physics 2

i) Ethanol has a pleasant odour whereas ethanoic acid has a smell of vinegar. Ethanol has a burning taste while ethanoic acid has a sour taste. ii) Ethanol is neutral to litmus while ethanoic acid turns blue litmus paper to red. Ethanol gives no brisk effervescence with NaHCO 3 , while e..

1. Science. Science means "to know". It is a systematic way of acquiring knowledge about the surroundings by careful observations and experimentations over a period of time. 2. Physics. Study of nature and natural phenomena, put in an organised way in various subtopics..

1. Physical state : Pure acetic acid is a colourless liquid. 2. Odour : Characteristic pungent smell. 3. 3oiling point: It boils at 118C...

1) The boiling points of haloalkanes are in the order RF < RC1 < RBr < RI, The change in physical state is due to increase in van der Waal's forces between the molecules. These forces increase with increase in molecular mass. 2) Among the isomeric alkyl halid..

Physical Properties 1. Sulphur is a pale yellow solid. 2. It exists in different allotropic forms. 3. It is insoluble in water but soluble in carbon disulphide. 4. It melts at 114 C and boils at 444C 5. It does not conduct heat or electricity. Sulphur e..

Most of the non-metals exist in two of the three states of matter at room temperature: gases (oxygen) and solids (iodine, carbon, sulphur). These have no metallic lustre,( except iodine) and do not reflect light.(Except carbon in the form of diamond)..

(i) Sodium carbonate is white, crystalline substance. The common washing soda has the molecular formula Na 2 CO y 10 H 2 0. It is an efflorescent substance losing its water on crystallisation, when exposed to air, changing into an anhydrous, white powder. This is t..

Aluminium possesses a bluish white lustre. It is a light metal of density 2.7. It is malleable and ductile. It melts at 933 K and boils at 2740 K. It is a good conductor of heat and electricity. It is amphoteric and corrosion resistant..

(i) Acetic acid is a colourless liquid (boiling point 118C) with a sharp 'vinegar odour' and sour taste. (ii) It is miscible with water, ethyl alcohol and ether in all proportions. (iii) When cooled sufficiently, it forms 'ice like' ciystals which melt at 16.7C. Hence the pure anhydrous aci..

1) Among aliphatic amines, lower members are gases while higher members are liquids. Among aryl amines, the lower members are liquids while higher members are solids...