State Newton’s laws of motion?

An object of height 3 cm is placed at 10 cm from a concave lens of focal length 15 cm. Find the size of the image.

Explain the experiment of measuring the real and apparent expansion of a liquid with a neat diagram.

a) What is meant by electric current?
b) Name and define its unit.
c) Which instrument is used to measure the electric current? How should it be connected in a circuit?

What is mean by reflection of sound? Explain:
a) reflection at the boundary of a rarer medium
b) reflection at the boundary of a denser medium
c) Reflection at curved surfaces

Compare the properties of alpha, beta and gamma radiations.

Name the acid that renders aluminium passive. Why?

'A' is a blue coloured crystaline salt. On heating it loses blue colour and to give 'B'. When water is added, 'B' gives back to 'A'. Identify A and B, write the equation.

The molecular formula of an alcohol is C₄H₁₀O. The locant number of its –OH group is 2.
(i) Draw its structural formula.
(ii) Give its IUPAC name.
(iii) Is it saturated or unsaturated?

Describe and name three stages of cellular respiration that aerobic organisms use to obtain energy from glucose.

How does locomotion take place in leech?

Why are leucocytes classified as granulocytes and agranulocytes? Name each cell and mention its functions.

Illustrate the structure and functions of brain.

Write the physiological effects of gibberellins.

What are the phases of menstrual cycle? Indicate the changes in the ovary and uterus.