Pure substance: examples and properties - class-VIII
Description: pure substance: examples and properties | |
Number of Questions: 26 | |
Created by: Ankita Patil | |
Tags: the nature of matter elements, compounds and mixtures structure of matter and molecule element, compound and mixture is matter pure chemistry matter around us methods of separation is matter around us pure composition of matter pure substances and mixtures: separation of mixtures |
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.