Subject :NSO Class : Class 4
Subject :NSO Class : Class 4
Rainav prepared two mixtures P and Q as shown here.
Identify the methods that can be used to separate the components of mixtures P and Q.
| P | Q | |
|---|---|---|
| A | Filtration | Sedimentation and decantation |
| B | Distillation | Magnetic separation |
| C | Filtration | Distillation |
| D | Evaporation and condensation |
Filtration |
ans is d
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Subject :NSO Class : Class 4
Ans 3:
Class : Class 7
the answer is B as the chemical energy is first being used so only B option has the first letter as chemical energy.
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 6
Some commonly occurring changes around
us are classified in the given table.
| S. No. |
Change | Reversible change |
Physical change |
|---|---|---|---|
| I. | Melting of ice cream |
✓ | ✓ |
| II. | Burning of crackers |
✓ | ✗ |
| III. | Stitching a shirt from a fabric |
✓ | ✓ |
| IV. | Dissolving baking soda in water |
✓ | ✓ |
| V. | Baking of cake | ✗ | ✗ |
| VI. | Curdling of milk | ✗ | ✓ |
Which of the above changes are classified incorrectly?
AI, II, III and V only
BII, IV and VI only
CI, III and V only
DII, III, IV and VI only
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Subject :NSO Class : Class 6
A glass ball initially rolling at a constant speed, moves up a smooth slope as shown in the figure. Which of the following options is true about its energy as it is rolling up the slope?
| Kinetic energy |
Potential energy |
|
|---|---|---|
| A | Remains same | Decreases |
| B | Increases | Remains same |
| C | Decreases | Increases |
| D | Decreases | Decreases |
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Subject :NSO Class : Class 6
Ans 1:
Class : Class 7
cccccccccccccccccccccccccccccccccccccccccCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 6
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Subject :NSO Class : Class 6
