List of top Science Questions asked in UP Board X

Write chemical equation for obtaining mercury from cinnabar.

Write one main function of Xylem in plants.
In which organ of the body is Copper replaced?
On which plant did Mendel perform his experiment?
Give examples of homologous organs.
Describe double circulation in human beings.
Write short notes on the following:

Conservation of natural resources
Regeneration
Describe the structure of the nephron in the kidney. How does it function?
Write short notes on the following:

Autotrophic nutrition
Transpiration
Chipko movement
Explain addition reaction with example.
Explain the following by giving examples:

Importance of pH in daily life
Exothermic chemical reactions
How will you obtain the following? (Write chemical equations)

Washing Soda from Baking Soda
Plaster of Paris from Gypsum
Explain the following:

Cleansing action of soap
Calcination and Roasting
Activity series of metals
What is Ohm's Law? Explain the verification of this law with the help of a circuit diagram.
Write chemical equations of two chemical properties of Ethanoic Acid
Explain the production of a magnetic field due to current in a conductor by making a diagram.
Explain the phenomenon of dispersion of white light through a prism by making a diagram.
What is the phenomenon of electromagnetic induction? Explain Faraday’s experiment associated with this phenomenon.
Which of the following pair is used in the reaction of photosynthesis?
Insulin is secreted by:
On burning, fossil fuel gives:
A common unisexual male flower doesn’t have:
The principle of organic evolution was propounded by:
Draw a ray diagram in order to obtain a virtual image of an object by a concave mirror. Write down any one use of this mirror.
Which of the following is a combustion reaction?
Which of the following is a producer?
The chemical formula of Plaster of Paris is:
The pH value of pure water remains: