List of top Questions asked in CBSE Class X

Assertion (A) : A hormone called abscisic acid inhibits growth in plants.
Reason (R) : The role of auxins is opposite to that of abscisic acid in plants.
The shape of magnetic field lines produced (i) inside a solenoid (ii) around a straight conductor, both carrying current of the same magnitude are, respectively :

The resistance of a wire does not depend on its :

A material used for making heating elements of electrical heating devices should have :
The organism in which an outgrowth on the parent body develops into a new individual is :
Which one of the following metals is malleable and a poor conductor of electricity ?
In the electrolysis of water, if the mass of the gas collected at the anode is $m_a$ and the mass of the gas collected at the cathode is $m_c$, the value of $\frac{m_c}{m_a}$ is :
A concave lens of focal length 15 cm forms an image 10 cm from the lens. How far is the object placed from the lens? Draw the ray diagram.
Why are books referred to as a man’s best companion? Which is your favourite book and why? Write a paragraph about that book.
Do you think books are being replaced by the electronic media? Can we do away with books altogether?
If you were in Noodle’s place, how would you handle Think-Tank’s mistakes?
Noodle avoids offending Think-Tank but at the same time he corrects his mistakes. How does he manage to do that?
What guesses are made by Think–Tank about the books found on earth?
Who tried to invade the earth in the twenty-first century?
Why was the twentieth century called the ‘Era of the Book’?
Bholi’s real name is Sulekha. We are told this right at the beginning. But only in the last but one paragraph of the story is Bholi called Sulekha again. Why do you think she is called Sulekha at that point in the story?
Why did Bholi at first agree to an unequal match? Why did she later reject the marriage? What does this tell us about her?
How did Bholi’s teacher play an important role in changing the course of her life?
Bholi had many apprehensions about going to school. What made her feel that she was going to a better place than her home?
Why does the marriage not take place?
Why do Bholi’s parents accept Bishamber’s marriage proposal?
Does she find her teacher different from the people at home?
Does Bholi enjoy her first day at school?
For what unusual reasons is Bholi sent to school?
Why is Bholi’s father worried about her?