List of top Science Questions asked in UP Board

Which country is called ‘country of winds’?
Moving towards right in Modern Periodic Table:
Which type of reaction is the following? \[ \mathrm{Fe_2O_3 + 2Al \rightarrow Al_2O_3 + 2Fe} \]
pH value of pure water at 25°C temperature is:
Which is not synthesized during the process of photosynthesis?
Bile is synthesized in:
Number of chambers in human heart is:
A concave lens is used:
The amount of light entering in the eye is controlled by:
The correct formula for electric power in an electric circuit is:
The frequency of alternating current (a.c.) supply in India is:
Arsenic element is:
The magnetic field inside a long, straight current carrying solenoid:
Propane is:
What are fossils? Explain their role as evidence for organic evolution.
The image formed by a concave mirror is real, inverted and of the same size as the object. The position of the object will be:
Write short notes on any two of the following:
(a) Fission
(b) Regeneration
(c) Budding
What is digestion? Describe the process of digestion in humans with a diagram.
On passing a ray of white light through a prism, the colour which has minimum deviation is:
Describe in detail the process of transportation of water, minerals and food in plants.
(a) Write two uses of Bleaching Powder
(b) What is corrosion? Write two methods for its prevention.
(c) Write one use of Plaster of Paris.
What do you mean by alternative (non-conventional) or renewable energy sources? Describe any three renewable energy sources in detail.
Explain the power of accommodation of the eye. Draw a ray diagram for image formation by a convex lens when (a) the object is at a distance of 2f, (b) the object is in between 2f and infinity.
Mention any two advantages of parallel combination of resistances. In the given circuit, find the value of current in each resistance and the total current in the circuit.
Balance the following equations:
(i) \( \text{H}_2\text{SO}_4 (aq) + \text{NaOH} (aq) \rightarrow \text{Na}_2\text{SO}_4 (aq) + \text{H}_2\text{O} (l) \)
(ii) \( \text{MgCl}_2 (aq) + 2\text{AgNO}_3 (aq) \rightarrow \text{Mg(NO}_3)_2 (aq) + 2\text{AgCl} (g) \)