List of top Science Questions asked in UP Board X

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 short note on the following:
(i) Importance of pH in daily life
(ii) Micelle
(iii) Metals and Non-metals
Write a note on the following:
(i) Spore formation in Rhizopus
(ii) Seed germination
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.
(i) What are Exothermic and Endothermic reactions? Explain with example.
Describe co-ordination in plants with examples.
(ii) Write chemical reaction for manufacture of bleaching powder and its two applications.
(ii) Why fuse is used in domestic electrical circuits?
(i) Draw magnetic lines of force due to a current carrying solenoid.
(iii) State the law to find the direction of magnetic field produced due to straight current carrying wire.
(i) Explain Corrosion. Write its two examples.
ii) Write IUPAC names for the following compounds:
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(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?
(i) Mention any two properties of magnetic field lines.
(i) Clarify the meaning of power of accommodation of eye lens of human eye. Where is the image formed by the eye lens?
(ii) Mention two factors which affect the magnetic field produced by a straight current carrying conductor.
(i) State Ohm's law. What will be the value of current and potential difference at the ends of each resistance in the given circuit?
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Which of the following is an animal hormone?
Which of the following is top carnivore?