List of top Questions asked in UP Board

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 magnetic field inside a long, straight current carrying solenoid:
The frequency of alternating current (a.c.) supply in India is:
Arsenic element is:
Propane is:
(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 is digestion? Describe the process of digestion in humans with a diagram.
Write short notes on any two of the following:
(a) Fission
(b) Regeneration
(c) Budding
What are fossils? Explain their role as evidence for organic evolution.
What do you mean by alternative (non-conventional) or renewable energy sources? Describe any three renewable energy sources in detail.
Describe in detail the process of transportation of water, minerals and food in plants.
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:
On passing a ray of white light through a prism, the colour which has minimum deviation is:
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.
Explain the meaning of electromagnetic induction. Mention any two methods for producing induced current in a coil. State Fleming's right hand rule for finding the direction of induced current.
What is the use of an electric motor? Discuss the construction, working principle and working of an electric motor with the help of a labelled diagram.
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) \( \text{MgCl}_2 (aq) + 2\text{AgNO}_3 (aq) \rightarrow \text{Mg(NO}_3)_2 (aq) + 2\text{AgCl} (g) \)
(i) Write the name of reactant and product for the reaction: \[ \text{Zn} + \text{H}_2\text{SO}_4 \rightarrow \text{ZnSO}_4 + \text{H}_2 \uparrow \]
(ii) Write the reaction for thermal dissociation of ammonium chloride and name the substances formed.
Write IUPAC names for the following compounds:
Write the atomic number and valency of the following elements:
(i) Oxygen
(ii) Potassium