List of top Questions asked in CBSE Class X- 2025

Fill in the blanks by choosing the correct options to conclude the report: The report concludes that _____ learners have _____ knowledge of astrophysics.
A tall pea plant with round seeds (TTRR) is crossed with a short pea plant with wrinkled seeds (ttrr). The \( F_1 \) generation will be:
Assertion (A) : In large animals, oxygen can reach different parts of the animal's body easily.
Reason (R) : Respiratory pigments take up oxygen from the air and carry it to body tissues.
Which one of the following is not an excretory product in plants?
The basic filtration unit of the excretory system in human beings is:
In human alimentary canal, the digestive juice secreted by the gastric glands are:
Consider the following food chain:
Grass \( \rightarrow \) Grasshopper \( \rightarrow \) Frog \( \rightarrow \) Snake \( \rightarrow \) Eagle
If the amount of energy available at third trophic level is 50 kJ, the available energy at the producer level was:
Juice of tamarind turns blue litmus to red. It is because of the presence of a chemical compound called:
In order to prepare dry hydrogen chloride gas in a humid atmosphere, the gas produced is passed through a guard tube (drying tube) which contains:

Select from the following a statement which is not true about the burning of magnesium ribbon in air:

In which one of the following situations a chemical reaction does not occur?

The colour of the solution observed after about 1 hour of placing iron nails in copper sulphate solution is: 

Assertion (A): Concentrated nitric acid is diluted by adding water slowly to acid with constant stirring.
Reason (R): Concentrated nitric acid is easily soluble in water.
In the light of the above statements, choose the most appropriate answer from the options given below:
In the given graph, the polynomial \(p(x)\) is shown. Number of zeroes of \(p(x)\) is
polynomial p(x)
If $\dfrac{2\tan30^\circ}{1+\tan^2 30^\circ} = \dfrac{2\tan30^\circ}{\sqrt{1 - \tan^2 30^\circ}}$, then $x : y =$
A peacock sitting on the top of a tree of height 10 m observes a snake moving on the ground. If the snake is $10\sqrt{3}$ m away from the base of the tree, then angle of depression of the snake from the eye of the peacock is
In a right triangle ABC, right-angled at A, if $\sin B = \dfrac{1}{4}$, then the value of $\sec B$ is
If \(\sin \theta = \frac{1}{9}\), then \(\tan \theta\) is equal to
If \(x = \cos 30^\circ - \sin 30^\circ\) and \(y = \tan 60^\circ - \cot 60^\circ\), then
If the length of the shadow of a tower is \(\sqrt{3}\) times its height, then the angle of elevation of the sun is
If \(\sqrt{3} \sin \theta = \cos \theta\), then value of \(\theta\) is
In \(\triangle ABC, \angle B = 90^\circ\). If \(\frac{AB}{AC} = \frac{1}{2}\), then \(\cos C\) is equal to

Given $\triangle ABC \sim \triangle PQR$, $\angle A = 30^\circ$ and $\angle Q = 90^\circ$. The value of $(\angle R + \angle B)$ is

The distance of point \((a, -b)\) from the \(x\)-axis is
The point \((3, -5)\) lies on the line \(mx - y = 11\). The value of \(m\) is