List of top Questions asked in UP Board X

Describe Mendel's Laws.
In order to save the environment, describe the five types of ‘R’.
Write the electronic configuration of chlorine (atomic number 17). Explain its position in the periodic table and write its valency.

Write IUPAC names of the following compounds:

Explain with a drawing how hypermetropia is corrected. The near point of a hypermetropic eye is 75 cm. What is the focal length of the lens required to correct this defect? The near point of a normal eye is 25 cm.
On what factors does the resistance of a conductor depend? An electric bulb operated at 80 volts takes 10 amperes of current. How much resistance should be connected in series with the bulb to use it at 240 volts so that it takes the same current?
Define Kilowatt hour. How many Joules are equal to 1 kilowatt-hour? An electric kettle rated 220 volts, 2.2 kilowatts works for 3 hours. Calculate energy consumed and the current.
State the two ways to increase the force on a current-carrying conductor in a magnetic field. Name one device whose working depends on this effect. State Fleming’s left-hand rule with the help of a labelled diagram.
Draw a labelled ray diagram to show the formation of the image of an object placed between the pole and infinity by a convex mirror. State the properties of the image formed. Why do we prefer a convex mirror as a rear-view mirror in vehicles?
Sperms are formed in:
Alveoli occur in:
For the transport of water, plants have:
Normal blood pressure of a healthy human is:
Mendel is famous:
Which one of the following gives red colour with methyl orange?
An eco-friendly renewable source of energy is:
Who among the following is famous as the 'Water Man of India'?
Which one of the following ray diagrams (for a concave/diverging lens) is correct?
Pure air is:
Electric motor is a device which transforms:
On moving from left to right in the third period of the periodic table:
pH value of pure water is:
Alkene is:
The colour of white light which is deviated maximum on passing through the glass prism is:
Describe the female reproductive system of humans.