NCERT Class 10 Science Focus and Purpose
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Questions and Answers

What is the main focus of Ncert class 10 science?

  • Studying the history of science
  • Exploring fundamental scientific principles (correct)
  • Understanding ancient civilizations
  • Learning advanced mathematics concepts

Which type of knowledge is emphasized in Ncert class 10 science?

  • Historical events
  • Practical and applied knowledge (correct)
  • Literary analysis
  • Philosophical wisdom

What is the purpose of Ncert class 10 science?

  • Enhancing linguistic proficiency
  • Developing artistic skills
  • Promoting religious studies
  • Cultivating critical thinking and analytical abilities (correct)

Which type of chemical reaction involves the breaking down of one or more complex substances into simpler substances?

<p>Decomposition reaction (A)</p> Signup and view all the answers

What type of reaction occurs when one element replaces another element in a compound?

<p>Single displacement reaction (C)</p> Signup and view all the answers

In an exothermic chemical reaction, what is the characteristic of heat?

<p>Released (B)</p> Signup and view all the answers

In a balanced chemical equation, why is it important to ensure that the number of atoms of each element is the same on both sides of the equation?

<p>To guarantee that the reaction will proceed until all reactants are converted into products (A)</p> Signup and view all the answers

Which type of chemical reaction involves the joining of two or more simple substances to form a more complex substance?

<p>Synthesis reaction (B)</p> Signup and view all the answers

What is the role of rate laws in describing the relationship between the rate of a reaction and the concentrations of the reactants?

<p>To provide a mathematical expression for the rate of a reaction (D)</p> Signup and view all the answers

What does the equilibrium constant (K) measure in a chemical reaction?

<p>The ratio of the concentrations of products to the concentrations of reactants at equilibrium (B)</p> Signup and view all the answers

According to the second law of thermodynamics, what determines the direction of a chemical reaction?

<p>The change in entropy (B)</p> Signup and view all the answers

What does chemical kinetics study in relation to chemical reactions?

<p>The rates and factors affecting the rates of reactions (B)</p> Signup and view all the answers

How can understanding reaction rates be used to optimize chemical reactions?

<p>By controlling factors such as temperature and concentration to improve yield (D)</p> Signup and view all the answers

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