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Physical Properties of Metals

In the table ...

Question

In the table properties of some specimens are given.
Specimen Melting Point Shining Malleability Electric Conductivity
P High more No insulator
Q High less No conductor
R High more Yes conductor
S Low less Yes low conductor
Which specimen is precisely a metal?

A

R

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B

Q

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C

P

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D

S

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Solution

The correct option is A R
The specimen R is precisely a metal.
A metal has high melting point, malleability and ductility, shinning (metallic lusture) and good electrical and thermal conductivity.

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Q. In the table, the properties of some specimens are given.

Specimen	Melting Point	Shining	Malleability	Electric conductivity
$P$	High	more	No	insulator
$Q$	High	less	No	conductor
$R$	High	more	Yes	conductor
$S$	Low	less	Yes	low conductor

Which of the specimen is a metal?

Q. Sarthak made slides of two specimens A and B. After carefully examining the nucleus, he observed:

	Specimen A	Specimen B
Well-defined nucleus	Present	Absent
Nuclear membrane	Present	Absent

Based on the information given in the table, identify the specimens A and B.

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Specimen	Number of nails picked up	Number of nails left on
X	35	4
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Three specimens of magnetic material were tested using the apparatus shown in the diagram.
When the switch is closed, the specimen picks up some of the iron nails but when the switch is opened, many or most of the nails fall off. The number of nails picked up and left on were found for three specimens. The table shows the results.

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