Gases are the lightest form of matter and their densities are expressed in term of:

An atom having six electron in the valence shell will achieve noble gases electronic  configuration by

Pb(BaSO4)/Quinoline is the formula of:-

Dolomite is a carbonate of Ca and___:-

The volume occupied by the 2.0 g of Ne at STP:-

Which is the configuration of Cr:-

The formula of bleaching powder is

When bromomethane is hydrolyzed by aqueous NaOH solution which ion bring about the first stage of substitution:-

Which is correct answer according to rule of significant figure : 40×25.6×0.226

The solvent or mixture of solvent used for separation of compound is called:-

The chemical formula of washing soda is:

Spin quantum number was given by:-

Ethanol can be converted in ethanoic acid by:-

A single chlorine molecule can destroy how many ozone molecule:-

Aldol compound consist of;-

pH of a neutral solution is always

Ozone depletion is due to the reaction of ozone with:-

 In which of the following steps of respiration, CO₂ is produced?

Which element is analyzed by AAS:-

Colorof flame of sodium is:

Which compound is not known:-

How many electrons are present in the valence shell of phosphorus in PCl3:-

Which is used at the tip of the match sticks:-

Pb2+ in paper chromatography are located by using:-

The pH value of acid rain is in the range of:-