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i-Tutor Term Test-6
Time : 3 Hrs.Science-CBSE (Class X)
(i) The question paper comprises three sections A, B and C. You are to attempt all the sections.
(ii) All questions are compulsory.
(iii) Section A comprises of 20 questions (10 VSA, 8 MCQ and 2 AR Type) of 1 mark each. Section B comprises
of 10 questions of 3 marks each. Section C comprises of 6 questions of 5 marks each.
(iv) There is no overall choice in the paper. However, internal choice is provided in 3 questions of 1 mark, 3 questions of 3 marks, 3 questions of 5 marks.
(v) Use of calculator is not permitted.
(vi) It is mandatory to use Blue/Black Ballpoint Pen to write the answer.
SECTION-A
Very Short Answer Type Questions : [10×1=10]
1. Define variations. [1]
2. What are the sex chromosomes found in human male and female? [1]
3. The space or region around a magnet or a current carrying conductor in which its influence can be felt by any magnetic substance is called magnetic field. Magnetic field is represented by field lines. It is a path either straight or curved, the tangent to which at any point gives the direction of the magnetic field at that point. The pattern of a magnetic field in a region can be shown with the help of magnetic field lines.
(a) What is Ampere’s swimming rule? [1]
(b) Write the SI unit of magnetic field intensity. [1]
(c) Magnetic field lines are concentric circles due to a current carrying straight conductor. (True/False) [1]
(d) A charged particle is moved along a magnetic field lines. The magnetic force on the particle is ______.
[1] Topics Covered :
Physics : Magnetic Effects of Electric Current (Excluding Electric Generator) Chemistry : Complete Syllabus of Module-2*
Biology : Complete Syllabus of Module-2*
*(Excluding Chapters/Topics Deleted by CBSE for this Academic Year)
Code A
Date : 17-01-2021
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4. The element carbon occurs in different forms in nature with widely varying physical properties. These different forms are called allotropes.
(a) In diamond, each carbon atom is bonded to how many other carbon atoms? [1]
(b) Write any one characteristic of fullerenes. [1]
(c) How can diamonds be synthesized? [1]
(d) Differentiate between diamond and graphite on the basis of conductivity. [1] Multiple Choice Type Questions : [8×1=8]
5. When a positive charged particle enters in a uniform magnetic field normally, then the path of the particle will
be [1]
(1) Circular (2) Elliptical
(3) Helical (4) Straight
OR
If the current is flowing anti-clockwise in a circular coil placed in the plane of the paper as shown in the figure,
then the direction of lines of force inside the coil is [1]
(1) Away from you (2) Towards you
(3) Towards the centre of the coil along the radius (4) Away from the centre of the coil along the radius
6. A current carrying wire is placed in a magnetic field as shown in the figure. The direction of force acting on it
is best represented by [1]
(1) (2)
(3)
c (4)
7. As shown in the figure when the switch S is closed, if current in coil A is clockwise, then induced current in coil
B is [1]
(1) Zero (2) Clockwise
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8. The number of valence electrons present in Mg and S respectively are [1]
(1) 2 and 6 (2) 8 and 6
(3) 1 and 2 (4) 2 and 2
9. Which of the following is the major component of bio-gas? [1]
(1) N2 (2) CH4
(3) CO2 (4) O2
OR
Which of the following contains a triple bond? [1]
(1) C2H4 (2) C2H2
(3) O2 (4) H2
10. The first person to explain principles of inheritance by conducting experiment on Pisum sativum was [1]
(1) Gregor Johann Mendel (2) Charles Darwin
(3) A. I. Oparin (4) Stanley L. Miller
11. The Chipko Andolan was leaded by [1]
(1) A. K. Banerjee (2) Amrita Devi
(3) Haldane (4) Sunderlal Bahuguna and Chandi Prasad Bhatt
12. Which of the following is not an example of natural ecosystem? [1]
(1) Forest (2) Pond
(3) Crop field (4) Desert
OR
Which of the following is a biodegradable substance? [1]
(1) Plastic (2) Glass
(3) Fruit peel (4) Aluminium foil
Assertion & Reason Type Questions : [2×1=2]
In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R).
(1) Both (A) and (R) are true and (R) is the correct explanation of (A) (2) Both (A) and (R) are true but (R) is not the correct explanation of (A) (3) (A) is true but (R) is false
(4) (A) is false but (R) is True
13. A : Valency of carbon is four. [1]
R : Number of valence electrons present in a carbon atom is 2.
14. A : The non-living factors or the physical environmental factors prevailing in an ecosystem constitute the
abiotic components. [1]
R : The organisms which produce their own food by using organic raw materials are called producers.
SECTION-B
Short Answer Type Questions : [10×3=30]
15. Define the following :
(i) Solenoid [1]
(ii) Electromagnet [1]
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OR
What is Fleming’s right-hand rule? Explain with the help of proper diagram. [3]
16. How does the strength of magnetic field at the centre of a circular coil of a wire affected with radius of coil,
magnitude of current and direction of current? [3]
17. (i) What are magnetic field lines? [1]
(ii) Why two magnetic field lines do not intersect each other? [1]
(iii) How can we compare the strength of magnetic field in different region of magnetic field? [1]
18. Draw the magnetic field line of current carrying circular loop. How does the increasing the number of turns in the loop will effect the magnetic field? Also draw the graph between magnetic field and current in the circular
loop keeping other things constant. [3]
19. Draw the structure of
(a) Butane [1]
(b) Second member of homologous series of alcohol [1]
(c) Pentene [1]
20. Define the following terms : [3]
(a) Electronegativity (b) Ionisation energy (c) Valency
21. On moving down a group in the Modern Periodic Table, the non-metallic character decreases, why? [3] OR
What are metalloids? Name any four metalloids. [3]
22. (i) What are ODS? [1]
(ii) Give any two preventive measures to reduce ozone depletion. [2]
23. What are inherited and acquired traits? Give one example of each. [3]
24. (i) What are genetic variations? Give two examples of it. [2]
(ii) What is law of segregation? [1]
OR
How is the sex of a newborn individual determined in animals? Give a short note. [3]
SECTION-C
Long Answer Type Questions : [6×5=30]
25. (i) How can you say that a current carrying solenoid behave as a bar magnet? Also draw the magnetic field
lines pattern due to a solenoid. [3]
(ii) Four particles enter a region of uniform magnetic field. Their trajectories are shown in figure. What are the
signs of the charges of all four particles? [2]
26. Draw a labelled diagram of electric motor. Explain the principle and working of an electric motor. What is the
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OR
(i) Two circular coils A and B are placed closed to each-other. It is current in the coil A is changed will some
current be induced in the coil B? Give reason. [2]
(ii) A coil of insulated copper wire is connected to a galvanometer. What will happen if a bar magnet is
(a) Pushed into the coil [1]
(b) Withdrawn from inside the coil? [1]
(c) Held stationary inside the coil? [1]
27. (i) Draw the structures of all the possible isomers of pentane. [3]
(ii) Write the chemical formulae of
(a) Benzene [1]
(b) Cyclohexane [1]
28. (i) Define : [3]
(a) Valence electrons (b) Atomic radius
(c) Mendeleev’s Periodic Law
(ii) The atomic number of an element is 13. To which group and period of Modern Periodic Table, this element
belong? [1]
(iii) What is the cause of periodicity in the Modern Periodic Table? [1] OR
(i) Why was the position of hydrogen controversial in I(A) group of Mendeleev’s Periodic Table? [1]
(ii) Arrange the elements of group-17 in increasing order of their atomic radii. [1]
(iii) Explain how does the metallic character vary in group-1 of Modern Periodic Table? [3]
29. (i) What happens if coal and petroleum are burnt with insufficient supply of oxygen? [1]
(ii) Mention any four benefits of water harvesting. [2]
(iii) When do biodegradable substances act as pollutants? [2]
30. (i) Explain the different kinds of stakeholders associated with the conservation of forests. [4]
(ii) What is biomagnification? [1]
OR
Give any five advantages of ground water. [5]
