Here past papers of chemistry sargodha board is present
Chemistry 10th class:
Msqs:
1)Which one of the following gas is
Used to destroy harmful bacteria in water
Chlorine
Bromine
lodine
2)3 gcm
Ex m water at 4Cis
300
350 C
400 C
450
3)Crude oil is healed in the furnace upto
/K,K is always equal to
RR
K,IK
When the magnitude of K is very small it
4)The amount of Reaction will Ali reactants wil Equilibrium indicates
g0 to be converted to
products
products IS
negligible
will never dictates
establish
completion
Na, Sio
Na,CO
CaO
Naci
5)|Which one of the following salt formed a
incomplete combustion of alkanes produces
Complex salt
Mixed Salt
Double Salt Normal Sa
6) amount of carbon ignite coal is:
90 %
80 %
7)Which one.of the following is tasteless
Sucrose
Fructose
GIocuse
Starch
8)which perpose name of vitamin?
Lewis
Funk
F.Cric
9) who perposed law of acid?
newton
lowery
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Subjects type:
Part------------------1
Answer briefly any 5 questions:
Define Ry NIN.
In which toneactlon will proceed if QKo 2
Write two Macroscopic characteristics of forward reacion
Define "Chemical equilibrium state"
What is mixed salts? Give an example
Give Bronsted Lowry concept of Acids and Bases
example.
Write two uses of calcium chloride.
Which Salt is used to make "Plaster of Paris" Gve formula
2)Answer briefly any Five parts from the following
What is meant by catenation? Give an example of a
compound that displays catenation.
Define functional group with an example.
Write the structural formula of each of the following.
(a) n-butane () iso butane
Differentiate between saturated and unsaturated hydrocarbons.
Write one use of each of acetylene and chloroform
Write the structural formula of fructose.
What are four fat soluble vitamins?
Write a source and a use of vitamin A
Answer briefly any Five parts from the followings
Write percentage composition of dry air by volume.
Give two effects of ozone depletion.
State the major sources of CO and Co,
Define Scum.
Define Gravity?
How aR
Define equilibrium. Give equation.
the blast furnace
Part------------------2
Note: Attempt any two questions
State the law of Mass actions and derive equilibrium constant
expression for a general reaction.
Write down four uses of Bases
Write down four sources of Alkanes
Write down four uses of lipds
How crude oil is refined? Explain two important fractions of.
petroleum along with their uses.
Explain four important waterborne diseases.
