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Subject :NSO    Class : Class 6

The given figure shows different arrangements of particles of an unknown substance undergoing changes I, II, III and IV.

Fill in the blanks by choosing an appropriate option. The change(s) (p) involve(s) absorption of heat while change(s) (q) involve(s) evolution of heat. In all these changes, (r) of the substance remains constant.

(p) (q) (r)
A I, II III, IV Volume
B III I, II, IV Mass
C I, II, IV III Mass
D I, II, IV III Energy


c

Ans 1:

Class : Class 6
Correct answer is C . Because P involved absorbtion of heat 1 liquid to gas ,2solid to liquid ,4solid to gas .Q involved evolution of heat (heat is given)i.e exothermic.gas to liquid.R involved substance remains constant that is Mass .mass remains constant in every medium .i.eas the density of gas decrease so the mass also decrease but it will have same mass everywhere.

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1

A

Z is lungs, Y is heart and X are all body parts.


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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Answer B

Ans 2:

Class : Class 4

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1

B

Foods that give us energy to work and play are carbohydrates, like rice. Foods that make our bones and muscles strong are proteins, like cottage cheese. Foods that protect us from falling ill are protective foods (vitamins and minerals), like apple.


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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
Answer is option c

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
Answer is A.because it is nitrogen and used in fertilizer.In nitrogen fixation the nitrogen gas is used to produce protien.

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