A simple barometer was first constructed by

Hydraulic lift is based on

The value of the atmospheric pressure at

sea level is

Water strider insect slides on the water surface easily due to the________of water.

The property of __________ of a liquid surface enables the water droplets to move upward in plants

The pressure of a liquid column __________ with the depth of the column

Atmospheric pressure can be measured by a device called

Upward force offered by liquid is called

________states that the pressure applied

at any point of a liquid at rest, in a closed

system, will be distributed equally through all directions of the liquid

Dissolved gases like sulphur dioxide and nitrogen oxides in rain water causes

Burning of paper is a __________ change.

Limestone contains __________ mainly

In Haber’s process of producing ammonia

__________ is used as a catalyst.

Brine is a concentrated solution of

Which of the following factor induces electrtolysis?

The pigment responsible for browning of apples is __________.

_________ undergoes rusting

Photosynthesis is a chemical reaction that takes place in the presence of __________.

__________ is the basic material to manufacture urea

Electrolysis of brine solution gives __________ gases.

Chemical reactions accompanying evolution

of heat are called

Chemical reactions which involve absorbtion of heat are called_________reaction

A chemical reaction causes

________is a process in which light is used to carry out chemical reactions