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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
All of these

Ans 2:

Class : Class 3
all of these option(D)

Ans 3:

Class : Class 5
A

Ans 4:

Class : Class 3
D

Ans 5:

Class : Class 5
D

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Subject :NSO    Class : Class 7

Read the given data and select the correct option for the following questions.
Raman carried out an experiment to find out how fast water can pass through four different types of soil. He put each type of soil in four pots with equal sized holes at the base and placed separate dishes at their bottom to collect water. He poured water in them one by one, and used a stopwatch to record the time taken for water to reach the level he had marked same in each dish. His recording is given in the table as shown below.


What factors should Raman keep the same to ensure a fair test?
(i) The amount of soil
(ii) The size of the pot
(iii) The shape of the dish
(iv) The amount of water

A (iii) and (iv) only
B (i) and (ii) only
C (ii), (iii) and (iv) only
D (i), (ii), (iii) and (iv)


How can it be a fair test if the amount of water varies

Ans 1:

Class : Class 6

Ans 2:

Class : Class 8
shape of dish also should be included. Amount of water poured doesnt matter as long as you are collecting equal volume in all dishes. Hence similar dishes is important.

Ans 3:

Class : Class 7

Ans 4:

Class : Class 8
The amount of water also matters right

Ans 5:

Class : Class 7
i think amount of water also nedd

Ans 6:

Class : Class 5

Ans 7:

Class : Class 7
d is correct answer

Ans 8:

Class : Class 7
I feel that it is D

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Subject :NSO    Class : Class 6

A potter shapes pots out of clay (Process 1). He then bakes the pots in an oven (Process 2). Which of the following statements is correct?

A Process 1 is a reversible, physical change while process 2 is an irreversible, physical change.
B Process 1 is an irreversible, physical change while process 2 is an irreversible, chemical change.
C Process 1 is a reversible, physical change while process 2 is an irreversible, chemical change.
D None of these.


Is it A or C?

Ans 1:

Class : Class 7
c is the correct answer

Ans 2:

Class : Class 6
a is the correct answer because chemical composition dose not change

Ans 3:

Class : Class 6
C because we can get clay back from a wet pot by smashing it,but once it heats up, it dries the clay and makes it stone hard.

Ans 4:

Class : Class 6
The answer is A.

Ans 5:

Class : Class 6
on heating, the clay pot doesn't turn into stone,right?it doesn't change composition once heated , it is still clay ! answer is "A"

Ans 6:

Class : Class 6

Ans 7:

Class : Class 6
A is the correct answer

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Subject :NSO    Class : Class 7

A student took an iron rod and a wooden rod and wrapped each of them in a piece of paper. These were then heated as shown. It was found that the paper around the iron rod does not burn whereas the one around the wooden rod catches fire. It is because


A Candle, in case of iron rod, is nearer to the paper
B Wood being a bad conductor of heat, takes away all the heat
C Iron being a good conductor of heat, conducts away the heat given to the paper
D Paper, in first case, is thicker.


could someone please explain the answer

Ans 1:

Class : Class 7
answer is option c

Ans 2:

Class : Class 9
ans is option C

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
Not kerwa its kewra. It is an extract that is distilled from the flower of the Pandanus plant. Kewra water is very similar to rosewater. It is used to flavour South Asian cuisine.

Ans 2:

Class : Class 5
jk kj;

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
it will be maximum near the ground

Ans 2:

Class : Class 6
As it goes up,kinetic energy decreases due to gravity while potential energy increases with height. As it comes down, kinetic energy increases due to gravity while potential energy decreases.

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
it will be maximum near the ground

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Subject :NSO    Class : Class 7

Saurabh burned two different fibres X and Y in order to identify them. X smelt like burning paper while Y smelt like burning hair. Which of the following options correctly identifies the two fibres?


Ans 1:

Class : Class 7

Ans 2: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 3:

Class : Class 8

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 4

Ans 2:

Class : Class 7

Ans 3:

Class : Class 6
i mean except Satwik

Ans 4:

Class : Class 6
dddddddddddddddddddddddddddddddddddddddddd!!!!!!!!!!!!!

Ans 5:

Class : Class 7
D

Ans 6:

Class : Class 6
ans is d

Ans 7:

Class : Class 7
ans is d

Ans 8:

Class : Class 6
It is true that air is a perfectly transparent object. It neither absorbs nor reflects light. It transmits whole of light. So, all the options are correct and answer is D.

Ans 9:

Class : Class 7

Ans 10:

Class : Class 6
ans is d

Ans 11:

Class : Class 7
Answer is d

Ans 12:

Class : Class 4
ANS IS D

Ans 13:

Class : Class 6
ANS IS D

Ans 14:

Class : Class 6
D is the ans as air is matter and is very transparent.

Ans 15:

Class : Class 7
d is the answer but the trainer is showing b as answer air reflects light that is why the sky is blue

Ans 16:

Class : Class 6
ans is D

Ans 17:

Class : Class 6
ans is d because it is transparent which allows light to pass, it doesn't observe light but transmits all light

Ans 18:

Class : Class 7
Option D. All of the above.

Ans 19:

Class : Class 6
ans is d sof !!!!!!!!!!!!! ans is d

Ans 20:

Class : Class 7
Option D. All of the above.

Ans 21:

Class : Class 6
answer is B as given in the answers. there is a solution too

Ans 22:

Class : Class 7
And is b

Ans 23:

Class : Class 8
Ans is D as air is all of the above

Ans 24:

Class : Class 6
Answer is D as air it neither absorbs or reflects light,its almost transparent,it transmits the whole of light.

Ans 25:

Class : Class 6

Ans 26:

Class : Class 4
Answer is D

Ans 27:

Class : Class 6
ANS IS D

Ans 28:

Class : Class 6
I agree with everyone is Satwik because air trasparent it neither reflects nor absorbs light and trasmits whole of light So ans is D

Ans 29:

Class : Class 7
ans is d

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 10
The common error is to think that pressure at 0.4h above the surface of the reservoir of mercury is 0.4 times the atmospheric pressure. The pressure at p is caused by the weight of mercury above point P. Thus preesure at P is equal to : 0.6x 100000 = 60000 Pa

Ans 2:

Class : Class 7
answer is b

Ans 3:

Class : Class 7
everybody just copy and paste it, can anyone explain in an easier way

Ans 4: (Master Answer)

Class : Class 1
The correct answer is B.

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X Y
(A) Wool Silk
(B) Cotton Rayon
(C) Cotton Silk
(D) Silk Wool