
Physical Pharmacy-II
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University
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Akhila Varanasi
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15 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The half life of a first order reaction is 4 years. What is shelf life.
0.02
0.03
0.17
0.61
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In chemical kinetics the rate of reaction is expressed as (-dc/dt) where dc, refers to which concentration?
Catalyst
Product
Reactant
Solvent medium
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
In a second order reaction a=b. 20% of the reaction is completed in 500 seconds.calculate the time required for reaction to complete 60%.
300 sec
100sec
4000sec
50sec
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The integral equation for a reaction K=X/at.x/(a-x) is concerned with the order.
First
Pseudo first
Second
Zero
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
In the photochemical degradation of multisulphapreparation the order that a reaction does follow is
First
Pseudo first
Second
Zero
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the degradation studies of aspirin suspension the orders observed initially and at the end
First, second
First,zero
Second,first
Zero, first
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In reactions that follow 1st order kinetics,half life is expressed by equation.
0.693/k1
0.301/k1
0.105/k1
K1/0.693
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