26,619 previous year Class 9 questions, grouped by year, with answers and solutions.
The median of the data $78, 56, 22, 34, 45, 54, 39, 54, 84$ is
Differentiate between rough and smooth endoplasmic reticulum. How is endoplasmic reticulum important for membrane biogenesis?
Construct the following angle and verify by measuring it with a protractor: $105^{\circ}$
For increasing production,what is common in poultry,fisheries and bee-keeping?
The diameter of the moon is approximately one-fourth of the diameter of the earth. What fraction of the volume of the earth is the volume of the moon?
The diameter of the moon is approximately one-fourth of the diameter of the earth. What fraction of the volume of the earth is the volume of the moon?
How is heating of sugar and heating of ammonium chloride different from each other? Explain your answer.
If $(2,3)$ is a solution of the equation $7x - 3y = a$ and $(a, a+1)$ is a solution of the equation $2x + y = b$,find the values of $a$ and $b$.
Well-defined nucleus is absent in
In a survey of $364$ children aged $19-36$ months,it was found that $91$ liked to eat potato chips. If a child is selected at random,the probability that he/she does not like to eat potato chips is:
In English Grammar & Language Study, what is the core function of 'Kathmandu' in 'Beehive (Literature)'?
$AIDS$ cannot be transmitted by:
State whether the following statement is True or False. Justify your answer.
The edges of a surface are curves.
What is the function of:
$
Refer to the Case Study 'Case Study: Hazardous Enterprise and Supreme Court Doctrine of Absolute Liability' to answer:
Which statutory enactment was passed by the Indian Parliament following the Bhopal gas disaster and oleum gas leak?
$(a)$ Give two examples of shellfishes.
$(b)$ Mention the names of four marine fish of high economic value.
Simplify the following:
$(\sqrt{3}-\sqrt{2})^{2}$
काव्य अथवा गद्य में 'संवाद लेखन' के प्रयोग से कौन-सा सौंदर्य बढ़ता है?
$(a)$ 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.
Factorise:
$3x^{3}-x^{2}-3x+1$
An athlete runs some distance before taking a long jump,because
Find the degree of the polynomial given below: $2$
$
How do biotic and abiotic factors affect crop production?
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