Which of the following non-metal is a good conductor of electricity?
Anonymous Quiz
26%
Aluminium
17%
Silicon
45%
Graphite
12%
Gold
According to the definition of pure substance, which of the following is a pure substance?
Anonymous Quiz
17%
Ice
23%
Mercury
16%
Iron
44%
All of these
Which of the following elements is not a metalloid?
Anonymous Quiz
23%
Boron
22%
Silicon
23%
Germanium
33%
Tungsten
Balanced forces are defined as :
Anonymous Quiz
46%
If two or more forces cancel each other
24%
If two or more forces do not cancel each other
23%
Both a and b
7%
None
When we stretch a rubber band this is example of
Anonymous Quiz
71%
Change shape of the object by force
10%
Stop motion by the force
14%
Change direction of motion by force
5%
None
When a batsman hits the cricket ball, this is an example of:
Anonymous Quiz
48%
Change direction of motion by force
7%
Stop motion by the force
15%
Change speed by the force
29%
Both a and c
________ is the smallest particle of the element that cannot usually exist independently and retain all its chemical properties.
Anonymous Quiz
17%
Molecules
62%
Atoms
10%
Ion
11%
Electron
Chemical name of CaO is ________
Anonymous Quiz
14%
calcium monoxide
73%
calcium oxide
9%
calcium dioxide
3%
oxidised calcium
At what temperature does solid ice and liquid water co-exist together?
Anonymous Quiz
18%
400 degree C
20%
300 degree C
43%
100 degree C
19%
None of these
Generally on heating, temperature of substances_____________ ?
Anonymous Quiz
73%
Increases
16%
Decreases
9%
Remain the same
2%
None of these
What is the physical state of water at 25° C?
Anonymous Quiz
26%
Solid
13%
Gas
58%
Liquid
3%
None of these