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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
I just did silly mistake

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Subject :NSO    Class : Class 6

Refer to the given dichotomous key and select the correct option.
I. a. Its edible part grows above ground. - Go to II
b. Its edible part grows below ground. - Go to III
II. a. It has reticulate venation in leaves - P
b. It has parallel venation in leaves - Q
III. a. It has tap root system - R
b. It has fibrous root system - S

A P could be coriander whereas R could be radish.
B Q could be potato whereas S could be onion.
C Q could be maize whereas R could be wheat.
D P could be mustard whereas S could be pea.


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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
D

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Subject :NSO    Class : Class 5

Rini was asked to write some involuntary actions. She has written some voluntary actions also as shown in the list.

(i) Chewing food
(ii) Sitting upright on a table
(iii) Digestion of food
(iv) Beating of heart
(v) Singing a song
(vi) Dancing
(vii) Breathing
(viii) Writing a letter
Select the option that contains only involuntary actions.

A(i), (iii), (vii) and (viii) only
B(ii), (vi) and (vii) only
C(iii), (iv) and (vii) only
D(ii), (v), (vi) and (vii) only


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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 10

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
ans c

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Subject :NSO    Class : Class 7

Fill in the blanks by choosing the correct option.Turmeric is one of the most commonly used spices in our kitchen. It leaves a yellow stain on white clothes. On rubbing with soap which is p in nature, the yellow stain changes to q colour. Now, if we pour some r containing s over this stain, it again becomes yellow in colour due to t .

P Q R S T
A Alkaline Red Lemon juice Acetic acid Formation of water
B Acidic Green Lime Lime Sodium hydroxide Neutralisawatertion reaction
C Neutral Dark pink Lime water Potassium hydroxide Formation of water
D Alkaline Red Lemon juice Citric acid Neutralisation reaction


Ans 1:

Class : Class 7
answer is D ) this is because soap is alkaline in nature so p is alkaline then we can cancel out b or c then basic or alkaline substances turn red when rubbed on turmeric paper. hen they have mentioned in the answer that it has to be lemon juice and it contains citric acid or vitamin c the reaction turns it back to yellow that reaction is known as neutralization reaction

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Subject :NSO    Class : Class 8

Study the given dichotomous key and select the correct option.
I. a. It is a unicellular organism - go to II
b. It is multicellular organism - go to III
II. a. It contains chlorophyll - P
b. It does not contain chlorophyll - Q
III. a. It is used in production of antibiotics - R
b. It decomposes the organic waste and dead plants and animals - S

AP could be Spirogyra whereas Q could be Rhizopus.
BR could be Penicillium whereas S could be diatoms.
CP could be Chlamydomonas whereas R could be Streptomyces.
DNone of these


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Subject :NSO    Class : Class 8

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