Shubham Jha - Class 9
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How many times an atom of sulphur is heavier than an atom of carbon?
Anonymous Quiz
27%
4/3
39%
8/3
27%
12/3
7%
None
The molecule having an atomicity of 4 is:
Anonymous Quiz
26%
Sulphate
34%
Ozone
28%
Phosphrous
12%
Nitrogen
A group of atoms carrying a fixed charge on them is called …………..
Anonymous Quiz
51%
Atomic ion
28%
Polyatomic ion
15%
Semi-atomic ion
6%
None
Elements are represented by symbols and molecules by …………….
Anonymous Quiz
28%
Chemical name
20%
Chemical process
10%
Chemical changes
42%
Chemical formula
An atom or a group of atoms which carries positive or negative charge is called an ……………..
Anonymous Quiz
65%
Ion
16%
Cation
14%
Anion
4%
None
The phenomenon of change of a liquid into the gaseous state at any temperature below its boiling point is called ………………
Anonymous Quiz
12%
Filteration
70%
Evaporation
14%
Osmosis
3%
Centrifugation
Evaporation of a liquid at room temperature leads to a ………….. effect.
Anonymous Quiz
40%
Heating
43%
Cooling
14%
Both
4%
None
A mixture of two or more miscible liquids, for which the difference in the boiling points is less than 25 K can be separated by the process called ………….
Anonymous Quiz
40%
Fractional distillation
40%
Centrifugation
17%
Osmosis
2%
None
Speed is scalar quantity and velocity is ……………… quantity.
Anonymous Quiz
12%
Scaler
81%
Vector
6%
Both
2%
None
If speed of a body is continuously decreasing, the body is said to ……………
Anonymous Quiz
13%
Vector
60%
Retarding
20%
Displacement
7%
None