CBSE Class 10 Science paper is scheduled to take place on 22nd March, 2017. Though students would have already prepared for the exam, still they need to revise everything they know. Solving sample papers, model papers or practice papers can be a good idea to track your preparedness for the coming exam.
Jagranjosh brings you a CBSE Class 10 Science Sample Paper cum Model Test Paper for Summative Assessment- II, 2017. The paper designed by the subject experts, contains all the important questions that are expected to be asked directly or indirectly in the final exam. Paper has been designed as per the latest Syllabus and exam pattern that followed by the CBSE itself.
Some key features of CBSE Class 10 Science Sample Paper SA2/ Board 2017, are:
The paper is to be attempted within 3 hours and carries 90 marks.
Some sample questions from the paper are given below:
Q. Name the classes of organic compounds represented by the following formulae:
Q. Explain why atomic number is more important than atomic weight in determining chemical properties?
Q. (a) Who are the stake holders of forest?
(b) Why should we conserve our forests and wild life?
(c) What is Bio Diversity Hotspot?
CBSE Class 10 Science Sample Paper: 2017 SA–II
Q. Ramesh and his friends performed well in SA-1. They wanted to go for outing, so they made a request to the principal in this regard. lt was decided that they will go by cycle to witness the famous Ranapur water fountain show, situated nearly eight kilometers from their place, with their physical education teacher. lt was a sunny day. They all enjoyed, rejuvenated and rejoiced mind and body. Ramesh was thrilled as he saw an exciting natural spectrum appearing in the sky when he looked at the sky through the water fountain, with the sum behind him. He came back with a number of questions in his mind. Read the given passage and answer the following questions
(a) Name the natural spectrum appearing in the sky. How does it form?
(b) Draw a ray diagram showing formation of natural spectrum appearing in the sky.
(c) What do you observe from Ramesh’s nature?
Q. (i) What are ‘chromosomes’? Where are they located in the cells?
(ii) What is a sex chromosome? Write full form of DNA.
(iii) Explain the mechanism of sex determination in human beings.
Q. (i) Draw a neat diagram of human female reproductive system and label the following parts:
(a) The site of fertilization.
(b) The part which is responsible for providing shelter to the growing embryo.
(c) The part in which ovum formation takes place.
(ii) How does the Embryo get nourishment inside the mother's body? Explain in brief.
Q. (i) Give reason for the following statements:
(a) Sky appears to be blue during day time to a person on earth.
(b) The sky near the horizon appears to have a reddish hue at the time of sunset & sunrise.
(ii) A Mendelian experiment consisted a cross of round and yellow seed plant with wrinkled and green seed plant. The progeny had all round seeds but almost half of them had green seeds. Write the genetic make up (genotype) of the following:
(a) Parent plant with round and yellow seeds.
(b) Parent plant wiih wrinkled and green seeds.
(c) Progeny with round and green seeds.
Q. What do you observe when you drop a few drops of acetic acid to a test tube containing
(b) Distilled water
(c) Universal indicator
(d) Sodium hydrogen carbonate powder
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