Edzy
AI TutorResourcesToolsCompareBuy
SearchDownload AppLogin
Edzy

Edzy for Classes 6-12

Edzy is a personal AI tutor for CBSE and State Board students, with curriculum-aligned guidance, practice, revision, and study plans that adapt to each learner.

  • Email: always@edzy.ai
  • Phone: +91 96256 68472
  • WhatsApp: +91 96256 68472
  • Address: Sector 63, Gurgaon, Haryana

Follow Edzy

Browse by Class

  • CBSE Class 6
  • CBSE Class 7
  • CBSE Class 8
  • CBSE Class 9
  • CBSE Class 10
  • CBSE Class 11
  • CBSE Class 12
Explore the CBSE resource hub

Explore Edzy

  • Study Resources
  • Free Study Tools
  • Best Apps for Board Exams
  • Edzy vs ChatGPT
  • About Us
  • Why We Built Edzy
  • Blog
  • CBSE AI Tutor

Support & Legal

  • Help & FAQs
  • Accessibility
  • Privacy Policy
  • Terms & Conditions
  • Refund Policy
  • Cookie Policy
  • Site Directory

© 2026 Edzy. All rights reserved.

Curriculum-aligned learning paths for students in Classes 6-12.

T
Question Practice

In which scenario is the enthalpy change (∆rH) of a reaction positive?

Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.

MCQ_SA
CBSE
Class 11
Chemistry
Chemistry Part - I
Thermodynamics
Question Bank

In which scenario is the entha...

Single Answer MCQ
Q-00054810

In which scenario is the enthalpy change (∆rH) of a reaction positive?

1

The reaction releases heat.

2

The reaction absorbs heat.

3

The reaction occurs at high pressure.

4

The reaction involves only solids.

Previous QuestionNext Question

Video Explanation

Answer

Solution:

Watch Video Solution

Login to get access

Keep Practising

Students who asked this also explored

Continue with nearby questions to strengthen the same chapter concept while you still have the context fresh in mind.

Q1.

What is the change in internal energy when no heat is added to the system, but work is done on it?

Single Answer MCQ
View explanation
Q2.

If a system does work on its surroundings and no heat is exchanged, what equation describes the change in internal energy?

Single Answer MCQ
View explanation
Q3.

When heat is removed from a system and no work is done, what can be said about the change in internal energy?

Single Answer MCQ
View explanation
Q4.

What type of wall would a system have if it cannot exchange heat but can do work?

Single Answer MCQ
View explanation