13/05/2018 G1_FDN-X

CODE-A

Regd. Office : Aakash Tower, 8, Pusa Road, New Delhi-110005

MM : 40
Fortnightly Subjective Test-1 (FST) Time : 1½ Hrs.

Integrated Classroom Course for

Topics Covered :
Physics : Light : Reflection and Refraction (Properties of Light, Propagation of Light, Reflection of Light,
Spherical Mirror – Concave and convex and their image formation, Mirror Formula, Magnification)
Chemistry : Chemical Reactions & Equations : Types of Change in matter, Chemical Equation (Essentials,
steps for writing, Balancing)
Biology : Life Processes (What are life processes?, Nutrition, Mode of nutrition – Autotrophic nutrition,
Heterotrophic nutrition, how do organisms obtain their nutrition, nutrition in human beings,
Respiration – respiration in animals, Human respiratory system, Mechanism of breathing,
Respiration in plants)

GENERAL INSTRUCTIONS :
1. All questions are compulsory.
2. Questions 1 & 2 carry one mark. These are to be answered in either one word or one sentence.
3. Question number 3 carries two marks. This is to be answered in about 30 words.
4. Questions 4 to 8 carry three marks each including 1 value based question. These are to be answered in
about 50 words.
5. Questions 9 to 11 carry five marks each. These are to be answered in about 70 words.
6. Questions 12 to 14 carry two marks each. These are to be answered in about 30 words.
7. Use of calculator is not permitted.
8. It is mandatory to use Blue/Black Pen to write the answer.

TO BE FILLED BY THE
TEACHER

Name : _________________________________________________ Marks obtained in :

Physics
Section : _________________________________________________
Chemistry

Roll No. Biology

Total

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Class-X Fortnightly Subjective Test (G1_FST-1A)

SCIENCE

SECTION-A
Very Short Answer Type Questions : [2×1 = 2]
Q1. Write the relation between the radius of curvature R, and focal length f for a spherical mirror of small aperture.
[1]
Q2. Why do single-celled organisms not need specific organs for taking in food, exchange of gases or removal
of wastes? [1]
Short Answer Type Questions : [1×2 = 2]
Q3. Give an example of a reaction where formation of precipitate takes place. Write its balanced chemical equation.
[2]
Short Answer Type Questions : [5×3 = 15]
Q4. What is reflection of light? State the laws of reflection of light. [3]
Value Based Question :
Q5. Vinayak while driving his car sees a woman behind driving a scooty through his rear view mirror. He sees
that her saree is almost touching the rear wheel of her vehicle. He stops her and alerts.
(a) What values you observe in Vinayak? [1]
(b) What kind of mirror we prefer as a rear view mirror in vehicles? Why? [2]
Q6. Give any three examples of physical changes. [3]
Q7. (a) Briefly explain the process that takes place in yeast during fermentation. [2]
(b) Why is fermentation called anaerobic respiration? [1]
Q8. (a) Draw a cross-section of a leaf and label the names of the parts which
(i) Is responsible for the opening and closing of stomatal pore.
(ii) Contains the pigment essential for photosynthesis. [2]
(b) Name the essential mineral nutrient used by plants in the synthesis of proteins. In which form, this element
is taken? [1]
Long Answer Type Questions : [3×5 = 15]
Q9. (a) Define the following terms for a spherical mirror
(i) Pole
(ii) Centre of curvature [2]
(b) An object of height 6 cm placed at a distance of 24 cm from a concave mirror of focal length 30 cm.
Find position, height and nature of image. [3]
OR
(a) Define convex mirror. [1]
(b) Draw the image formation and write the nature and position of image formed by a convex mirror in the
following cases.
(i) When object is placed between infinity and the pole of mirror. [4]
(ii) When object is placed at infinity

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Fortnightly Subjective Test (G1_FST-1A) Class-X

Q10. Write the balanced chemical equation for the following : [1×5 = 5]
(a) Iron + Copper sulphate → Iron sulphate + Copper
(b) Benzene + Oxygen → Carbon dioxide + Water
(c) Sodium chloride + Silver nitrate → Sodium nitrate + Silver chloride
(d) Magnesium + Hydrochloric acid → Magnesium chloride + Hydrogen
(e) Lead nitrate 
∆
→ Lead oxide + Nitrogen dioxide + Oxygen
Q11. (a) Write down the features of the structures found in the organs of terrestrial animals through which exchange
of oxygen and carbon dioxide take place. [1½]
(b) What is the purpose of [1½]
(i) The presence of fine hair and mucus in the lining of nasal chambers?
(ii) The presence of rings of cartilage in the throat?
(iii) Gills in fishes?
(c) Name the respiratory pigment found in human beings and in which cells is it present. [1]
(d) In which form carbon dioxide is mostly transported in our blood and why? [1]

SECTION-B
Practical Based Questions : [3×2 = 6]
Q12. A student determines the focal length of an optical device X, by focusing the image of a far off object on the
screen positioned as shown in figure below. Identify device X and find its focal length. [2]

Screen

1 2 3 4 5 6 7 8 9 10
cm
Q13. Write any two characteristics associated with the reaction given below: [2]
Hydrogen + Oxygen → Water
Q14. While preparing a temporary mount of a leaf peel to show stomata in dicot plant, epidermal peel from
lower surface of leaf is taken. Why? [2]

q q q

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