Atoms and Molecules — Science STD 9 — Question

The lightest element is ________. (Hydrogen, Helium, Lithium)

The junction of two neurons is called _________. (Synapse, Node of Ranvier, Myelin sheath)

In order that the force of gravitation between two bodies may become noticeable and cause motion, one of the bodies must have an extremely large ______.

If the nucleus of an atom has atomic number 17, mass number 37 abd there are 17 electrons outside the nucleus, the number of neutrons in it is ____________.

An ostrich egg is the _________ animal cell. (Smallest, Largest, Medium-sized)

The acceleration due to gravity on the moon is about ______ of that on the earth.

Lining of the small intestine is made up of ____________. (Columnar epithelium, Squamous epithelium, Cuboidal epithelium)

The speed of sound in a solid is __________ than the speed of sound in air. (Lesser, Greater, Equal)

Bone possesses a hard matrix composed of _________ and Minerals. (Proteins, Carbohydrates, Water)

Immiscible liquids are separated by using a ________. (Separating funnel, Filtration, Distillation)