The class 10 CBSE board examinations 2015 commenced from March 02. Science was the second exam for class 10 board which tested the patience of  students. Much to their relief the exam turned out to be an easy one.

FREE SOLUTIONS TO SCIENCE BOARD PAPER

However, students found it to be lengthy than expected. Here is the detailed analysis of Science paper:

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Key Highlights

Section A: This section comprised 24 questions, in which students found the first three questions to be very easy. Questions with weightage of five marks was found to be easy which also had a passage based question. Questions were generally straight, but the section was considered to be very lengthy and time consuming, particularly so for question No.20.

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Q 20: (a) State the laws of refraction of light. Explain the term absolute refractive index of a medium and write an expression to relate it with the speed of light in vacuum.

(b) The absolute refractive indices of two media ‘A’ and ‘B’ are 2.0 and 1.5 respectively. If the speed of light in medium
‘B’ is 2 × 108 m/s, calculate the speed of light in:

(i) vacuum,
(ii) medium ‘A’.

**MUST READ- CBSE 10- SST Board Paper Solutions

Section B: This section had direct questions as it was a multiple choice questions section. The questions asked were not complicated, which did not take up much time of the students. In general, the exam was simple and students felt that it could be very scoring.

The paper did have a few tricky questions though. Here are some of those:

Q 15 (i) Planaria, insects, octopus and vertebrates all have eyes. Can we group eyes of these animals together to establish a common evolutionary origin? Justify your answer.

(ii) “Birds have evolved from reptiles”. State evidence to prove the statement.

Q 28 Four students P, Q, R and S traced the path of a ray of light passing through a glass slab for an angle
of incidence 40° and measured the angle of refraction. The values as measured by them were 18°; 22°; 25°
and 30° respectively. The student who has performed the experiment methodically is

(A) P
(B) Q
(C) R
(D) S

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With regard to the weightage of the topics covered, Carbon and its compounds from chemistry, How do organisms reproduce from biology and Light ­Reflection and Refraction from physics had the highest topic-wise weightage.

**FREE! CBSE-10 SST NCERT Solutions

Overall, if students were well prepared and the preparation was thorough, good results can be expected for class 10 for this paper.

MERITNATION VERDICT

For those of you who have been studying on Meritnation, will know that the following questions that have already been discussed on the Ask & Answer forum of the website, were exactly the same as it appeared in the paper. And for those who did not – Now you know what you might have missed out on!

Delhi Set 1- Q5: CLICK HERE

Delhi Set 1 Q13: CLICK HERE

Delhi Set 3 Q7: CLICK HERE

Delhi Set 3 Q10: CLICK HERE

Team Meritnation wishes you all the very best for the Social Science exam on 10 March,2015

Good Luck!