Use app×
Ask a Question
QUIZARD
QUIZARD
JEE MAIN 2026 Crash Course
NEET 2026 Crash Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE

A system absorbs 640 J heat and does work of 260 J, the change in internal energy of the system will be :

← Prev Question Next Question →
0 votes
221 views
in Chemistry by (90.6k points)
closed by
A system absorbs 640 J heat and does work of 260 J, the change in internal energy of the system will be :
A. `+380J`
B. `-380J`
C. `+900J`
D. `-900J`
Challenge Your Friends with Exciting Quiz Games – Click to Play Now!

1 Answer

0 votes
by (92.5k points)
selected by
 
Best answer
Correct Answer - B
The system has been given internal energy of 640 J and the work system does on surroundings is 260 J.
Therefore, by first law of thermodynamics the internal energy of system increases by
`-q=DeltaU-W=(-640+260)=-360J`
← Prev Question Next Question →

Find MCQs & Mock Test

  1. JEE Main 2026 Test Series
  2. NEET Test Series
  3. Class 12 Chapterwise MCQ Test
  4. Class 11 Chapterwise Practice Test
  5. Class 10 Chapterwise MCQ Test
  6. Class 9 Chapterwise MCQ Test
  7. Class 8 Chapterwise MCQ Test
  8. Class 7 Chapterwise MCQ Test

Related questions

+1 vote
1 answer
Draw a labelled figure of the V.S. of human eye.
asked Jan 6, 2021 in Biology by SaniyaRastogi (90.6k points)

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

User Contribution to Sarthaks eConnect
Managed by Sarthaks Digitizing India
...