Molecular crystals
Among the below shown which crystal will be soft and have low melting point: (a) Covalent (b) Ionic (c) Metallic (d) MolecularAnswer: (d) Molecular crystals are soft and have low melting point.
Presence of small concentrations of appropriate electrolyte is necessary to stabilize the colloidal solutions. However, if the electrolytes are present in higher concentration, then the ions of the electrolyte neutralize the charge on the colloidal particles may unite
What is the basic difference among hcl gas and hcl acid? Briefly state the difference?
Superphosphate has the formulae: CaH4 (PO4)2H2). Calculate the percentage of phosphorus in this chemical. Show your calculations (around ten lines); also Work out how to make up a nutrient mixtur
What do you mean by the term tripod? Also state its uses?
These types of polymers are formed as a result of condensation reaction between monomer units. Some common examples are being discussed here: 1. Polyesters Q : What do you mean by the term alum What What do you mean by the term alum? Also illustrate its uses?
What do you mean by the term alum? Also illustrate its uses?
Relative humidity is the ratio of the partial pressure of water in air to the partial pressure of water in air saturated with water at the same temperature, stated as a percentage: Relative = Q : 6. 20 gm of hydrogen is present in 5 6. 20 gm of hydrogen is present in 5 litre vessel. The molar concentration of hydrogen is
6. 20 gm of hydrogen is present in 5 litre vessel. The molar concentration of hydrogen is
What do you mean by the term Organic Chemistry? Briefly define the term?
Choose the right answer from following. The molarity of pure water is: (a) 55.6 (b) 5.56 (c)100 (d)18
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