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CBSE Notes 2011-2012 » IX-Science

Matter in our Surroundings

A few substances are arranged in the increasing order of'forces of attraction' between their particl...

Multiple choice question

A few substances are arranged in the increasing order of'forces of attraction' between their particles.
Which one of the following represents a correct arrangement ?

On converting 25

Multiple choice question

On converting 25

Choose the correct statement of the following

Multiple choice question

Choose the correct statement of the following

The boiling points of diethyl ether, acetone and n-butyl alcohol are 35

Multiple choice question

The boiling points of diethyl ether, acetone and n-butyl alcohol are 35

Which condition out of the following will increase the evaporation of water ?

Multiple choice question

Which condition out of the following will increase the evaporation of water ?

In which of the following conditions, the distance between the molecules of hydrogen gas would incre...

Multiple choice question

In which of the following conditions, the distance between the molecules of hydrogen gas would increase ?
(i) Increasing pressure on hydrogen contained in a closed container
(ii) Some hydrogen gas leaking out of the container
(iii) Increasing the volume of the container of hydrogen gas
(iv) Adding more hydrogen gas to the container without increasing the volume of the-container

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