RPET Question Paper 2006 With Answers Solution Free Download.
Rajasthan Pre-Engineering Test 2006 Exam For Admissions on B.Tech., B.Tech. Engineering programmes
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Rajasthan Pre-Engineering Test 2006 Exam 2006 Question paper having Physics, Chemistry and Mathematics Question with solution
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Which of the following statements is true for enzymes?
I. Enzymes do not have nucleoli groups.
H. Enzymes are specific in joining with chiral molecules and catalyse their reaction.
Ill. Enzyme catalysis the chemical reactions by decreasing the activation energy.
Pepsin is a Proterozoic enzyme.
(a) I (b) I and IV
(C) I arid III (d) II, HI and IV
A chemical reaction is catalyzed by catalyst X. Hence. X
(a) increases the activation energy of reaction.
(b) does not effect the equilibrium constant of reaction.
(c) decreases the velocity constant of reaction.
(d) decreases the enthalpv of reaction.
The formation of Bakelite takes place between the reaction of
(a) phenol and formaldehyde
(b) ethylene glvcol and dimethyl terephth alate
(c) urea and formaldehyde
(d) tetramethylene glycol and hexa methylene diisocynate
The pH does not change on the addition of some amount of acid or base in the blood, because blood
(a) becomes coagulate easily
(h) has serum protein which acts as buffer
(c) is liquid of body
(d) has iron in the form a part of molecule
A ozone layer is present approximately 20 km above from earth. Which of the following statement is correct for ozone and ozone layer?
(a) The change of ozone into oxygen is a endothernflc reaction.
b) Ozone layer is harmful for us because it stops the rays which are useful for photosynthesis.
(c) Ozone layer is useful to us because ozone absorbs the ultra-violet rays of sun.
Id) Ozone is a trimolecular linear molecule.