At what temperature does solid ice and liquid water co-exist together?
Anonymous Quiz
22%
400° C
28%
300° c
20%
1000° c
31%
None of these
Generally on heating, temperature of substances_____________ ?
Anonymous Quiz
68%
Increases
19%
Decreases
10%
Remain same
3%
None of these
What is the physical state of water at 25° C?
Anonymous Quiz
22%
Solid
17%
Gas
59%
Liquid
2%
None of these
The temperature at which a liquid changes to gas is called?
Anonymous Quiz
19%
Melting point
61%
Boiling point
16%
Freezing point
4%
None of these
Camphor disappears without leaving any residue because of___________?
Anonymous Quiz
47%
Sublimation
23%
Diffusion
12%
Fusion
18%
Evaporation
Which of them is not an example of sublime?
Anonymous Quiz
27%
camphor
17%
Naphthalene balls
37%
Ammonia chloride
19%
All of above
The heat supplied to a substance during the change of its state is?
Anonymous Quiz
44%
latent heat
30%
Vaporization heat
18%
Fusion heat
8%
None of these
Why which process we can extract salt from ocean water?
Anonymous Quiz
55%
evaporation
24%
sublimation
17%
Boiling
4%
None of these
Which of them is a surface
phenomenon?
phenomenon?
Anonymous Quiz
29%
melting
44%
evaporation
14%
sublimation
12%
None of these
Which statement is false?
Anonymous Quiz
14%
Metal are generally hard
23%
Metal has high melting and boiling point
22%
Osmosis metal has high density
42%
Metal are non-sonorous
Name the quantity of matter which is present in an object :
Anonymous Quiz
22%
Density
11%
Gram
58%
Mass
9%
Weight
Name the solution in which different elements are present:
Anonymous Quiz
28%
homogeneous mixture
38%
Mixture
26%
Heterogeneous mixture
8%
Dilute solution
The force which is present in elements:
Anonymous Quiz
32%
chemical bond
25%
gravitational force
10%
physical bond
32%
force of attraction
Among the following, which option contains the only element?
Anonymous Quiz
49%
Sulphur, carbon, Calcium
21%
brass, oxygen
12%
Fire, water, air
18%
Air, water, oxygen
Which of the following statement is true for the compound?
Anonymous Quiz
19%
Contains only metallic elements chemically joined together.
45%
is made up of two or more elements chemically joined together.
13%
made up of the only element.
23%
contains two or more elements physically combined together in a fixed ratio.
Among the following options of substances which one represents mixtures only?
Anonymous Quiz
29%
Brass, seawater and air
33%
Air, blood and sodium chloride
20%
Gold, carbon and air
18%
Orange juice, sodium and hydrogen
Which one of the following elements is used in party balloons?
Anonymous Quiz
15%
Neon
25%
Oxygen
43%
Helium
18%
Nitrogen
One of the following substances is not an element. Which one is it?
Anonymous Quiz
13%
Hydrogen
14%
Nitrogen
52%
Water
22%
Mercury