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प्रश्न
Which among the following ______ will get attracted to by magnet?
विकल्प
safety pins
pencil
rubber band
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उत्तर
Which among the following safety pins will get attracted to by magnet?
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संबंधित प्रश्न
Which of the following is a mixture ?
Salt, Air, Water, Alum, Sugar
State two physical properties on the basis of which metals can be distinguished from non-metals.
What are the three general classes of matter ? Give one example of each type.
Classify the following into true solutions and colloidal solutions:
Ink, Salt solution, Starch solution, Blood, Sugar solution
Which of the following can be called a suspension ?
Name the property of one of the constituents which can be used to separate a mixture of salt and iodine
How will you separate a mixture containing sand and sugar ?
What is chromatography ? State its two applications.
How is water purified on a large scale at water works ? Explain with the help of a labelled diagram. Name the substance which is added to kill germs in the drinking water supply ?
The liquid air has three components X, Y and Z whose boiling points are : –186°C, –183°C and –196°C,
respectively. When liquid air is fed into a tall fractional distillation column from near its bottom and warmed
up slowly :
(a) Which component will be collected from near the bottom of the fraction distillation column ? Why ?
(b) Which component will be collected from the top part of the fractional distillation column ? Why ?
(c) Which component will be collected from the middle part of the fractional distillation column ? Why ?
(d) What could the component X, Y and Z be ?
