Subject :NSO Class : Class 7
Subject :NSO Class : Class 7
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Subject :NSO Class : Class 4
Ans 1: (Master Answer)
Class : Class 1
B
Rohit tried to push a wall but failed to do so. that means he applied some force in the wall, but the wall did not move. So, some energy is spent, but no work is done.
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Subject :NSO Class : Class 4
Ans 1: (Master Answer)
Class : Class 1
A
Shadows move during the day, and their length changes. They are longest in morning and evening. They are shortest at noon. So, Option A is the right answer.
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Subject :NSO Class : Class 9
Fill in the given blanks by choosing an appropriate option.
A sound of single frequency is called a _(i)_ . The sound produced due to a mixture of several frequencies is called a _(ii)_ and is pleasant to listen. Sound propagates through a medium at a finite speed but the speed of sound _(iii)_ as it propagates from solid to gaseous medium. In any medium as we _(iv)_ the temperature, the speed of sound also _(v)_.
| (i) | (ii) | (iii) | (iv) | (v) | |
| A | Note | Tone | Increases | Decrease | Decreases |
| B | Note | Tone | Decreases | Increase | Increases |
| C | Tone | Note | Decreases | Increase | Increases |
| D | Tone | Note | Increases | Increase | Increases |
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 4
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Subject :NSO Class : Class 7
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Subject :NSO Class : Class 4
Pinki made lemonade by dissolving lemon juice and little sugar in water.
Select the option which correctly classifies different substances into solute, solvent end solution.
| Solute | Solvent | Solution | |
| A | Lemon juice | Water and sugar | Lemonade |
| B | Water | Lemon juice and sugar | Lemonade |
| C | Lemonade | Lemon juice | Water and sugar |
| D | Lemon juice and sugar | Water | Lemonade |
Ans 3: (Master Answer)
Class : Class 1
D
Solution is the liquid mixture in which the minor component (the solute) is dissolved in the major component (the solvent). So, when Pinki made lemonade by dissolving lemon juice and little sugar in water, it means lemon juice and sugar are the solutes, Water is the solvent, and lemonade is the solution.
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Subject :NSO Class : Class 7
