Related Questions

At Lions High school 100 students are taking chemistry and 80 students are taking Biology. If 20 students are taking both chemistry and Biology , what is the ratio of the students taking only chemistry to the number taking only Biology?
A 3/4
B 4/3
C 5/4
D 1/4
Select the correct answer choice of the following Question : "At Lions High School 100 students are taking Chemistry and 80 students are taking Biology. If 20 students are taking both Chemistry and Biology, what is the ratio of the students taking only Chemistry to the number taking only Biology?
A 3/4
B 4/3
C 5/4
D 1/4
Four subjects ---physics, Chemistry, Mathematics and Biology ---were taught in four consecutive periods of one hour each starting from 8.00 a.m. At what time was the chemistry period scheduled? 1. Mathematics period ended at 10.00 a.m, which was preceded by Biology. 2. Physics was scheduled in the last period. 3. Mathematics period was immediately followed by Chemistry.
A Only 1
B Only 2
C Only 2 and 3
D Only 1 and either 2 or 3
The total number obtained by a student in Physics, Chemistry and Mathematics together is 120 more than the marks obtained by him in Chemistry. What is the average mark obtained by him in Physics and Mathematics together?
A 40
B 60
C 120
D Cannot be determined
who among the following is a world famous chemist ?
A Jabir Ibne Haiyan
B Ibne Sina
C Omar Khaiam
D Al beruni
Who among the following is a world famous chemist?
A Jabir Ibne Haiyan
B Ibne Sina
C Omar Khaiyam
D Al Beruni
Who among the following is a world famous chemist/
A jabir Ibne haiyan
B Ibne Sin
C Omar khaiam
D Al beruni
Mr. Sarwar is a noted chemist ___________.
A as well as effective teacher
B and too a very efficient teacher
C but he teaches very good in addition
D however he teaches very good also
Mr. Roberts is a noted chemist------
A as well as an effective teacher
B and too a very efficient teacher
C but he teaches very good in addition
D however he teaches very good also
A chemist was preparing a solution that should have included 35 milligrams of chemical . If she actually used 36.4 milligrams,what was her percentage error ( to the nearest 0.01)?
A 0.04%
B 4.00%
C 1.40%
D 3.85%

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