The specific gravity of water at standard atmospheric conditions is:

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SSC JE ME Previous Paper 12 (Held on:22nd March 2021 Evening)
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  1. greater than 1
  2. less than 0
  3. 1
  4.  0

Answer (Detailed Solution Below)

Option 3 : 1
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Detailed Solution

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Concept:

  • Specific gravity is also termed as relative density.
  • The relative density/specific gravity of a substance is defined as the ratio of the density, mass or weight of the substance to the density, mass or weight of water at 4°C (Standard atmospheric conditions)
  • Specific gravity is the ratio of the specific weight of the liquid to the specific weight of a standard fluid.
  • In the case of liquids standard fluid is taken as water with specific gravity 1.


Additional Information

The specific gravity of the same other materials is

Material

Specific gravity 

Balsa wood

0.2

Oakwood

0.75

Ethanol

0.78

Olive oil

0.91

Water

1

Ironwood

1.5

Graphite

1.9–2.3

Table salt

2.17

Aluminum

2.7

Cement

3.15

Iron

7.87

         Brass            8.4

Copper

8.96

Lead

11.35

Mercury

13.56

Depleted uranium

19.1

Gold

19.3

Osmium

22.59

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