AIEEE Questions

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Te Sun.

From the time rising it goes around the house upto sunset, but never touches the house.

Milk is not a pure substance since it has so many constituents that can be separated physically.

Compounds are pure substances formed from elements unlike mixtures.

The place which is designated as 0 degrees longitude is Greenwich, England.

Covalent bonds hold atoms together because the attraction between the positively charged nuclei and the negatively charged shared electrons is greater than the repulsions between the nuclei themselves.

A galvanic cell is also known as voltaic cell provides electrical energy from the chemical energy.

Common properties of Minerals are :

1. All minerals are formed in a natural process.

2. Minerals are inorganic

3. Minerals are crystalline solids.

4. Every mineral is an element or compound with a definite chemical composition.

The freezing point of water and melting point is 0 °C or 32 °F. The temperature may be lower if supercooling occurs.