If a healthy freshwater fish is placed in salt water, what will be the expected consequence?
The fish becomes dehydrated and dies
The fish becomes bloated and dies
The fish suffers from fungal or bacterial disease and dies
The fish suffers from fungal or bacterial disease and dies
A.
The fish becomes dehydrated and dies
Which of the following pairing is incorrect?
Hygrometer - Water Vapour content of the atmosphere
Lactometer - Specific gravity of liquids
Anemometer - Speed of the wind
Anemometer - Speed of the wind
The instrument used for measuring air pressure is called
Anemometer
Barometer
Hygrometer
Hygrometer
When iron rusts, its weight ........
decreases
increases
remains the same
remains the same
An emulsion is a colloidal solution of
Liquid in liquid
Solid in liquid
Gas in solid
Gas in solid
............ is a byproduct of sewage treatment and can be decomposed to produce bio-gas.
Sewage
Sludge
Sewer
Sewer