Chemistry Study Material

Q.The chemical name of tear gas is?     A.Benzonophenone     B.Acetophenone     C.∝- bromo acetophenone     D.∝- chloro acetophenone Answer:-D Q.2 The detergent is a        A.Soap        B.Catalyst        C.Drug        D.Highly fatty acids of oil Answer:-D

1.What do you call an atom that has more protons than electrons?     A.a molecule     B an isotope     C.an anion     D.a cation. Answer :-a cation Explane :-If an atom has more protons than electrons, it has a net positive charge. This is a cation, which you can remember because the "t" in cation resembles a "+" sign for positive. 2.A drop of food coloring spreading out in a cup of water is an example of which transport process?   A.Diffusion     B.Osmosis     C.Vapor Pressure     D.Effusion     Answer :-Diffusion Explane :-Food coloring dispersing in water is an example of diffusion. Osmosis involves water, but there has to be a semipermeable membrane, too.  3.A mole contains Avogadro's number of items. What is Avogadro's number? A.6023 B.6.023 x 10^23 C.6.02 x 10^-23 D.3 x 10^8 Answer :-6.023x10^23 Explane :-Avogadro's number i s huge! The reason chemists use 6.02 x 10^23 to define a unit is t

1.Three of the most common states of matter are solids, liquids, and gases. A liquid has: A.a defined volume, but not a defined shape B.a definite shape, but no defined volume C.a definite volume and shape D.no defined volume or shape Answer :-A defined volume,but not a defined shape Explane :-A liquid takes the shape of its container (no defined shape), but has a fairly constant volume (at least compared to a gas). The state of matter of a substances is due to the kinetic energy of its components. With enough energy, atoms and molecules are less strongly bound to each other. Detail study - Solid state-csirugcnetstudymaterial.blogspot.com/2018/02/crystal-system-and-lattices.html