List of top Science Questions asked in UP Board

Explain addition reaction with example.
Explain the phenomenon of dispersion of white light through a prism by making a diagram.
What is Ohm's Law? Explain the verification of this law with the help of a circuit diagram.
What is the phenomenon of electromagnetic induction? Explain Faraday’s experiment associated with this phenomenon.
Explain the following:

Cleansing action of soap
Calcination and Roasting
Activity series of metals
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 production of a magnetic field due to current in a conductor by making a diagram.
Write chemical equations of two chemical properties of Ethanoic Acid
A common unisexual male flower doesn’t have:
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 pair is used in the reaction of photosynthesis?
Insulin is secreted by:
On burning, fossil fuel gives:
The principle of organic evolution was propounded by:
The pH value of pure water remains:
Which of the following is a producer?
The chemical formula of Plaster of Paris is:
The functional group in Aldehyde is:
Which of the following is a combustion reaction?
On going down a group, the size of an atom increases because:
The IUPAC name of \( \text{CH}_3\text{CH}_2\text{OH} \) is:
If electric power and resistance are expressed as \( P \) and \( R \) respectively, then electric current is expressed as:
What is the total resistance of two resistors, \( R \) and \( 2R \), when they are connected in parallel?
Speed of light in medium (1) and medium (2) are \( v_1 \) and \( v_2 \) respectively, then the refractive index of medium (1) with respect to medium (2) is: