List of top Science Questions asked in UP Board X

Mendel is famous:
Who among the following is famous as the 'Water Man of India'?
Sperms are formed in:
Which one of the following gives red colour with methyl orange?
An eco-friendly renewable source of energy is:
Alveoli occur in:
For the transport of water, plants have:
Pure air is:
On moving from left to right in the third period of the periodic table:
Which one of the following ray diagrams (for a concave/diverging lens) is correct?
Electric motor is a device which transforms:
pH value of pure water is:
Alkene is:
Describe the female reproductive system of humans.
The human eye forms the image of an object at its:
The colour of white light which is deviated maximum on passing through the glass prism is:
The current passing through an electric kettle has been doubled. The heat produced will become:
A mirror producing a virtual image larger than the object is:
The most suitable material for making the core of an electromagnet is:
Write an essay on sustainable management of natural resources.
Explain homologous and analogous organs.
How many groups and periods are present in the Modern Periodic Table? In which groups are alkaline metals and inert elements placed in this periodic table?
What happens when (write only balanced chemical equation):

[(a)] CO\(_2\) gas is passed in lime water for a long time
[(b)] Dry lime reacts with dry Cl\(_2\) gas
[(c)] Gypsum is heated
[(d)] Sodium metal reacts with water
Comment upon nuclear and oceanic energy.
Write short notes on the following:

[(a)] Roasting
[(b)] Double Decomposition
[(c)] Corrosion