CBSE Class 10 Science Question Paper 2017: Delhi Region, is available here for download in PDF format. Students can download the complete question paper from the link given at the end of this article.
CBSE Class 10 Science 2017 Board Exam was held on 22nd March 2017. The question paper carries 30 questions totalling to 90 marks. There is no overall choice in the question paper; however, internal choices are present in some questions.
Some randomly selected questions from the question paper are:
Q. Write the molecular formula of first two members of homologous series having functional group –Cl.
Q. An object is placed at a distance of 30 cm in front of a convex mirror of focal length 15 cm. Write four characteristics of the image formed by the mirror.
Q. Two carbon compounds X and Y have the molecular formula C4H8 and C5H12 respectively. Which one of these is most likely to show addition reaction? Justify your answer. Also give the chemical equation to explain the process of addition reaction in this case.
Q. An element P (atomic number 20) reacts with an element Q (atomic number 17) to form a compound. Answer the following questions giving reason :
Write the position of P and Q in the Modern Periodic Table and the molecular formula of the compound formed when P reacts with Q.
Q. State the changes that take place in the uterus when :
(a) Implantation of embryo has occurred.
(b) Female gamete / egg is not fertilised.
Q. An object 4 cm in height, is placed at 15 cm in front of a concave mirror of focal length 10 cm. At what distance from the mirror should a screen be placed to obtain a sharp image of the object.
Calculate the height of the image.
Q. You have been selected to talk on “ozone layer and its protection” in the school assembly on ‘Environment Day.’
(a) Why should ozone layer be protected to save the environment?
(b) List any two ways that you would stress in your talk to bring in awareness amongst your fellow friends that would also help in protection of ozone layer as well as the environment.
Q. How do Mendel’s experiments show that
(a) traits may be dominant or recessive ?
(b) inheritance of two traits is independent of each other ?
Q. “For demonstrating the preparation of soap in the laboratory which
of the following combinations of an oil and a base would be most
(a) Mustard oil and calcium hydroxide
(b) Castor oil and calcium hydroxide
(c) Turpentine oil and sodium hydroxide
(d) Mustard oil and sodium hydroxide
To get the complete question paper, click over the link given below: