Shubham Jha - Class 9
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Rutherford alpha practicale scattering expirement resulted in the discovery of
Anonymous Quiz
27%
Electron
30%
Atomic mass
14%
Proton
30%
Nucleus in the atom
The first model of atom was given by
Anonymous Quiz
12%
N bhor
14%
E Goldstein
42%
Rutherford
32%
Jj thoshman
An atom with 3 proton and 4 neutron will have a valency of
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16%
3
38%
7
37%
1
9%
4
How many electron are present in M shell of an element with atomic no 20?
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12%
5
53%
8
15%
12
20%
18
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Forwarded from Shubham Jha - Class 10 (Shubham Jha)
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a form of matter has no fixed shape but it has a fixed volume. An example of this form of matter is
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17%
Krypton
50%
Kerosene
22%
Carbon steel
11%
Carbon dioxide
Which of the following phenomena always results in the cooling effect?
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35%
Condensation
42%
Evaporation
18%
Sublimation
5%
None
Which of the following cannot be considered a form of matter?
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18%
Atom
18%
Water
49%
Humidity
15%
All
Which of the following causes the temperature of a substance to remain constant while it is undergoing a change in its state?
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31%
Latent heat
38%
Lattice energy
23%
Lost of heat
8%
None
When water at 0Β°C freezes to form ice at the same temperature of 0Β°C, then it:
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30%
Absorb heat
45%
Release heat
16%
Nither
9%
All
Tissue is a group of similar kind of cells specialized to perform a particular function in the body. Therefore presence of tissues in a multicellular organism ensures:
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30%
Faster development
38%
Division of labour
20%
Higher reproductive
12%
Body strength
Xylemis the specializedtissue of the plants that transports water and nutrients from the soil to the upper partts It is composed of four different types of the cells. Which of the following is not one a type of cell found in xylem tissues?
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13%
Trachied
34%
Vessels
35%
Xylem parenchyma
18%
Sieve tube