List of practice Questions

What is the working principle of an alternating current generator? Describe its construction and working method with the help of a diagram.
Write the structural formulae of the following compounds:
(a) Propanal
(b) 2-Methyl pentanoic acid
(c) Propene
(d) 2-Methyl butan-2-ol (often written as 2-methyl-2-butanol)
Na, Mg, and Al are the elements in which the numbers of valence electrons are one, two, and three respectively. (a) Which of these elements has the maximum atomic radius? (b) Which of these elements is the least reactive? Answer each with the reason.
Write notes on the following:
What are Mendel's laws? Explain them with suitable diagrams.
Draw a labelled diagram of longitudinal section (L.S.) of gynoecium to show the fertilization in flowers and describe it.
Why is conservation of forest necessary? Explain.
Which is not a part of the female genital system in humans from the following?
The autotrophic mode of nutrition requires:
The examples of homologous organs are:
Asexual reproduction takes place through budding in:
Who proposed the Natural Selection Theory?
A convex mirror of radius of curvature 2 metres is attached to a motor bike to watch any other vehicle coming from behind. Calculate the location and position of a vehicle which is at 4 metres behind the bike as seen in the mirror. Also explain by the ray diagram.
A person suffering from short-sightedness can see up to 100 meters. Calculate the nature and the focal length of the lens in order to correct this defect so that he can see objects at infinity hence correct vision. Also, draw the ray diagram.
What is Ohm's law? Explain by drawing the associated circuit diagram. Also discuss the terms on which the resistance of an electrical conductor depends.
The alkene in the following is:
A solution turns red litmus into blue. The possible pH value of this solution is:
The bond present in chlorine molecules is:
Useful substance in making water bacteria free is:
The reactions in which new compounds are formed by exchange of ions, are called:
The function of xylem in plants is:
In which of the following plants did Mendel perform his experiments on inheritance?
The sun appears whitish:
On which of the following does the resistance of an electrical conductor not depend?
In which combination the four resistors be connected to have minimum resultant resistance?