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Answers
1)At room temperature Mercury is at Liquid state.
Explanation:-Mercury is the only metal which is liquid at room temperature. Mercury has a melting point of -38.9°C, a boiling point of 356.7°C.
2)Digital thermometers do not use Mercury .
Explanation:-Mercury was used in the non-digital thermometers but in the digital thermometers as they don't always give exact temperature .
3)Ammeter is used to measure the electric current .
Explanation:-In ammeter the electric current is measured in ampere which is the SI unit of electric current.
4)Copper :Conductor :Wood : Insulator
Explanation:-In copper the electrons flow through it but in the case of wood a very little or no electrons pass through it these kind of particles are called as insulators.
5)Salt is obtained from sea water from the process of Evaporation.
Explanation:-In the sea water the salt is dissolved to get the salt from water the water needs to be evaporated to obtain salt.
6)Forest fire : Chemical change.
Explanation:-Chemical changes are the changes where the substance change its physical properties. In case of forest fire ash is formed .
7)Pluripotent cells have the ability to multiply and develop into different types of cells.
Explanation:-Pluripotent means that they can turn into more than one type of cell. This can be done by stem cells
8)Cell was is made up of cellulose.
Explanation:-Cellulose fibers are long, linear polymers of hundreds of glucose molecules. This provides a rigid support to a plant cell.
9)Scientific name of human beings is Homo sapiens.
Explanation:-Homo means humans and sapiens mean beings it was a ancient and scientific name of the Humans.
10)Paired and jointed legs are seen in Phylum Arthropoda.
Explanation:-An arthropod is an animal with no internal spine or a body made of joint segments.
Answer:
11) liquid state
13)ampere
14)insulator
15) Evaporation
18) cellulose fibers
19)homo sapiens
Explanation:
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