Crab and Snail both have a protective covering. Is it made up of the same material?

Assertion : Two wires A and B have the same cross-sectional area and are made of the same material but the length of wire A is twice that of B. For a given load, the strain in wire A is twice that in B. Reason : For a given load, the extension in a wire is prportional to its length.

Sponge and Sea star show calcareous protective material. Do they belong to the same Phyla?

A metallic ball and highly retched spring are made of the same material and have the same mass. They are heated so that they melt the latent heat required

Sponge and sea star show calcareous protective material. Do they belong to the same Phylum?

A sphere, a cube and a thin circular pate are heated to the same temperature. If they are made of same material and have equal masses, determine which of these three object cools the fastest and which one cools the slowest?

A sphere, a cube and a thin circular plate all made of the same material and having the same mass are initially heated to a temperature of 300 ^@C . Which one of these cools faster?

If the resistance of wire A is three times the resistance of wire B and the two wires have the same length, compare their cross sectional areas. The two wires are made of the same material.

P and Q are two wires of same length and different cross sectional areas and made of same material. Name the property which is same for both the wires.

Questions based on Paragraph : Seemas and shobha's mother asked both of them to take out 3 packs of 0.5 L of milk ( all at same temperature ) kept in refigerator and boil it . Seema took 1 l of milk in vessel A and shobha took rest of the milk in vessel B of same size as that of A . both the vessels are made up of same material and kept on the flame of equal intensity : After boiling , what can you say about the temperatures and heat content of the milk in both vessels ? why ?

Questions based on Paragraph : Seemas and shobha's mother asked both of them to take out 3 packs of 0.5 L of milk ( all at same temperature ) kept in refigerator and boil it . Seema took 1 l of milk in vessel A and shobha took rest of the milk in vessel B of same size as that of A . both the vessels are made up of same material and kept on the flame of equal intensity : Who exactly happens when the milk is heated ?