Class 9 previous year questions (PYQ)

Iron filings and sulphur were mixed together and divided into two parts,$A$ and $B$. Part $A$ was heated strongly while Part $B$ was not heated. Dilute hydrochloric acid was added to both the parts and evolution of gas was seen in both the cases. How will you identify the gases evolved?

Match the names of the scientists given in column $A$ with their contributions towards the understanding of the atomic structure as given in column $B$.

Which connective or transitional phrase creates seamless flow when discussing 'Descriptive Paragraph (Person, Event, Situation)' in an essay?

Which part of speech or syntactical component is central to 'Poetry: The Road Not Taken, Wind, Rain on the Roof, Lake Isle of Innisfree, A Legend of the Northland, No Men Are Foreign, On Killing a Tree, A Slumber Did My Spirit Seal'?

Differentiate the following activities on the basis of voluntary $(V)$ or involuntary $(IV)$ muscles:
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Differentiate the following activities on the basis of voluntary $(V)$ or involuntary $(IV)$ muscles:
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Find $p(0)$,$p(1)$,and $p(-2)$ for the following polynomial:
$p(x) = 10x - 4x^{2} - 3$

$A$ man weighing $70 \,kg$ carries a weight of $10 \,kg$ to the top of a tower $100 \,m$ high. Calculate the work done.

Identify the diseases caused by protozoans:

Gravitational force on the surface of the moon is only $\frac{1}{6}$ as strong as the gravitational force on the earth. What is the weight in newtons of a $10\, kg$ object on the moon and on the earth?

Directions: In the question below, a statement of Assertion (A) is followed by a statement of Reason (R). Choose the correct option:

Assertion (A): An agreement entered into without lawful consideration is void ab initio under Section 25 of the Indian Contract Act 1872.

Reason (R): Lawful consideration is a mandatory statutory pillar of contractual enforceability under the legal maxim *ex nudo pacto non oritur actio*.

Why do we hear the sound produced by the humming bees while the sound of vibrations of a pendulum is not heard?

List applications of any three isotopes in various fields.

Use the Factor Theorem to determine whether $g(x)$ is a factor of $p(x)$ in each of the following cases: $p(x) = x^3 + 3x^2 + 3x + 1$,$g(x) = x + 2$.

In $\Delta ABC$,$P$ and $Q$ are the midpoints of $AB$ and $AC$ respectively. If $BC + PQ = 21 \text{ cm}$,then find the length of $BC$.

What would be the effect on the weight of a body if the earth stopped rotating?

What literary device or rhetorical technique is exemplified in the study of 'The Snake and the Mirror'?

If $\sqrt{2}=1.414$ and $\sqrt{3}=1.732,$ find the value of $\frac{4}{3\sqrt{3}-2\sqrt{2}}+\frac{3}{3\sqrt{3}+2\sqrt{2}}.$

Pick the odd one out and justify your choice by giving reasons:
$(a)$ Moss,Fern,Pinus,Spirogyra.
$(b)$ Sea Cucumber,Octopus,Feather Star,Starfish.

$(a)$ Compare a block of wood,water,and air on the basis of the following:
$(i)$ Compressibility
$(ii)$ Particle motion
$(iii)$ Rigidity
$(b)$ Account for the following:
$(i)$ Gases exert pressure on the walls of the container.
$(ii)$ Liquids can be called fluids.

Which connective or transitional phrase creates seamless flow when discussing 'Subject-Verb Concord' in an essay?

Nerve cell does not contain

Study the speed-time graph of a car below and answer the following questions:
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Factorise:
$x^{2}+9x+18$