66.Given below are two statements, labelled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ?Assertion (A) : Tadpole larva is carnivorous.Reason (R) : Tadpole larva feeds on plant material.

67.Given below are two statements, labelled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ?Assertion (A) : Fishes survive in water under ice as Arctic.Reason (R) : Fishes in the Arctic region receive unique type of proteins in their body.

68.Given below are two statements, labelled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ?Assertion (A) : The valency of carbon in carbondioxide is four.Reason (R) : Carbon contains six unpaired electrons in its outermost orbit.

69.Given below are two statements, labeled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ? 1. Assertion (A) : The edges of shadows caused by objects when light falls on them are sharp. 2. Reason(R) : Diffraction of light at an edge produces a redistribution of intensity at the edge of the shadow.

70.Given below are two statements, labeled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ? 1. Assertion (A) : Radio does not work in a moving train unless aerial is put outside the window. 2. Reason (R) : Ttain compartment acts as a hollow cylinder and chrage is centered which does not allow a radio to work.