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Subject :NSO    Class : Class 7

Pain due to a wasp sting can be reduced by rubbing (i) solution while pain due to a bee sting can be neutralised by applying (ii) on the skin. Substance (iii) is used for making pickles and when it is mixed with (ii), it undergoes a (iv) change to evolve (v) gas.
(i), (ii), (iii), (iv) and (v) are respectively

A Formic acid, sodium carbonate, vinegar, chemical and CO2
B Vinegar, calamine solution, vinegar, chemical and CO2
C Soap, vinegar, sodium bicarbonate, physical and H2
D None of these.


Ans 1:

Class : Class 8

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 6

Read the given statements and select the correct option.
Statement 1 : The displacement of a body may be zero, though distance can be finite.
Statement 2 : If a body moves such that finally it arrives at initial point, then displacement is zero while distance is finite.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true and statement 2 is false.
D Statement 1 is false and statement 2 is true.


Can someone please explain it ??

Ans 1:

Class : Class 6

Ans 2:

Class : Class 6

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
A

Ans 2:

Class : Class 3
a

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
A as Frog,Lizard,Duck,Crow and parrot lay eggs:- -Lizard is a reptile;it lays eggs -Duck,Crow and Parrot lay eggs;They are birds -Frog lays eggs;it is an amphibian

Ans 2:

Class : Class 5
Option a is correct

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Subject :NSO    Class : Class 10

Fill in the blanks with most appropriate option.
Bio-gas is an excellent fuel as it contains up to 75% __(i)__ . It burns without smoke, leaves no residue like ash in wood. Its heating capacity is __(ii)__ . The slurry left behind is removed periodically and used as excellent manure, rich in __(iii)__and __(iv)__.

(i) (ii) (iii) (iv)
A Methane High Nitrogen Phosphorous
B Nitrogen Low Methane Phosphorous
C Methane Low Nitrogen Oxygen
D Oxygen High Nitrogen Phosphorous


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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 4
C

Ans 2:

Class : Class 3
C

Ans 3:

Class : Class 3
a

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