9th class chemistry Chapter wise Test
9th Class Chemistry Chapter wise Test for the preparation of Matriculation annual examination.
Important MCQs of 9th Class Chemistry Chapter wise Test
1)How much mass of one water molecules
(a)18amu (b)18g
(c)18mg (d)18kg
2)Which of the following is molar mass of O2
(a)32amu
(b)53.12×10-24amu
(c)1.92×10-25amu
(d)192×10-25amu
3)Which of the following pair have equal mass ? ۔
(a)1 mol COیا 1mol
N2
(b)1molCo یا 1mol
CO2
(c)1 mol O2 یا 1mol N2
(d)1mol CO2 یا 1 mol O2
4)Who proposed concept of orbit ۔
(a)J.J Thomsan (b)Rutherford
(c)Bohr (d)Plank’s
5)Which of these shell consist of three sub shell ۔
(a)O shell (b)N
shell
(c)L shell (d)M
shell
6)Deutrum is used to make these ۔
(a)light water (b)heavy water
(c)soft water (d)hard water
7)How much quantity of C – 12 isotopes contain
(a)96.9%
(b)97.6%
(c)98.9% (d)99.7%
8)The original periodic table of Mendeleev was based upon ۔
(a)electronic configuration
(b)atomic mass
(c)atomic no.
d)completion of sub shell
9)Which of the following halogen have lowest electro
negativity
(a)F (b)Cl
(c)Br
(d)I
10)In a period, which of these decreases. ۔
(a)electron affinity
(b)ionization energy
(c)atomic radius
(d)electro negativity
11)Transition
elements are
(a)all gases (b)all metal
(c)all non metal (d)all
metalloid
12)When Uranium – 235 break down it produces
(a)electron (b)neutron
(c)proton (d)none
13)Which of the following pair have polar covalent bond
(a)Cl2 , O2 (b)N2 ,
H2O
(c)C2H2 , H2O (d)HCl , H2O
14Which of the following atoms have weakest force
(a)ionic force
(b)metallic force
(c)intermolecular force
(d)covalent force
Important Short Questions of 9th Class Chemistry Chapter wise Test
Short
Questions.
1)Differentiate b/w
shell and sub shell give example?(2)Write electronic configuration of Al+3.
How much electrons are in outer most shell?(3)For which purpose U – 235 is
used?(4)What are drawbacks of Rutherford atomic model?(5)Describe five
characteristics of cathode rays? (9)Why group one element prefer to combine
with group seventeen element?(10)Why metals nucleus have low attraction on
outermost electrons?
Short
Questions.
1)Soft drink is
mixture but water is a compound. Reason?(2)Define empirical formula with
example?(3)How homogenous mixture is
different from heterogeneous mixture?(4)Describe scope of biochemistry?(5)What
is meant by relative atomic mass?
Short
Questions.
1)Why Nobel gases
are non reactive effects?(2)What is the difference b/w mendeleeve’s periodic
law and modern periodic law?(3)What is meant by shielding effect?(4)How
periodicity of properties depends upon the no. of protons in a atom?(5)Why atom
size does not decreases regularly in a period(6)What is atomic size and atomic
radius
Important Long Questions of 9th Class Chemistry Chapter wise Test
(a):Describe five those properties on which base mixtures
and compound can be differentiated.
(B):Explain following
with examples. (a) Gram & Gram atom (b)Molecules & Gram (c)Gram formula (d)Molar mass
(a):How Rutherford prove that nucleus is in the center of
atom.
B):When it was proven that electron are basic particles
of atom.
(a):What is ionization energy? Explain its trend in
periodic table.
(B):Explain following with reason ÚºLarge size atoms have less ionization energy and have
greater shielding effects. ۔
(c):What is metallic bond . Explain
detail
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