CBSE Class 9 - Science - CH 4 - STRUCTURE OF THE ATOM
STRUCTURE OF THE ATOM Bohr Model NCERT Solutions- Q & A Q1(CBSE 2011): Name the fundamental particle not present in the nucleus of hydrogen atom Answer: Neutron Q2: Who discovered electro
Category: class9 science
Diversity In Living Organisms - CBSE - Class 9 - Science (CH7)
DIVERSITY IN LIVING ORGANISMS (NCERT Solutions- Q & A ...) Q1(CBSE 2011): What do you mean by biodiversity? Answer: Biodiversity means the existence of a wide variety of species or other
CBSE Notes
CBSE Class 9 - Science - CH 12 - Sound (Worksheet)
SOUND Worksheet RADAR works on which principle? Fill in the blanks 1. When we hear music- the medium through which the sound transmitted is __________ (solid- liquid- gas) 2. If a body re
CBSE Notes
CBSE Class 9 - Science - Why do we Fall ill? (MCQs)
Why do we Fall ill? (MCQs) Q1: Which one of the following is an infectious disease? (a) diptheria (b) diabetes (c) hypertension (d) cancer Q2: Elephantiasis disease can have (a) short-t
CBSE Notes
CBSE Class9 - Science - CH11 - Work and Energy
WORK AND ENERGY NCERT Solutions and Q & A Q1: A roller coaster is shown in figure- at points i.e. ➊ and ➋- comparatively at what point (i) potential energy is maximum (ii) kineti
CBSE Notes
Video
