Sunday, November 15, 2015

2015 O level Science Chemistry 5076/ 5078 Paper 1 (MCQ) Suggested Answers

Dear students, the answers to the 2015 O level Science Chemistry 5076/ 5078 Paper 1 (MCQ) are shown below. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.


2015 O level Science Physics 5076/ 5077 Paper 1 (MCQ) Suggested Answers

Dear students, the answers to the 2015 O level Science Physics 5076/ 5077 Paper 1 (MCQ) are shown below. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.

Wednesday, November 11, 2015

2015 O level Pure Chemistry 5073 Paper 1 (MCQ) Suggested Answers

Dear students, the answers to the 2015 O level  Pure Chemistry 5073 Paper 1 (MCQ) are shown below. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.


Friday, November 6, 2015

Suggested answers to 2015 O level Combined Humanities (Social Studies) 2204 Paper 1

Dear students, the answers to the 2015 O level Combined Humanities (Social Studies) 2204 Paper 1 have been uploaded at www.penciltutor.edu.sg. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.

Suggested answers to 2015 O level Science Physics 5076/5077 Paper 2

Dear students, the answers to the 2015 O level Science Physics 5076/5077 Paper 2 have been uploaded at www.penciltutor.edu.sg. PLEASE BE INFORMED THAT WE WERE UNABLE TO GATHER ALL QUESTIONS FOR THIS PAPER FROM OUR STUDENTS AND THAT SOME QUESTIONS WERE ALSO NOT ACCURATELY REMEMBERED. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.

Thursday, November 5, 2015

Explanation to 2015 O level Pure Physics 5059 Paper 1 (MCQ) Q26

In Q26, options A and D must be excluded as the refracted rays are diverging.

In both options B and C, the refracted ray bends towards the normal of the surface to the lens. For option B, according to the ray diagram, the image must form on the same side as the object.



Diverging lens always produces an image on the same side as the object. A converging lens produces an image on the same side as the object only when the object is placed in front of the focal point. However a ray that approaches a converging lens as shown in option B needs to be parallel to the principal axis or converge towards the principal focus.


Since the emergent ray from the lens is neither parallel to the principal axis nor converging to a point on the other side of the object, B cannot be a converging lens. Thus C is the converging lens where an image is formed on the other side. Option C shows the typical ray diagram for a two lens system. A common application of such a system can be found in hypermetropia (i.e longsightedness) lens correction.

 A closer look at the lens of the eye.




2015 O level Pure Physics 5059 Paper 1 (MCQ) Suggested Answers

Dear students, the answers to the 2015 O level  Pure Physics 5059 Paper 1 (MCQ) have been uploaded at www.penciltutor.edu.sg. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.


Thursday, October 29, 2015

Suggested answers to 2015 O level Combined Humanities (History) 2204 Paper 3

Dear students, the answers to the 2015 O level Combined Humanities (History) 2204 Paper 3 have been uploaded at www.penciltutor.edu.sg. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.


Suggested answers to 2015 O level Combined Humanities (Geography) 2204 Paper 2

Dear students, the answers to the 2015 O level Combined Humanities (Geography) 2204 Paper 2 have been uploaded at www.penciltutor.edu.sg. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.


Suggested answers to 2015 O level Chemistry (Pure Chemistry) 5073 Paper 2

Dear students, the answers to the 2015 O level Chemistry 5073 Paper 2 have been uploaded at www.penciltutor.edu.sg. PLEASE BE INFORMED THAT WE WERE UNABLE TO GATHER ALL QUESTIONS FOR THIS PAPER FROM OUR STUDENTS AND THAT SOME QUESTIONS WERE ALSO NOT ACCURATELY REMEMBERED. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.


Wednesday, October 28, 2015

REVISED suggested answers to 2015 O level Science Chemistry 5076/5078 Paper 3

Dear students, based on the feedback received on the errors in the questions, we have uploaded a REVISED version of the answers to the 2015 O level Science Chemistry 5076/5078 Paper 3 at  www.penciltutor.edu.sg. PLEASE BE INFORMED THAT WE WERE UNABLE TO GATHER ALL QUESTIONS FOR THIS PAPER FROM OUR STUDENTS AND THAT SOME QUESTIONS WERE ALSO NOT ACCURATELY REMEMBERED. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.

The previous version of the suggested answers have been removed.

Tuesday, October 27, 2015

Suggested answers to 2015 O level Science Chemistry 5076/5078 Paper 3

Dear students, the answers to the 2015 O level Science Chemistry 5076/5078 Paper 3 have been uploaded at www.penciltutor.edu.sg. PLEASE BE INFORMED THAT WE WERE UNABLE TO GATHER ALL QUESTIONS FOR THIS PAPER FROM OUR STUDENTS AND THAT SOME QUESTIONS WERE ALSO NOT ACCURATELY REMEMBERED. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.


2015 O level POA 7175 (Principles of Accounts) Paper 2 Suggested Answers

Dear students, the answers to the 2015 O level Principles of Accounts (POA) 7175 Paper 2 have been uploaded at www.penciltutor.edu.sg. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.



Monday, October 26, 2015

2015 O level A Maths (Add Math, AMath, AMaths or Additional Mathematics) Paper 2 Suggested Answers

Dear students, the answers to the 2015 O level Additional Mathematics 4047 Paper 2 have been uploaded at www.penciltutor.edu.sg. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.

Friday, October 23, 2015

Suggested answers to 2015 O level English Language 1128 Paper 2

Dear students, the answers to the 2015 O level English Language 1128 Paper 2 have been uploaded at www.penciltutor.edu.sg. These answers are provided as a SUGGESTION BASED ON THE QUESTIONS SUBMITTED BY OUR STUDENTS. IT IS POSSIBLE THAT ALL THE FOLLOWING ANSWERS OR SUGGESTIONS ARE ALL WRONG! All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com

2015 O level A Maths (Add Math, AMath, AMaths or Additional Mathematics) Paper 1 Suggested Answers

Dear students, the answers to the 2015 O level Additional Mathematics 4047 Paper 1 have been uploaded at www.penciltutor.edu.sg. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.

Thursday, October 22, 2015

Suggested answers to 2015 O level (E Maths) Mathematics 4016 Paper 2

Dear students, the answers to the 2015 O level Mathematics 4016 Paper 2 have been uploaded at www.penciltutor.edu.sg. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.

Monday, October 19, 2015

Suggested answers to 2015 O level (E Maths) Mathematics 4016 Paper 1

Dear students, the answers to the 2015 O level Mathematics 4016 Paper 1 have been uploaded at www.penciltutor.edu.sg. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.


Friday, October 16, 2015

Answers to 2015 O level Science Biology 5077/5078 Paper 5 (Practical)

Dear students, the answers to the 2015 O level Science Biology 5077/5078 practical paper have been uploaded at www.penciltutor.edu.sg. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.

Answers to 2015 O level Science Physics 5076/5077 Paper 5 (Practical)

Dear students, the answers to the 2015 O level Science Physics 5076/5077 practical paper have been uploaded at www.penciltutor.edu.sg. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.

Thursday, October 15, 2015

Answers to 2015 O level Science Chemistry 5076/5078 Paper 5 (Practical)

Dear students, the answers to the 2015 O level Science Chemistry 5076/5078 practical paper have been uploaded at www.penciltutor.edu.sg. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.

Wednesday, October 14, 2015

Answers to 2015 O level Physics 5064 Paper 3 (Practical)

Dear students, the answers to the 2015 O level Physics 5064 practical paper have been uploaded at www.penciltutor.edu.sg. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.


Friday, October 9, 2015

Answers to 2015 O level Chemistry 5074 Paper 3 (Practical)

Dear students, the answers to the 2015 O level Chemistry 5074 practical paper have been uploaded at www.penciltutor.edu.sg. All solutions/ answers are provided by teachers of Penciltutor School and the Singapore MOE or UCLES bears no responsibility for these suggested solutions/ answers. As usual, if you find any errors in our solutions or if you need an explanation, kindly send an email to admin@penciltutor.com.


Monday, October 5, 2015

2015 O level Suggested Answers/ Solutions

Dear students, based on feedback received from past years, we will be publishing answers to the 2015 O level papers at www.penciltutor.edu.sg. You can find the answers to the respective papers by choosing the subject from the drop-down menu.

Wishing all of you the very best!

The Penciltutor Team

Wednesday, January 14, 2015

2014 O Level Results!

Results of our 2014 cohort. 

Congratulations to all our students who have done well!!!



Ng Hong Min, Class of 2014

"Penciltutor teachers were able to identify my weaknesses and were always there for me. Even at 12 midnight before my O level paper! If you are looking for a good private school to retake your O’s, look no further!"

Check out Hong Min's results HERE!



Jiawei, Class of 2014

"Penciltutor is the only private school that can help you achieve your desired grades. From F9 in Phy/Chem in 2013 to an A2 in 2014. Where else can this be possible?”

Check out Jiawei's results HERE!