WBJEE Question Paper Answers 2013 Engineering and Medical.
West Bengal Joint Entrance Exam (WBJEE) 2013 examination is the procedure to get the Admission to West Bengal Engineering and Medical Colleges for admission to Professional Degree Courses
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WBJEE Question Paper Answers 2013 Engineering and Medical
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Silicone oil is obtained from the hydrolysis and polymerisation of
(A) trimethylchlorosilane and dimethydichlorosilane
(B) trimethylchlorosilane and methyltrichlorosilane
(C) methyltrichlorosilane and dimethyldichlorosilane
(D) triethylchlorosiland and diethyldichlorosilane
Ans : (A)
Hints : Silicone oils are formed on low degree of polymerisation
Identify the CORRECT statement
(A) Quantum numbers (n,I,m,s) are obtained arbitrarily
(B) All the Quantum numbers (n,I,m,s) for any pair of electrons in an atom can be idential under special circum
(C) all the quantum numbers (n,I,m,s) may not be required to described an electron of an atom completely
(D) All the quantum numbers (n,I,m,s) are required to describe an electron of an atom completely
Ans : (D)
Hints : Fact
In borax the number of B–O–B links and B–OH bonds present are, respectively,
(A) Five and four (B) Four and five (C) Three and four (D) Five and five
Ans : (A)
The important advantage(s) of Lintz and Donawitz (L.D.) process for the manufacture of steel is (are)
(A) The process is very quick (B) Operating costs are low
(C) Better quality steel is obtained (D) Scrap iron can be used
Ans : (A, C, D)
Hints : Fact