Pure substances and mixtures - how are they different? - class-VIII
Description: pure substances and mixtures - how are they different? | |
Number of Questions: 26 | |
Created by: Vinaya Modi | |
Tags: composition of matter element, compound and mixture pure substances and mixtures: separation of mixtures chemistry matter around us methods of separation is matter around us pure the nature of matter is matter pure elements, compounds and mixtures structure of matter and molecule |
In which of the following compounds resonance does not occur
(i) ${H _2}O$
(ii) $Si{O _2}$
(iii) $S{O _3}$
(iv) $C{O _2}$
Which of the following is/are example(s) of mixtures?
A compound is always ______ whereas a mixture is :
Which of the following is a pure gas?
Which of the following obey the law of constant proportions in their formation?
Among the following, which is\are the difference between compound and mixture?
_____is chemically mixed whereas____is physically combined.
Which of the following is not a property of mixtures?
Which of the following methods can be used to separate hydrogen and oxygen in water?
Each component of a ______ retains its individual properties.
Which of the following is not an example of compound?
Mixture is different from a compound. True or false?
The components present in mixtures are in :
Which of the following is not a property of mixture?
Which of the following statement is incorrect?
Which of the following is a characteristic property of both mixtures and compounds?
Ionic compounds have ____ melting and boiling points whereas covalent compounds have _____ melting and boiling point.
Which of the following can give further simplification using ordinary means?
A commercial cake is :
In which row are the substances correctly classified?
Which method separates a mixture of sugar and glass?
The medium having same chemical properties in all directions is called :
Which one of the following is neither an element nor a compound?
Which of the following is not a property of compounds?
The components in compounds ______ their original properties.
The components in mixtures _______ their original properties.