Recently chickengunya cases were reported form various parts of the country. Name the vectors responsible for the same.

Name the various parts of alimentary canal of man.

Name the various parts of skeletal system.

Name one estrogen which forms a part of an oral contraceptive.

In a fruit, name the parts which is protective in function and that which is responsible for producing new plants.

Given below are measurements of some parts of two triangles. Examine whether the two triangles are congruent or not, using RHS congruence rule. In case of congruent triangles, write the result in symbolic form:

Direction. In the follwing questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if asssertion is true, but reason if false, (D) if both assertion and reason are false Assertion : Magnetic Reasonance imaging (MRI) is a useful diagnotic tool for producing images of various parts of human body. Reason : Protons of various tissues of human body play a role in MRI.

Phosphorus forms a variety of oxyacids. In all these, phosphorus is sp^3 hybridised and is tetrahedrally bonded to four neighbouring atoms. These contain P-OH bonds, the hydrogen of which are ionisable giving acidic character to these compounds. These also contain P-H bonds in which hydrogens are notionisable because P and H have nearly same electronegativity. The presence of P-H group in these oxyacids is responsible for their reducing properties. The structures of some oxyacids are given below : Answer the following (1 to 7) questions : The oxyacid of P having tetrabasicity is