NSO Level 1- Science Olympiad (SOF) Class 7: Questions 564 - 566 of 597
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Question number: 564
» Physical and Chemical Changes
Appeared in Year: 2012
Question
The table below shows the colours and solubilities of four solids in water.
Figure Shows Residue and Filtrate
Solid | Colour | Solubility in water |
W | Blue | Insoluble |
X | Blue | Soluble |
Y | White | Insoluble |
Z | White | Soluble |
A mixture containing two solids is added to excess water, stirred and filtered. A blue filtrate and a white residue are obtained. Which two solids are present in the mixture?
Choices
| Choice (4) | Response | |
|---|---|---|
a. | X and Z | |
b. | W and X | |
c. | X and Y | |
d. | W and Y | |
Question number: 565
» Heat
Appeared in Year: 2012
Question
Some blobs of wax are placed on a silver ring as shown in the diagram. If the ring is heated at X, then choose the correct option regarding the melting of wax because of heating.
Diagram Shows Bolbs of Wax Are Placed on a Silver Ring
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Melting of blobs occurs in the order R, Q, S and P. | |
b. | Only R blob melts. | |
c. | Blobs R, S and Q melt together. | |
d. | P, Q, R and S blobs melt together. | |
Question number: 566
Appeared in Year: 2012
Question
Which of the following encloses the portion of your body below the stomach?
Choices
| Choice (4) | Response | |
|---|---|---|
a. |  Encloses the Portion of Your Body below the Stomach – Choice A | |
b. |  Encloses the Portion of Your Body below the Stomach – Choice B | |
c. |  Encloses the Portion of Your Body below the Stomach – Choice C | |
d. |  Encloses the Portion of Your Body below the Stomach – Choice D | |