10th Science Important 2 Mark Question Paper

St. Britto Hr. Sec. School - Madurai

10th Science Important 2 Mark Question Paper-Aug 2020

Time : 2.00 Hours

Part - A

Generic 2 - Answer All Question

What are the Functions of adrenal medullary hormones ?

What is Abuse?

What does the term "ion" mean?

Two students perform the experiments on series and parallel combinations of two given resistors R_1 and R_2 and plot the following V-I graphs.

Weight of a person inside the lift while at rest is 50 N. What is the weight he feels when lift
moves up with an acceleration of 9.8 ms^-2.

Wheii your friend is sitting in a dark room along with others, which characteristic of sound helps you to identify him?

Define 1 dyne.

What is Sacrificial metal?

What is the significance of fertilization?

Mention the artery which supplies blood to the heart muscle.

Differentiate soaps and detergents.

Write a note on radiation hazards.

Mention the physiological effects of ABA.

Write a note on mineralocorticoids

What is Electroplating?

Explain medium and give any two examples.

What is Linear momentum?

What is Bicollateral ?

State applications of convex lenses

What is Galvanization?

A hot plate of an electric oven connected to a 220 V line has two resistance coils A and B, each of 24 U resistance, which may be used separately, in series, or in parallel What are the currents in the three cases?

Explain Electrolytic decomposition reaction.

What is Sprite?

What is the essential difference between an electron and a beta ray?

The colour of the sun is reddish during the sun rise and sunset. Explain why?

How does the sound produced by a vibrating object in a medium reach your ears?

List the difference between Dicot and Monocot stem.

The following table gives the resistivity of three samples:

Sample: A B C

Resistivity: 1.6x10^-8Ωm 5.1x10^-8Ωm 10.6x10^-8Ωm

Which of them is suitable for heating elements of electrical appliances and why?

Differentiate diploid and haploid condition.

Define genetic engineering.

What are grana?

Look at the diagram and predict the ore which is being concentrated?

Define ionic product of water

How does the repulsive force between the two deuterium atoms overcome during nuclei fusion process?

Part - B

Assertion and reason - Answer All Question

Assertion : Radium is a natural radioactive element.
Reason : Radium emits α, (β, γ rays without any human intervention.

Assertion: Velocity of sound is maximum in solids than liquid and gases.
Reason: Gases are least elastic in nature.
(a) Both assertion and reason are true and reason is the correct explanation of assertion.
(b) Both assertion and reason are true but reason is not the correct explanation of assertion.
(c) Assertion is true but reason is false.
(d) Assertion is false but reason is true.

Assertion: The sum of the clockwise moments is equal to the sum of the anticlockwise moments.
Reason: The principle of conservation of momentum is valid if the external force on the system is zero.
(a) If both the assertion and the reason are true and the reason is the correct explanation of assertion.
(b) If both the assertion and the reason are true, but the reason is not the correct explanation
of the assertion.
(c) If the assertion is true, but the reason is false.
(d) If the assertion is false, but the reason is true.

Assertion : The ability of the brain is determined by the presence of essential fatty acids. Reason : They are obtained from fish, green leafy vegetables, almond etc.
(a) Both assertion and reason are true and reason is correct explanation of assertion.
(b) Both assertion and reason are true but reason is not the correct explanation of assertion.
(c) Assertion is true but reason is false.
(d) Both assertion and reason are false.

Assertion : The universal gravitational constant is same as acceleration due to gravity.
Reason : Gravitational constant & acceleration due to gravity have different units(a) Both assertion and reason are true and reason is correct explanation of assertion
(b) Both assertion and reason are true but reason is not the correct explanation of assertion.
(c) Assertion is true but reason is false
(d) Assertion is false but reason is true

Assertion : Action and reaction forces balance each other.
Reason : Both forces act always on two different bodies.
(a) Both assertion and reason are true and reason is correct explanation of assertion
(b) Both assertion and reason are true but reason is not the correct explanation of assertion.
(c) Assertion is true but reason is false
(d) Assertion is false but reason is true

ssertion : Atomicity of Sulphur is 8
Reason : 1 mole of an element contains 6.023 x 10²³atoms
(a) Both Assertion and Reason are true and Reason is correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
(c) Assertion is false but reason is true.
(d) Assertion is true but reason is false.

Direction: In each of the following questions a statement of assertion (A) is given and a corresponding statement of reason (R) is given just below it. Mark the correct statement as.

Assertion : Cretinism is caused due to decreased secretion of the thyroid hormones.

Reason: The parathyroid glands are four small oval bodies

Assertion : The cloud in sky generally appears white.
Reason : Due to diffraction clouds [The light is scattered by the water droplets inside the cloud.
(a) Both assertion and reason are true and reason is correct explanation of assertion
(b) Both assertion and reason are true but reason is not the correct explanation of assertion
(c) Assertion is true but reason is false
(d) Both assertion and reason are false

Assertion : Aluminum hydroxide is not an alkali
Reason : An alkali is a base which dissolves in water
(a) Both Assertion and Reason are true and Reason is correct explanation of Assertion.
(b) Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
(c) Assertion is correct but Reason is false.
(e) Both Assertion and Reason are false

InstaQB

Institutions

12th Standard English Medium

12th Standard Tamil Medium

11th Standard English Medium

11th Standard Tamil Medium

10th Standard English Medium

9th Standard English Medium

8th Standard English Medium

7th Standard English Medium

Class XII

Class XI

12Th Standard

11Th Standard

10Th Standard

9Th Standard

10th Science Important 2 Mark Question Paper

St. Britto Hr. Sec. School - Madurai

10th Science Important 2 Mark Question Paper-Aug 2020

Part - A

Generic 2 - Answer All Question

What are the Functions of adrenal medullary hormones ?

What is Abuse?

What does the term "ion" mean?

Two students perform the experiments on series and parallel combinations of two given resistors R_1 and R_2 and plot the following V-I graphs.

Weight of a person inside the lift while at rest is 50 N. What is the weight he feels when lift moves up with an acceleration of 9.8 ms-2.

Wheii your friend is sitting in a dark room along with others, which characteristic of sound helps you to identify him?

Define 1 dyne.

What is Sacrificial metal?

What is the significance of fertilization?

Mention the artery which supplies blood to the heart muscle.

Differentiate soaps and detergents.

Write a note on radiation hazards.

Mention the physiological effects of ABA.

Write a note on mineralocorticoids

What is Electroplating?

Explain medium and give any two examples.

What is Linear momentum?

What is Bicollateral ?

State applications of convex lenses

What is Galvanization?

A hot plate of an electric oven connected to a 220 V line has two resistance coils A and B, each of 24 U resistance, which may be used separately, in series, or in parallel What are the currents in the three cases?

Explain Electrolytic decomposition reaction.

What is Sprite?

What is the essential difference between an electron and a beta ray?

The colour of the sun is reddish during the sun rise and sunset. Explain why?

How does the sound produced by a vibrating object in a medium reach your ears?

List the difference between Dicot and Monocot stem.

The following table gives the resistivity of three samples: Sample: A B C Resistivity: 1.6x10-8Ωm 5.1x10-8Ωm 10.6x10-8Ωm Which of them is suitable for heating elements of electrical appliances and why?

Differentiate diploid and haploid condition.

Define genetic engineering.

What are grana?

Look at the diagram and predict the ore which is being concentrated?

Define ionic product of water

How does the repulsive force between the two deuterium atoms overcome during nuclei fusion process?

Part - B

Assertion and reason - Answer All Question

Assertion : Radium is a natural radioactive element. Reason : Radium emits α, (β, γ rays without any human intervention.

Part - C

Odd one out - Answer All Question

Cu2O, Cu2S, Al2O3, CuFeS2

N2, CH4, SO3, H2O

Titanium, Chromium, Gold, Manganese

He, H, Ne, Ar

ZnCO3, Al2O3.2H2O, CaCO3, FeCO3.

Fe2O3, Fe3O3, Fe3O4, FeS2, Cu2O

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Weight of a person inside the lift while at rest is 50 N. What is the weight he feels when lift
moves up with an acceleration of 9.8 ms^-2.

The following table gives the resistivity of three samples:

Sample: A B C

Resistivity: 1.6x10^-8Ωm 5.1x10^-8Ωm 10.6x10^-8Ωm

Which of them is suitable for heating elements of electrical appliances and why?

Assertion : Radium is a natural radioactive element.
Reason : Radium emits α, (β, γ rays without any human intervention.

Cu₂O, Cu₂S, Al₂O3, CuFeS₂

N₂, CH₄, SO_3, H₂O

ZnCO₃, Al₂O₃.2H₂O, CaCO₃, FeCO₃.

Fe₂O₃, Fe₃O₃, Fe₃O₄, FeS₂, Cu₂O