Convert: 104°F into Celsius scale.

Complete the table:

Power of 10	Prefix	Symbol
1012	___(i)___	T
___(ii)___	Kilo	K
1015	Peta	___(iii)__
109	___(iv)__	___(v)__

Define the terms rest and motion.

What is speed?

Name the spherical mirror(s) that has/have 
i) Virtual principal focus
ii) Real principal focus

If an object is placed at the focus of a concave mirror, where is the image formed?

On what factors does the focal length of a spherical mirror depend?

What is meant by desalination of sea water?

The most appropriate labelling of X and Y in a filtration set up are

	X	Y
(a)	precipitate	solvent
(b)	solvent	solute
(c)	residue	filtrate
(d)	filtrate	residue

1. Let us take two glass tumblers and fill one with cold water and the other with hot water.
2. Now add a drop of red ink into each of the glasses but do not stir. Observe.
3. In which glass does water turn red faster?
4. Does the rate of mixing change with temperature? What do you conclude?

Write the electronic configuration of K and Cl

Copy the following and write the names of the laws and their simple definitions in the space provided.

What is combination reaction ?

An atom X has 8 protons, 8 neutrons and 8 electrons. Identify the atomic number and Mass number of 'X'.

Give an example for a plant whose leaf shows a mesmerizing movement.

Give the technical terms for the following:
a) Growth dependent movement in plants.
b) Growth independent movement in plants.

What is a nematocyst?

Why are frogs said to be amphibians?

Which is the infective form of Ascaris?

What does "Acrania" refers to?

Give an account of phylum Arthropoda.

What factors are required for the absorption of Vitamin D from the food by the body?

Name the adulterant of chilly powder.

Name any three methods of food preservation.

Write a note on ENIAC.