Q2.Electric-field magnitude E at points inside and outside a positively charged spherical conductor having charge Q and a radius R are
Answer : Option BExplaination / Solution: Electric field inside a spherical conductor is zero since all the charge resides on the surface of the conductor and there is no charge in the interior of the conductor. For all external points, the conductor behaves as though its entire charge is concentrated at its center.E=Q4πε0R2
Q5.Oozing of water drops from injured leaf edges is
Answer : Option AExplaination / Solution:
Water drops comes out from theinjured leaf edges of leaves. This oozing of water drop from injured leaf edges is called leaf bleeding.
Q8.The fibre that can't be made to contract merely by thinking about it, is the
Answer : Option BExplaination / Solution:
Smooth muscles are ‘involuntary’ muscles as they can't be directly controlled. We usually are not able to make it contract merely by thinking about it as we can do with skeletal muscles. Involuntary muscles are under control of medulla oblongata and part of cerebrum. Smooth muscles are spindle shaped or fusiform, uninucleated and unstraited fibres.The wall of internal organs such as the blood vessels, stomach and intestine contains this type of muscle tissue.
Q9.Which of the following type of classification based on a few morphological characters
Answer : Option AExplaination / Solution:
Artificial classification is based on a few morphological characters of organisms like flower shape, stem type and types of seeds.
Answer : Option DExplaination / Solution:
The Monopolistic and Restrictive Trade Practices (MRTP) act, which was enacted in 1969 with the aim of preventing the growth of monopolies and prohibit unfair trade practices, was removed under the NEP1991.
Total Question/Mark :
Scored Mark :
Mark for Correct Answer : 1
Mark for Wrong Answer : -0.5
Mark for Left Answer : 0