Advertisements
Advertisements
Question
Name two substances which can sublime.
Advertisements
Solution
Camphor and Naphthalene
APPEARS IN
RELATED QUESTIONS
‘‘The properties of the product are different from those of the constituents''. State whether this statement best describes an element, a compound or a mixture.
Compare the properties of metals and non-metals with respect to
- alleability
- ductility
- electrical conductivity.
Three mixtures A, B and C are obtained by stirring three different solids in water taken in separate beakers. When mixture A is allowed to stand for some time, then its particles settle at the bottom of the beaker. When a beam of light is passed through mixture A in a dark room, the path of light becomes visible when observed from the side of the beaker. When mixture B is allowed to stand for a considerable time, even then its particles do not settle down. Mixture B, however, scatters the beam of light just like mixture A. The particles of mixture C do not settle down on keeping and it also does not scatter a beam of light passing through it.
What are the mixtures like A known as ?
What are the mixtures like B known as ?
What are the mixtures like C known as ?
Name the phenomenon exhibited by A and B which occurs on passing a beam of light through them.
Name one mixture each which is like (i) A (ii) B, and (iii) C.
Name any two solid substances whose mixture can be separated by sublimation.
Give two examples of the following type of mixture.
gas-gas
Give one example of the following type of mixture.
Solid-liquid homogeneous mixture
Give an example of mixtures of two elements
Four atoms of hydrogen combine with one atom of carbon to give methane [CH4]. State the valency of carbon.
Complete the given analogy.
Iron – sulphur mixture : ______:: Mustard seeds from Urad-dhal: Rolling
Suggest separation technique(s) one would need to employ to separate the following mixture.
Kerosene oil, water and salt
