CBSE Class10 Exam: Here’s science sample paper 2019

As the CBSE Class 10 board exam 2019 is approaching, students geared up their preparations by revising the entire syllabus and highlighting the important questions for the crucial board examination. CBSE Class 10 board exam 2019, which will be held from February 21 to March 29, is not less than a battle for the students. So, here we are trying to lessen the exam-pressure by providing the sample paper 2019.Also, there are certain basic information that help students to deal with the exam in more sufficiently and productive way. Students must know the structure of board question paper and format of the questions along with marks allocation. After having understanding of marks associated with objective, short-term and long-term questions, wards can make their strategy as per their grip over the type of questions.    

Here, we bring CBSE sample papers that will play a vital role in the exam preparation. By solving the sample papers, student can get an idea about how prepared he/she is; and they can bring in changes in their study for the board exam.Since the design or the format of a board question paper, generally, is not changed, below given sample paper will give the students the preview of the final paper. 

FORMAT OF THE SAMPLE PAPER

There are five sections of questions– A, B, C, D and E Question numbers 1 and 2 in Section-A are one mark question.They are generally objective questions which should be answered in one word or in one sentence.

Question numbers 3 to 5 in Section- B are two marks questions. These are short term questions which should be answered in about 30 words each.

Question numbers 6 to 15 in Section-C are three marks questions which are to be answered in about 50 words each.

Question numbers 16 to 21 in Section-D are 5 marks questions, which are to be answered in 70 words each.

Question numbers 22 to 27 in Section- E are based on practical skills, each question is a two marks question, should be answered in brief.Internal choice is given in sections B, C, D and E.Total time allowed: 3 Hours

Maximum Marks: 80

CBSE Class 10 Science sample paper 2019:

Q. Name a common nutrient that is absorbed in the small intestine and reabsorbed by the kidney tubules.

Q. The presence of a particular group of bacteria in water bodies indicates contamination. Identify the group.

Q. How is Magnesium Chloride formed by the transfer of electrons? Why does the solution of Magnesium chloride conduct electricity?

Q. For the same angle of incidence in media A,B and C, the angles of refraction are  20o, 30o and 40o respectively. In which medium will the velocity of light be maximum? Give reason in support of your answer.

Q. The electronic configuration of an element ‘X’ is 2, 8, 6. To which group and period of the modern periodic table does ‘X’ belong? State it valency and justify your answer in each case.    

Q. The figure below shows three cylindrical copper conductors along with their face areas and lengths. Compare the resistance and the resistivity of the three conductors. Justify your answer.  

Q. The flow of energy between various components of the environment has been extensively studied. Give an outline of the findings.

Q. (a) How will you show experimentally that metals are good conductors of heat.(b) Describe the extraction of Mercury metal from its ore Cinnabar (HgS).

Q. A compound A (C2H4O2) reacts with Na metal to form a compound ‘B’ and evolves a gas which burns with a pop sound. Compound ‘A’ on treatment with an alcohol ‘C’ in presence of an acid forms a Sweet smelling compound ‘D’(C4H8O2). On addition of NaOH to ‘D’ gives back B and C. Identify A, B, C and D write the reactions involved.  

Q. (a)What is meant by the term ‘power of accommodation’? Name the component of eye that is responsible for the power of accommodation.(b) A student sitting at the back bench in a class has difficulty in reading. What could be his defect of vision? Draw ray diagrams to illustrate the image formation of the blackboard when he is seated at the (i) back seat (ii) front seat. State two possible causes of this defect. Explain the method of correcting this defect with the help of a ray diagram.