difference between state highways and national highways icse transport(3 points.)
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Sample Question Paper 2020-21
Class X
Science (086) Theory
Time: 3 Hours Maximum Marks: 80
General Instructions:
(i) The question paper comprises four sections A, B, C and D. There are 36 questions in
the question paper. All questions are compulsory.
(ii) Section–A - question no. 1 to 20 - all questions and parts thereof are of one mark each.
These questions contain multiple choice questions (MCQs), very short answer
questions and assertion - reason type questions. Answers to these should be given in
one word or one sentence.
(iii) Section–B - question no. 21 to 26 are short answer type questions, carrying 2 marks
each. Answers to these questions should in the range of 30 to 50 words.
(iv) Section–C - question no. 27 to 33 are short answer type questions, carrying 3 marks
each. Answers to these questions should in the range of 50 to 80 words.
(v) Section–D – question no. - 34 to 36 are long answer type questions carrying 5 marks
each. Answer to these questions should be in the range of 80 to 120 words.
(vi) There is no overall choice. However, internal choices have been provided in some
questions. A student has to attempt only one of the alternatives in such questions.
(vii) Wherever necessary, neat and properly labeled diagrams should be drawn.
SECTION A
No. Questions Marks
1 List any two observations when Ferrous Sulphate is heated in a dry test tube?
OR
Identify the products formed when 1 mL of dil. Hydrochloric acid is added to
1g of Sodium metal?
1
2 Write the chemical name and chemical formula of the salt used to remove
permanent hardness of water.
1
3 Which of the following is not observed in a homologous series? Give reason
for your choice.
a) Change in chemical properties
b) Difference in -CH2 and 14u molecular mass
c) Gradation in physical properties
d) Same functional group
1
4 Why does the Sun appear white at noon? 1
2
5 Both a spherical mirror and a thin spherical lens have a focal length of (-)15
cm. What type of mirror and lens are these?
1
6 The image formed by a concave mirror is observed to be real, inverted and
larger than the object. Where is the object placed?
OR
Name the part of a lens through which a ray of light passes without suffering
any deviation.
1
7 In the arrangement shown in figure there are two coils wound on a nonconducting cylindrical rod. Initially the key is not inserted in the circuit. Later
the key is inserted and then removed shortly after