Which of the following chemically combined together to form a compound?
a) elements
b) atoms
c) molecules
d) mixtures
In which of the following, the properties of the components are not retained?
a) compound
b) mixture
c) both a and b
d) none of these
Which of the following is difficult to separate?
a) homogeneous mixture
b) heterogeneous mixture
c) components of compound
d) none of them
Which of the following is/are fixed for compound?
a) boiling point
b) melting point
c) both a and b
d) none of them
In which of the following, new substance is formed?
a) compound
b) mixture
c) both a and b
d) all of these
Explanation:a compound is a substance made up of two or more different chemical elements combined in a fixed ratio
The temperature at which solid substance melts and changes into liquid is called…….
a) boiling point
b) melting point
c) freezing point
d) transition temperature
A
by at 2025-12-07 08:18:54