Both the assertion and reason are true but reason are true but reason is not the correct explanation of assertion.
We know that, mercury freezes at -39 C, while alcohol freezes at a point far below - 100 C. So, alcohol is used to measure lower temperatures. Similarly, mercury boils at 357 C, while alcohol boils at 78 C. So, mercury is used to measure high temperature.
The team given in option (b) is not possible since Shalini and Kapil have to be selected together.
Kapil and Rawat cannot be members of the same team since Kapil and Shalini are to be always selected together, while Rawat and Shalini can never be selected in the same team.
If Rawat is selected, Shalini cannot be selected. Also, Shalini and Kapil will be selected together. Therefore, if Shalini is not selected, Kapil will also not be selected.
It is mentioned that exactly one from Prateek or Tarun will be selected. Taking all the conditions into consideration, Rawat cannot be a member of a team having six members.
If Shalini is selected, Rawat is definitely not selected. Also, exactly one from Prateek or Tarun is selected, that is, the team can have a maximum of six members.
In graphite, each carbon atoms is linked to three other carbon atoms, while one electron in the carbon atom is delocalised. So, graphite has free electrons and it is also used as a lubricant but reason does not explains assertion.
We know that, common salt contains magnesium chloride. Therefore, it absorbs moisture from the air.
Assertion is correct but reason is false.
We prefer coloured/dark clothes in winter as they absorb heat but given reason is true for white clothes.
Earthworms are good for agriculture as they make the soil fertile. Therefore, assertion is false but the reason is true.
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