Ask a Teacher

Search

CBSE / Chemistry Questions

Total Questions 1082
is all combination reaction an exothermic reaction and all decomposition reaction a thermal decomposition?
why is ice at 273k more effective in cooling than water at the same temperature
sir,can you please explain the technique of chromatography?also describe how can we separate coloured components of an ink?
what happens when a beam of light is passed through a colloidal solution ?
Sir, How can we separate a mixture of two miscible liquids?
saloni took a piece of burning charcoal and collected the gas evolved in a test tube. how will she find the nature of the gas?
what is decantation ?
what is the enamel of tooth made up of? calcium phosphate or calcium carbonate? in some textbooks it is caco3 . which one is true?
what are poly-culture & arboriculture ?
what is atom?
Is copper sulphate a salt?
What is LNG and GHG?
what is 3d,4d,5d transition series ?
is copper sulphate a base
what are colloids?
which is the liqefied metal that expands on solidification ?
WHAT IS THE DIFFERENCE BETWEEN DISPLACEMENT AND DOUBLE DISPLACEMENT?
what is benzyl chloride?
chemical properties of non metals
what are the steps of limiting reagent