marks), Section B (30 Marks), and Section C (30 Marks).

2. All questions in Section A are compulsory.

3. Section B contains short-answer questions with internal choices.

4. Section C contains long-answer/case-based questions requiring analytical reasoning.

MODULE 3: STRUCTURAL ORGANIZATION OF PROTEINS | RTU Hojai | Chemistry MD-CHM-2.1

 

MODULE 3: STRUCTURAL ORGANIZATION OF PROTEINS

RTU Hojai — B.Sc. Major Course

Course: Molecules of Life (MD-CHM-2.1)

Biochemistry

Short Notes for quick revision:

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INTRODUCTION TO PROTEIN STRUCTURE

Proteins are among the most important biomolecules present in living organisms. They perform numerous functions such as enzymatic catalysis, transport, defense, hormonal regulation, muscle contraction, and structural support. The biological activity of a protein depends directly upon its three-dimensional structure.

A protein is made up of amino acids linked together by peptide bonds forming long chains called polypeptides. These polypeptide chains fold into specific structures that determine their functions.

 

CENTROID OF COMPLEX GEOMETRIC FIGURES:

 

Centroid of One-Dimensional and Two-Dimensional Bodies

Concept, Theory, Derivation, Applications and Advanced Cases

The concept of Centroid is one of the most important ideas in Engineering Mechanics, Strength of Materials, Structural Engineering, Machine Design and Fluid Mechanics.

Whenever we deal with beams, plates, laminae, sections, bending stresses, moments of inertia, or stability problems, the centroid becomes fundamental.

In this article, we shall discuss:

1. One Dimensional (1D) Objects

2. Two Dimensional (2D) Objects

3. Concept of Resultant Area

4. Mathematical Derivation of Centroid

5. Varignon’s Theorem of Moments

6. Centroid of Composite Figures

7. Centroid of Curves and Lines

8. Symmetry Conditions

9. Centroid of Common Geometrical Shapes

10. Negative Areas (Removed Portions)

11. Centroid by Integration

12. Applications of Centroid

13. Relationship Between Centroid and Moment of Inertia

14. Parallel Axis Theorem

15. Practical Engineering Examples

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Class 7 Mathematics Large numbers

 

Ganita Prakash Study Guide

Module 1: Mastering Large Numbers & Place Value

Welcome to your comprehensive study material for Chapter 1 of the NCERT Ganita Prakash textbook: Large Numbers Around Us. This guide is designed to help you master the concepts of large numbers, understand how they behave, and develop a strong spatial and logical sense of their scale.

MULTIPLE CHOICE QUESTIONS: ENGINEERING MECHANICS

ENGINEERING MECHANICS & STRENGTH OF MATERIALS – MCQ THINKING GUIDE

Edunes Online Education

🧠 Strategy: First understand the physical principle → Then eliminate wrong options → Then confirm formula.

Q1) In a simply supported beam of length L, a UDL of w kN/m acts on the entire span. The maximum bending moment will be:

a) wL²/8
b) wL³/8
c) wL²/4
d) wL³/4