List of top Questions asked in Bihar Board XII

What is equivalent lens? Derive an expression for equivalent focal length of two lenses of focal lengths \(f_1\) and \(f_2\) kept at a distance \(d\).
By which of the following is sugarcane sown?
Describe the process of sex-determination in honeybees.
Have you .................. Amrita?
( Choose the correct option )
Who was in favour of Partyless Democracy?
The distance between two charges is made half and one of the charges is also halved. The force acting between the two will become as compared to previous value.
"I have a dream that my four little children will one day live in a nation where they will not be judged by the colour of their skin but by the content of their character."
Who were known as the University Wits ?
Write an application to the Principal asking him / her for leave to attend a workshop on Yoga.
A variety of music .................. available here.
( Choose the correct option )
Is it possible to overload a destructor ? Give reason.
Find the derivative of \[ \frac{d}{dx} \left( \lim_{n \to 1} \frac{x^n - 1}{n+1} \right). \]
Why is ethyl alcohol not dried by anhydrous CaCl2?
Indian Civilization and Culture
Why is PCl\(_5\) a known compound, but NCl\(_3\) is not?
In resonance condition, the frequency of L-C circuit is
Differentiate between Methanoic acid and Ethanoic acid.

Translate any five into English: 

Clean India Movement
An electric dipole is held in a uniform electric field. The dipole is aligned parallel to the electric field. Find the work done in rotating it through an angle of 180°.
Which state had the highest percentage of urban population in India according to 2011 Census?
Example of adulteration is
Which metal was first used by humans?
Which of the following is the secondary function of commercial banks?
Into how many periods has Marshall divided production time on the basis of supply?