MCQ - CBSE Class 9 Science State any two conditions essential for being free of disease. 10/04/2023 Ajit kumar 95 Views 0 Comments Read more
MCQ - CBSE Class 9 Science State any two conditions essential for good health. 10/04/2023 Ajit kumar 85 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Multiple Choice Questions 10/04/2023 Ajit kumar 85 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Why is the ceiling and wall behind the stage of good conference halls or concert halls made curved ? 10/04/2023 Ajit kumar 76 Views 0 Comments Read more
MCQ - CBSE Class 9 Science If any explosion takes place at the bottom of a lake, what type of shock waves in water will take place ? 10/04/2023 Ajit kumar 61 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Why do we hear the sound produced by the humming bees while the sound of vibrations of pendulum is not heard? 10/04/2023 Ajit kumar 93 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Sound made in front of a tall building 18 m away is repeated. Name the phenomenon and briefly explain it. 10/04/2023 Ajit kumar 88 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Will the sound be audible if the string is set into vibration on the surface of the moon? Give reason for your answer. 10/04/2023 Ajit kumar 69 Views 0 Comments Read more
MCQ - CBSE Class 9 Science How does a stretched string on being set into vibration, produce the audible sound? 10/04/2023 Ajit kumar 68 Views 0 Comments Read more
MCQ - CBSE Class 9 Science Mention one practical use of echoes. 10/04/2023 Ajit kumar 79 Views 0 Comments Read more