Q&A/Class 7/Science

State the condition necessary for the occurrence of any reactant.

Class 7CBSEScienceChapter: Physical and Chemical Changes
👁 13 views👍 0 helpful
For the occurrence of any reaction, the molecules or atoms of the reactants must collide with one another, in order to break old bonds and form new bonds.

🔄Recently Updated

Describe the process of neutralization with the help of an example.

Updated 1/17/2026

Red litmus paper is dipped in a solution; it remains red, what is the nature of the solution?

Updated 1/17/2026

State similarity between aerobic and anaerobic respiration?

Updated 1/17/2026

Apart from rainbow, where else we can see seven colours of sunlight?

Updated 1/17/2026

What are stomata? Explain their function.

Updated 1/17/2026

LIMITED TIME OFFER

Ace Your Exams with
Expert Guidance

Get access to 35 lakh+ verified solutions, video lectures, and personalized study plans

Verified Solutions
Expert Teachers
24/7 Support

Start Your Free Trial

No credit card required. Cancel anytime.

Get Started Free →
Secure & Trusted by 10,000+ Students

By signing up, you agree to our Terms & Privacy Policy

Start learning with 25k+ students around the world.

80+
Online courses
100+
Certified Instructor
99.9%
Success Rate
Rarepillar Education Services Private Limited
© 2025 All Rights Reserved