alleryStart learning →Avogadro's number equals:
- 6.022 × 10²³
- 6.022 × 10²²
- 6.022 × 10²⁴
- 6.022 × 10²⁵
Show answer and solution
Correct answer: A. 6.022 × 10²³
One mole of any substance contains 6.022 × 10²³ particles.
This is Avogadro's number.
DSSSB TGT Class9 Matter Basics — practice questions
Explore 2 free Class9 Matter Basics questions in DSSSB TGT Science. Open each question or exercise to read its content, reference answers and available explanation.
Practise Class9 Matter Basics with Quill →Class9 Matter Basics questions and exercises with answers
Showing questions 1–2 of 2.
Worked practice questions
A compound differs from a mixture because:
- It has more atoms
- Its components are chemically bonded
- It is always solid
- Its components are different sizes
Show answer and solution
Correct answer: B. Its components are chemically bonded
A compound is two or more elements chemically bonded in fixed ratio
a mixture is physically combined and separable by physical means.
How to practise
- Choose a Class9 Matter Basics question and try to work out your answer.
- Open the question to check the correct answer and read its worked solution.
- Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.