Question

science annual question paper of 9th standard​

Answer 1

Answer:

CBSE Class 9 Science Important Questions & Answers for Annual Exam 2020. In this article you will get a set of important questions for CBSE Class 9 Science Exam 2020. Questions have been designed as per the latest exam format. All the questions are completely solved to help make learning simple and effective.

Answer 2

$\bf{\underline{\underline \green{AnswEr:-}}}$

When heat is constantly supplied by a burner to boiling water, then the temperature of water during vaporisation:

(a) Rises very slowly

(b) Rises rapidly until steam is produced

(c) First rises and then becomes constant

(d) Does not rise at all

• Correct answer option (D)