Chemistry class ix notes 9th class board pattern model paper
Chemistry Unit-1 Fundamental of Chemistry Important questions, if you attempt these question you will get InshaAllah 100% marks.
Unit-1 Fundamental of Chemistry
Objective
Part
Choose the right option. 10×1=10
A
|
B
|
C
|
D
|
||
1
|
How many no of moles are
equivalent to 8 grams of CO2
|
0.15
|
0.18
|
0.21
|
0.24
|
2
|
Qualitative and quantitative
analysis are carried in:
|
Environmental
Chemistry
|
Analytical Chemistry
|
Organic Chemistry
|
Nuclear Chemistry
|
3
|
The molar mass of H2SO4 is:
|
98g
|
98amu
|
9.8g
|
9.8amu
|
4
|
The fixed ratio of hydrogen and
oxygen by mass is:
|
2:1
|
8:1
|
1:8
|
1:2
|
5
|
NH4+ and H30+
are the examples of:
|
Anion
|
Cation
|
Radical
|
Ion
|
6
|
Valency of chlorine is:
|
4
|
3
|
2
|
1
|
7
|
The number of protons present in
the nucleus of its atom is known as:
|
Atomic number
|
Atomic mass
|
Atomic unit
|
Formula unit
|
8
|
A piece of matter in pure form is
termed as:
|
Element
|
Mixture
|
Substance
|
Matter
|
9
|
A molecule containing same type
of atoms is called:
|
Homoatomic molecule
|
Heteroatomic molecule
|
Both a and b
|
None of these
|
10
|
_______ are atoms or group of
atoms possessing an odd (unpaired) electron.
|
Molecules
|
Free radicals
|
Ions
|
Molecular ions
|
Subjective
Answer the short
questions. 10×2=20
1. How
does homogenous mixture differ from heterogenous mixture?
2.
Differentiate
between molecular mass and formula mass?
3.
Define
industrial chemistry and analytical chemistry?
4.
What is
empirical formula of acetic acid (CH3COOH)? Find out its molecular
mass?
5.
Find out the
mass of 3 moles of oxygen atoms?
6.
Define relative
atomic mass.
7.
Differentiate
between physical and chemical properties.
8.
How many times
is 1 mole of oxygen atom heavier than 1 mole of hydrogen atom?
9.
Differentiate
between ions and free radicals.
10. Write
down the relationship between mole and mass.
1.
(a) List five
characteristics by which compound can be distinguished from mixture. 3
(b) How many total
atoms are required to prepare 60g of HNO3? 2
Available all
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BIE Karachi Matric Chemistry Class ix notes, Class 9th notes.
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