Class 10 Maharashtra Exam Prep
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🎯 Exam Preparation Kit
Class 10 Maharashtra Exam Prep
English 48 leveled MCQs Free
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5 marks Long answer
i) What is a selenoid? Draw neat figures and name various components.
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A solenoid is a coil of wire that generates a magnetic field when electric current passes through it. Components include wire, core, and terminals.
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4 marks Medium answer
What do you mean by dispersion of light? What is a spectrum of light? Name the different colours of light in the proper sequence in the spectrum of white light.
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Dispersion is the splitting of light into different colors; the spectrum includes red, orange, yellow, green, blue, indigo, and violet.
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4 marks Medium answer
If the speed of light in a medium is 1.5 × 10^8 m/s. What is the absolute refractive index of the medium? (Speed of light in vacuum = 3 × 10^8 m/s)
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The absolute refractive index is 2.
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3 marks Medium answer
i) Identify the type of chemical reaction given below.
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The reaction is a displacement reaction.
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3 marks Medium answer
ii) Identify the type of chemical reaction given below.
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This is a combination reaction.
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3 marks Medium answer
iii) Identify the type of chemical reaction given below.
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This is a decomposition reaction.
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3 marks Medium answer
1) We see the sun even before it emerges above the horizon.
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Due to refraction of light in the atmosphere.
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3 marks Medium answer
2) It is recommended to use air tight container for storing oil for long time.
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To prevent oxidation and rancidity.
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3 marks Medium answer
3) In the electric equipment producing heat e.g iron, electric heater, boiler, toaster etc, an alloy such as nichrome is used, not pure metals.
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Nichrome has higher resistance and can withstand high temperatures.
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3 marks Medium answer
1) What is free fall? When is it possible?
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Free fall is the motion of an object under the influence of gravity alone, possible when air resistance is negligible.
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3 marks Medium answer
i) Identify elements A and B.
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Element A is Sodium (Na) and Element B is Chlorine (Cl).
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3 marks Medium answer
ii) Which element is more electropositive? Explain with reason.
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Element A (Sodium) is more electropositive due to its lower electronegativity.
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3 marks Medium answer
i) Name the phenomenon shown in the figure.
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The phenomenon is buoyancy.
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3 marks Medium answer
ii) Define the above phenomenon.
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Buoyancy is the upward force exerted by a fluid on an object immersed in it.
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1 marks Short answer
On which rule is the working of the above device based?
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The device works based on the principle of electromagnetism.
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1 marks Short answer
Give any two uses of this device.
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Used in electric motors and generators.
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1 marks Short answer
i) State Newton's universal law of gravitation.
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Every particle attracts every other particle with a force proportional to the product of their masses and inversely proportional to the square of the distance between them.
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1 marks Short answer
ii) State the mathematical equation for the law.
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F = G \frac{m_1 m_2}{r^2}
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1 marks Short answer
iii) What will happen to gravitational force, if mass of one of the objects is doubled?
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The gravitational force will double.
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1 marks Short answer
i) What is the name of the given apparatus?
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The apparatus is called a calorimeter.
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1 marks Short answer
ii) Which phenomenon is studied with the help of this apparatus?
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The phenomenon of heat transfer.
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1 marks Short answer
iii) What are the final temperatures in thermometers T1 and T2?
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Final temperatures depend on the heat transfer but typically equalize.
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1 marks Short answer
iv) At what temperature the density of water is maximum?
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At 4°C.
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1 marks Short answer
v) Give one example of the above phenomenon in nature.
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Ice floating on water.
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1 marks Short answer
i) What is the atomic number of this element?
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The atomic number is 12.
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1 marks Short answer
ii) What is the group of this element?
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It belongs to Group 2.
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1 marks Short answer
iii) To which period does this element belong?
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It belongs to Period 3.
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1 marks Short answer
i) Identify the type of lenses used in her spectacles.
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Concave lenses.
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1 marks Short answer
ii) Identify the defect of vision Surabhi is suffering from.
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Myopia (nearsightedness).
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1 marks Short answer
iii) Find the focal length of the lenses used in her spectacles.
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Focal length is -2 m.
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1 marks Short answer
i) Which element has maximum specific heat capacity? Justify.
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Water has maximum specific heat capacity due to its high heat absorption capacity.
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1 marks Short answer
ii) Which element has minimum specific heat capacity? Justify.
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Lead has minimum specific heat capacity due to its low heat absorption.
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1 marks Short answer
iii) Define specific heat of object.
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Specific heat is the amount of heat required to raise the temperature of 1 kg of a substance by 1°C.
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1 marks Short answer
a) Identify the device shown in the figure.
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The device is a DC motor.
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1 marks Short answer
4) Name the instrument used to observe bacteria, cells and microorganisms.
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The instrument is a microscope.
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1 marks Short answer
Match the columns.
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Mass matches with c) kg.
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1 marks Short answer
i) Position of the object
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Beyond 2F1.
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1 marks Short answer
ii) Position of the image
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Between F2 and 2F2.
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1 marks Short answer
iii) Size of the image
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The image is larger than the object.
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1 marks Short answer
iv) Nature of the image
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The image is real and inverted.
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1 marks Short answer
1) Lithium (Li), ___ and Potassium (K) is Dobereiner's triad.
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Sodium (Na)
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1 marks Short answer
2) If a ray of light passes from a denser medium to a rarer medium in a straight line, the angle of incidence must be __.
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0°
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1 marks Short answer
3) When ___ is passed through fresh lime water, it turns milky.
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CO2
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1 marks Short answer
4) The ___ controls the amount of light entering the eye.
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pupil
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1 marks Short answer
5) When current I flows through a circuit with resistance R, the heat produced in the resistor in time t will be __.
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I^2Rt
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1 marks Short answer
Find the odd one out.
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Insulation is the odd one out.
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1 marks Short answer
Identify the law from the given figure.
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This is the right-hand thumb rule.
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1 marks Short answer
Write the correlation.
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BeO correlates with BeCl2.
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