Kerala SCERT Class 9 Chemistry Structure of Atom Question Answer
Kerala SCERT Class 9 Chemistry Chapter 1 Structure of Atom Question Answer Solution Here. Kerala Board Class 9 Students can find Here 1st Chapter Structure of Atom Notes provide by our Teacher. Important Question Answer from Chapter 1 Structure of Atom.
- Board- Kerala Board.
- Class – 9.
- Subject – Chemistry Part 1
- Chapter – 1
- Chapter Name – Structure of Atom.
- Topic – Question Answer Solution.
Q.1) MCQ
i.)The disease called Daltonism
a.) Color blindness
b.) cholera
c.) Dwarfism
d.) hepatitis
ii.) The father of electricity is….
a.) Julius Plucker
b.) Michael Faraday
c.) J J Thomson
d.) Niels Bohr
iii.) Atomic number is….
a) Number of neutron
b) Number of shell
c) Number of protons
d) Mass number
iv.) Discovery of electrons contributed by
a) J J Thomson
b) John Dalton
c) Rutherford
d) Michael Faraday
v.) Hydrogen have …. Isotopes
a) 4
b) 3
c) 2
d) 1
vi.) Electron is….
a) Positively charged
b) Chargeless
c) Negatively charged
d) Non of the above
vii. Matter is made up of
a) Protons
b) Neutron
c) Electrons
d) Atom
viii. Maximum number of electrons accommodated in K shell
a) 4
b) 2
c) 8
d) 6
ix.) Isotope of phosphorus Used as a tracer for identifying nutrient exchange in plants.
a) P-34
b) P-44
c) P-30
d) P-31
x.) Isobars having same….
a) Atomic number
b) Number of protons
c) Mass number
d) Number of electrons
xi.) Element used in atomic reactors
a) Na
b) Li
c) U
d) Ca
xii. Which of the following is not Fundamental particles of an atom
a) Positrons
b) Neutron
c) Anti-neutrino
d) Atomic number
Q.2) Write very short answers
1.) Define atomic number with two examples.
2.) State two points of Dalton atomic theory.
3.) Who recognise the presence of positive charge in gases by conducting discharge tube experiments ?
4.) Who discovered X-rays accidentally and write 2 uses of X-ray?
5.) Define molecule and write it’s two characteristics?
6.) What is electron and proton ?
7.) Define neutron and state it’s position in an atom.
8.) Define mass number.
9.) Draw Bohr model of hydrogen .
10.) Define isotones and give its two examples?
Q.3) Short answer questions.
1.) If an element having atomic number, Z= 11 and mass number ,
A= 23 , then
i.) How many proton , neutrons and electrons present in an atom.
ii.) Write the electronic configuration of the atom
iii.) Find the atom and draw it’s Bohr atomic model ?
2.) State Difference between proton and electron ?
3.) Why atom is electrically neutral ?
4.) Explain limitations of Rutherford’s planetary model of an atom with diagram.
5.) Complete the following table .
Name of
atom
|
C-12 |
C-13 |
C-14 |
Number of protons | |||
Number of protons | |||
Number of neutron | |||
Atomic number | |||
Mass number |
6.) Write the answers with the help of given of diagram.
i) Atomic number
ii) Mass number
iii) Number of protons
iv) Number of electrons
v) Number of neutron
vi) Electronic configuration
If atomic mass number is 35 and M shell contain 7 electrons then answer the following questions?
i.) Write electronic configuration
ii.) What is atomic number of an atom
8.) Draw Bohr’s atomic model of an element having
Z= 4 and Z = 6
9.) State Difference between proton and neutron
10.) State electronic configuration (shell wise ) of following elements.
i.) Helium
ii.) Berelium
iii.) Carbon
iv.) Oxygen
v.) Neon
Q.4) Long answer questions
1.) Write principles of filling up on electrons in shells with example.
2.) Explain Rutherford’s atomic theory with diagram.
3.) Explain Dalton’s atomic theory
4.) Draw Bohr’s atomic model of following elements
i.) Sodium
ii.) Argon
iii.) tritium
iv.) Phosphorus
5.) Some elements are given below,
i.) Write atomic number and atomic mass number of above mentioned elements.
ii.) Define isotopes and state which from the aboveare isotopic pairs ?
iii.) Draw the Bohr model of atom P .
iv) Write electronic configuration of C
v.) Write electronic configuration of P
vi.) Draw Bohr model of He.
6.) Write electronic configuration of elements from atomic number 7 to 12. And name the elements.
7.) Explain Bohr’s atomic model with 2 examples.
8.) Explain five postulates of atomic theory
9.) Draw Bohr’s model of following
i.) Mg
ii.) S
iii.) O
iv.) Ag
10.) From following figure, write the answers
i.) Write the name of elements
ii.) Write atomic number and mass number of elements.
iii.) Write electronic configuration of elements
iv.) These are isotopes or not ? and Why ?