The word “biology” has been derived from two…………..words.

Which one of the following metal burns with a brick red flame?

Sodium is extremely reactive metal, but it does not react with:

Which one of the following is the lightest metal?

Pure alkali metals can be cut simply by knife but iron cannot because of alkali metals have:

Which of the following is less malleable?

Metals lose their electrons easily because:

Which one of the following is brittle?

Which one of the following non-metals is lustrous?

Non-metals are generally soft, but which one of the following is extremely hard?

Which one of the following will not react with dilute HC1?

Density of a gas increases, when its

The vapor pressure of a liquid increases with the:

Pressure of a given mass of gas is directly proportional to kelvin’s temperature when volume’s remains constant. This law is given by:

The state of matter that shows the uniformity of behavior

The escape of a gas molecule through a pinhole is called:

The temperature at which the vapor pressure of a liquid becomes equal to the atmospheric pressure is called: