List of top Questions asked in UP Board X- 2025

Precipitation reaction is
The magnitude of magnetic force acting on a current carrying conductor in a uniform magnetic field does not depend on
Liquid metal at ordinary temperature is
Strong base is
O_2(g) is obtained on heating
The blue colour of the sky is due to the
The image formed by a mirror is virtual, erect and longer than the object, then the mirror will be
The refractive index of glass is 1.5. The speed of light in air is \(3 \times 10^8\) m/s. The speed of light in glass will be
If the electric current passing through a fixed resistor is halved, then the heat produced in it will become
The unit of power of a lens is
Write a note on the following:
(i) Gregor Johann Mendel
(ii) Reflex arc
Write a note on the following:
(i) Spore formation in Rhizopus
(ii) Seed germination
Describe co-ordination in plants with examples.
Describe the digestive system of human with diagram.
What are the trophic levels? Give an example of a food chain and state the different trophic levels in it.
(ii) Write chemical reaction for manufacture of bleaching powder and its two applications.
(i) What are Exothermic and Endothermic reactions? Explain with example.
Write a short note on the following:
(i) Importance of pH in daily life
(ii) Micelle
(iii) Metals and Non-metals
(ii) Why fuse is used in domestic electrical circuits?
(i) Explain Corrosion. Write its two examples.
(iii) State the law to find the direction of magnetic field produced due to straight current carrying wire.
ii) Write IUPAC names for the following compounds:
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(i) Draw magnetic lines of force due to a current carrying solenoid.
(ii) Mention two factors which affect the magnetic field produced by a straight current carrying conductor.
(ii) What do you understand by the heating effect of electric current? In a heater of resistance \(10 \, \Omega\), a current of \(15 \, \text{A}\) is flowing for 30 minutes. What will be the amount of heat produced in the heater?