DIAGRAM BASED QUESTIONS
PHYSICS
1. Observe the below figure. When switch is closed, does the B end of the solenoid attract the N end of the bar magnet? Clarify the answer.
★ No / Repel
★ When the switch is closed, the B end of the solenoid behaves like the N pole. Hence the homogeneous poles repel it.
2. Observe the figure given below. Name the angle of deviation and identify its value.
Ans:
★ the angle of deviation is angle HGF
★ its value is 38^o
3. Observe the figure given below. The magnetic field at the centre ‘C’ of circular coil is
(A) zero
(B) I
(C) I1
(D) I2
Ans: (A) zero
4. Define the phenomenon expressed in below given figure. Which colour does H and M represent here?
★ Phenomenon: Dispersion of light
★ H represents Red
★ M represents Blue
5. Two situations of freely suspended parallel copper wires carrying current are shown in the figure given below.
Ans:
★ Situation – 1
★Parallel wires carrying currents in the same direction attract each other. Therefore, in this situation, the two wires attract each other.
6. White light is passed through the given arrangement of three glass prisms (X, Y, and Z) as shown in the figure given below.
ii) What is the role of prism Z?
Ans:
i) Yes / The spectrum of light forms on the screen
ii) Prism Z disperses this white light into 7 colours and hence we see the spectrum of light on the screen.
7. Correct statement with respect to magnetic field in the given diagram is,
(A) in P is more than in Q
(B) in Q is more than in P
(C) in R is more than in P and in O
(D) in P and in Q is equal.
Ans: (D) in P and in Q is equal.
8. In the given diagram, which angle is bigger among the angles r1, and r2? Give a reason.
★ Angle r2 is larger.
★ Because light speeds up and bends away from the normal line when exiting the glass into the air.
9. Observe the below given diagram of the human eye. Name the eye defect indicated in this diagram and mention the lens used to correct this defect.
Ans:
★ Myopia / Near sightedness
★ Concave lens
10. Observe the given diagram and answer the following questions:
a) What is the colour of the ray of light indicated as A ?
b) Predict the colour of the ray of light indicated as B. Justify your answer.
Ans:
★ A - Green, B - Green
★ There will be no dispersion
11. The given diagram represents the experiment conducted to observe the deviation of a beam of electrons when the beam enters the magnetic field perpendicularly. If the beam deviates in the direction out of the surface of the paper then
i) predict the pole of the magnet indicated as A
ii) state the principle that helps this prediction.
Ans:
★ A is the North Pole.
★ stretch the thumb, forefinger and middle finger of your left hand such that they are mutually perpendicular. Forefinger points in the direction of magnetic field and middle finger in the direction of current, then the thumb will point in the direction of motion.
12. Observe the given schematic diagram. What is the direction of force acting on the electron ? Justify your conclusion.
★ Into the paper
★ According to Fleming’s Left-Hand Rule
★ current opposite to electron flow.
13. Observe the circuit diagram given below. Answer the questions given.
ii) Mention the direction of magnetic field that forms around at the points 'X' and 'Y.
ii) State the rule that helps to decide the direction of magnetic field.
Ans:
i)
★ X → Anticlockwise
★ Y → Clockwise
ii) The right hand thumb rule states that if we hold a straight current carrying conductor with our right hand such that the thumb points in the direction of the current, then the curled fingers indicate the direction of the magnetic field lines.
14. Observe the following figure. Answer the question given below :
Whether this phenomenon can be observed on the moon surface? Justify the answer.
Ans:
★ No,
★ Since there is no liquid water or rain on the Moon's surface,
15. Observe the figure given below. Name the defect of the eye depicted in the figure. What causes this defect? How can this defect be corrected?
Ans:
★ Hypermetropia
Causes:
★ The focal length of the eye lens is too long
★ The eyeball has become too short
Correction:
★ convex lens
16. Identify the emergent ray in the given figure.
A) CD
(B) BC
(C) AB
(D) IJ
Ans. : (A) CD
17. Observe the given incomplete diagram.
18. In the given figure, AB is the incident ray, BC is the refracted ray and MN is the normal at the point of incidence. Which medium is more denser ? Why ?
Ans:
★ Medium 1 is more denser.
★ When a ray of light travels from rarer medium to denser medium, it always bends towards the normal.
19. Observe the diagrams given below :
(A) maximum in Q
(B) minimum in P
(C) more in P than in Q
(D) more in R than in Q
Ans. : (A) maximum in Q
20. Observe the below figure showing the refraction of light through a glass prism
Ans:
★ The angle represented as ∠x is called the Angle of Deviation.
★ formed due to the bending of light inside the prism.
21. Glass prisms A, B and C are arranged as shown in the figure given below. When a ray of white light is passed through prism A, does the spectrum of light form on the screen ? Give reason.
Ans. :
★ Yes / The spectrum of light forms on the screen.
★ Prism A disperses the white light into 7 colurs, Prism B recombines the 7 colours of the spectrum to form the white light and Prism C disperses this white light into 7 colours and hence we see the spectrum of light on the screen.
22. A person who has a defect of the eye as shown in the below figure purchases a spectacle having lens of – 2·0D power. Is this lens suitable to rectify the eye defect of that person ? Analyse.
★ This lens is not suitable for that person’s defect of eye.
★ Light rays from a closeby object are focussed at a point behind the retina.
★ Therefore it is farsightedness and it is corrected by using a convex lens of appropriate power in spectacle.
★ Lens of – 2·0 D power is a concave lens and that does not rectify this defect.
23. Observe the diagram.
The magnetic poles represented by P and Q respectively are (Sep - 2020)
(A) south ( ) and south (S)
(B) north ( N ) and south ( S )
(C) north (N) and north (N)
(D) south (S) and north (N)
Ans. : (A) south (S) and south (S)
24. Observe the figure and mention the direction of the force acting on the current carrying conductor AB. Name the rule that helped you to find the direction of the force.
Ans. :
★ Towards left / Towards the magnet ( Or towards north pole of the magnet )
★ Fleming’s left hand rule
25. Observe the circuit diagram given below. Mention the direction of magnetic field that forms around the point P and around the point Q
★ Anticlockwise at the point P.
★ Clockwise at the point Q.
26. Observe the given figures and answer the questions that follow :
i) Which of the above figures shows the correct direction of magnetic field ?
ii) Name and state the rule that helped to choose the correct figure.
Ans. :
i) Figure (b) shows the correct direction of magnetic field.
ii) Right hand thumb rule helps to choose the correct figure.
27. Observe the given diagram and answer the questions given below:
ii) Total State the law that helped to determine the direction of current.
Ans:
★ Electric current is flowing towards the X end of the straight conductor. OR Electric current is flowing from bottom to top of the straight conductor.
Right Hand Thumb Rule :
Imagine that you are holding a current-carrying straight conductor in your right hand such that the thumb points towards the direction of current ; then your fingers will wrap around the conductor in the direction of the field lines of the magnetic field.
CHEMISTRY
1.
Analyse the experiment expressed in the above figure. The molecular formulae of the solution ‘Y’ that gives a yellow colour precipitate by reacting with KI solution and the another product that forms here respectively are.
(A) Pb(NO3)2 and KNO3
(B) PbI2 and KNO3
(C) Pb(NO3)2 and KI
(D) Pb(NO3)2 and K2SO4
Ans: (B) PbI2 and KNO3
2. Another structure with the same molecular formula of the compound in the following structural formulas
Ans: (D)
3. What is the reason for the formation of brown coloured fume in the experiment shown through the below given figure?
The brown coloured fumes are due to the formation of Nitrogen dioxide (NO2) gas.
4. Correct the following incorrect electron dot structure of an unsaturated hydrocarbon and rewrite,
Ans:
5. Analyse the activity depicted in the figure given below. In this activity, when ferrous sulphate crystals are heated does the colour and crystalline nature of it remain same or not ? Support your answer with reason.
Ans:
★ colour and crystalline nature change.
★ due to loss of water of crystallisation
BIOLOGY
1. Observe the figure given below. The name of the part ‘X’ and its function is
(A) Neuron; transmits chemicals as electrical impulses
(B) synapse; transmits electrical signals generated at the axon terminal to the dendrite
(C) Neuron; transmits electrical impulses as chemicals
(D) synapse; transmits chemical signals generated at the axon terminal to the dendrite
Ans: (D) synapse; transmits chemical signals generated at the axon terminal to the dendrite
2. Observe the tropisms of plants expressed in the following figures A and B. What is the difference between the movements of these plants?
Ans:
Plant A : Nastic moment
Plant B : Trophic moment
3. A scientist cuts planaria as shown in the figure below. After regeneration how many planaria will remain here ?
Ans: One
4. Observe the structure given in the following figure. The type of tropic movement that helps the movement of ‘C’ towards ‘B’ here is,
(A) Phototropism
(B) Chemotropism
(C) Geotropism
(D) Hydrotropism
Ans: (B) Chemotropism
5. Observe the following figures. Which figure represents low rate of gaseous exchange ? Why ?
Ans:
Figure (a) represents a low rate of gaseous exchange because the stomatal pore is closed.
6. Observe the processes depicted in the given figures. Among the progenies, which of the process (i) causes variations ? (ii) causes similarities ?
(i) Variations: Figure 2
(ii) Similarities: Figure 1
7. Observe the figure below. The characteristic and function of the structure ‘X’ are respectively
(A) wall is absent and pollinates.
(B) it has a thick wall and grows into a new rhizopus.
(C) it has a thin wall and grows into a new rhizopus.
(D) it has a thick wall and pollinates.
Ans: (B) it has a thick wall and grows into a new rhizopus.
8. Observe the female reproductive structures given in figure A and figure B. The correct statement related to these figure is
(A) Fertilization of egg is possible in both of the structures
(B) Fertilization of egg is possible only in the structure of figure-B
(C) Fertilization of egg is possible only in the structure of figure-A
(D) Fertilization of egg is not possible in both of the structures
Ans: (C) Fertilization of egg is possible only in the structure of figure-A
9. Schematic representation of blood circulation in the mammals is given below
i) Name the blood vesseles ‘x’ and ‘y’
ii) Which blood vessel has valves ?
Ans. :
i) x = Artery y = Vein
ii) Vein has valves.
10. Diagrams given below represent hearts of three different animals. Observe it and answer the question.
Among these, which heart is helpful to the animals that require more energy ? Why ?
Ans:
★ Heart - 2
★ Oxygenated and deoxygenated blood will not mix together Efficient supply of oxygen to the body. Helpful to maintain body temperature.
11. Name the given structure. What is its general function ? Mention the function of the parts labelled as A and B. These structures in animals are said to be efficient ways to give quick responses. Why ?
Ans:
★ Reflex arc
★ It gives sudden action in response to the event happening in the environment.
A) Sensory neuron : It conducts the impulse of stimulus from receptor to the spinal cord.
B) Effectors : Which shows the sudden visible response. Reflex arcs have evolved in animals because the thinking process of brain is not fast enough in many animals. Mean while many animals have very little of the complex neuron network needed for thinking.
So it can function in the absence of true thought process and increase the chance of survival.
12. In the given figure of Cotyledon the parts labelled as A and B respectively are
(A) fruit, shoot
(B) primary shoot, primary root
(C) secondary root, primary shoot
(D) bud, leaf.
Ans: (B) primary shoot, primary root
13. Biological process that has been shown in the diagram is
(A) production of progenies by fragmentation method
(B) production of progenies by multiple fission method
(C) regeneration of tissues by development in specialised
cells
(D) asexual reproduction by vegetative propagation.
Ans. :
(C) regeneration of tissues by development in specialised cells
14. The flower that can undergo self pollination among below given figures of flower is
(A) ‘P’ only Total
(B) ‘R’ only
(C) Both ‘P’ and ‘R’
(D) ‘Q’ only
Ans. : (D) ‘Q’ only
15. Observe the figures of flowers given below :
Name the types of pollination that can occur in these two flowers. (May 2025)
Ans. :
Flower A : Self pollination.
Flower B : Cross pollination
16.
The reproduction methods expressed in both of the above figures are similar or different from each other? Write the justification to your answer.
Ans : The reproduction methods expressed in both of the above figures are different from each other.
Spirogyra:
★Spirogyra reproduces by fragmentation
★ breaks up into smaller pieces upon maturation and these pieces grow into new individuals.
Planaria:
★ Planaria reproduces by regeneration.
★can be cut into any number of pieces and each piece grows into a complete organism.
