Subject :NSO Class : Class 5
Class : Class 5
The given graph shows that amount of CO2 increases from time Q to R The increases in CO2 amount during interval Q R is indicative of activities like deforastation burning of fossil fuels increases in vehicular transport etc.
Class : Class 1
The given graph shows that amount of CO2 increases from time Q to R. The increase in CO2 amount during interval Q â R is indicative of activities like deforestation, burning of fossil fuel, increase in vehicular transport etc.
Subject :NSO Class : Class 6
Observe the given Venn diagram carefully and fill in the blanks by choosing an appropriate option.
1 | 2 | 3 | 4 | |
A | Falling of trees |
Occurrence of rainbow |
Growth of plants |
Tearing paper into pieces |
B | Knitting sweater from wool |
Setting of milk to form curd |
Making rice puddings |
Dissolving sugar in water |
C | Expansion of mercury in thermometer |
Breaking of glass |
Lighting LPG stove |
Boiling an egg |
D | Filling a water bottle |
Melting of ice |
Burning of paper |
Boiling of water |
Ans 2: (Master Answer)
Class : Class 1
Answer: C
1 : Expansion of mercury in thermometer is a physical change which is reversible as mercury returns to its original position (contracts) on cooling.
2 : Breaking of glass is a physical change which is irreversible as broken pieces of glass cannot be joined back.
3 : Lighting LPG stove involves both physical and chemical changes. When LPG comes out of the cylinder it changes from liquid to gaseous state which is a physical change. Then the gas burns in the air which is a chemical change.
4. Boiling of an egg is a chemical change, liquid egg converts to solid egg having different texture and taste which is irreversible as boiled egg cannot be changed into original liquid form.
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Subject :NSO Class : Class 6
Ans 1: (Master Answer)
Class : Class 1
Answer: D
The circuit will not be completed when one of the four bulbs blows off. Hence, all the bulbs P, Q, R and S will not glow
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 5
Ans 2:
Class : Class 5
Ritam Das, It is A as they asked which is the part WHERE work is done, not BECAUSE OF WHICH part is work done
Ans 4:
Class : Class 8
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Ans 5:
Class : Class 6
It should be A as we apply or put force on the effort then only the load can be lifted so as per me the A is the correct answer
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 5