Physics GK 12 - Density

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1).
Which of the following represents the Density of a material?
2).
Which of the following is the S.I. unit of density?
3).
What is Specific Gravity of a liquid?
4).
What is the unit of Specific gravity?
5).
What is the density of water at 4°?
6).
What is the density of whole blood at STP?
7).
Which of the following instruments is used to measure the relative density of a liquid?
8).
Which of these instruments is used for testing the purity of milk?
9).
Which of the following is correct about the density of sea water?
10).
What is the density of air at room temperature?
1. Which of the following represents the Density of a material?
[A] Mass/weight
[B] Mass/Length
[C] Mass/Volume
[D] Mass/Area
2. Which of the following is the S.I. unit of density?
[A] m-2
[B] m-3
[C] kg m-2
[D] kg m-3
3. What is Specific Gravity of a liquid?
[A] ratio of the density of a liquid to the density of water
[B] product of the density of a substance to the density of water
[C] ratio of the density of water to the density of a liquid
[D] ratio of density of the liquid to the mass of the equal density of water
4. What is the unit of Specific gravity?
[A] kg m-3
[B] kg m-2
[C] kg m-1
[D] No units
5. What is the density of water at 4°?
[A] 1.0
[B] 1.0 × 102 kg m–3
[C] 1.0 × 103 kg m–3
[D] 10 kg m–3
6. What is the density of whole blood at STP?
[A] 3.57 × 103 kg m–3
[B] 1.06 × 103 kg m–3
[C] 5.55 × 103 kg m–3
[D] 2
7. Which of the following instruments is used to measure the relative density of a liquid?
[A] Hydrometer
[B] Hygrometer
[C] Lactometer
[D] Gravitimeter
8. Which of these instruments is used for testing the purity of milk?
[A] Hydrometer
[B] Lactometer
[C] Galvanometer
[D] Ammeter
9. Which of the following is correct about the density of sea water?
[A] it is more than fresh water
[B] it is less than fresh water
[C] it is equal to the density of fresh water
[D] None of the above
10. What is the density of air at room temperature?
[A] 1.41
[B] 1.75
[C] 1.29
[D] 1.9
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