Chemistry
Name the following:
The non-sublimable solid from a mixture of iodine & potassium nitrate.
The heavier liquid component from - mercury & water.
The lower boiling point component from methyl alcohol & water.
The compound containing one atom of sulphur & two atoms of oxygen.
An acid whose formula is 'H2CO3'.
Related Questions
Select the correct answer from A, B, C, D & E for each statement given below:
A: Chalk B: Oxygen C: Silicon D: Bromine E: Nitrous Oxide
An element present in the earth's crust, atmosphere & human body.
The chemical name for dinitrogen oxide [N2O].
A compound containing carbon, oxygen & calcium.
A metalloid.
A non-metal which exists in the liquid state.
Select the correct answer from the choice in bracket.
The least reactive metal. [magnesium/silver/copper].
The positively charged particle of an atom. [electron/proton/neutron].
The formula of caustic soda. [KOH/Ca(OH)2/NaOH].
The ideal method to separate iodine & KCl. [sublimation/evaporation/distillation].
A homogeneous mixture. [brass / dust in air / chalk & water].
Match the ideal method of separation of components in a mixture in List I with the appropriate process in List II.
List I List II 1. Sand from a mixture of sand & water A. Separating Funnel 2. Kerosene from a mixture of kerosene & water B. Sublimation 3. Alcohol from a mixture of methyl alcohol & water C. Filtration 4. Naphthalene from a mixture of naphthalene & lead chloride D. Distillation 5. Pure water from impure water E. Fractional distillation Give reasons for the following statements:
If fractional distillation is carried out using a liquid-liquid mixture, one liquid will remain in the flask & the other will be collected in the receiver.
Evaporation of a common salt solution or sea water, leaves behind common salt inside the evaporating dish after heating.
Components in a mixture are present in varying proportions and not in a fixed proportion.
Gunpowder is an example of a heterogeneous mixture.
In chromatography the absorbent medium e.g. Whatman filter paper is known as the - stationary phase.