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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
I think answer is (C) as flowers changes into fruit and fruit changes into seed.

Ans 2:

Class : Class 6
but seeds can reproduce through stem , leaves , and root too , can't they ???

Ans 3:

Class : Class 4
i pressed option c but its incorrect

Ans 4:

Class : Class 5

Ans 5:

Class : Class 5
Think the correct ans'rs C Cause a flower changes into a fruit in the fruit then bears seads which give rise to new plants on being down in soil. That's what I think don't know if it is right!!!

Ans 6:

Class : Class 5
Stem is also correct for some plants like mint ,

Ans 7:

Class : Class 5
Flower attract the insects for pollination,so the answer is C

Ans 8:

Class : Class 5
WE HAVE READ THAT THEY CAN GROW WITHOUT FLOWERSIF THEY HAVE NOT FLOWERS THEY GROW IN A DIFFERENT MANNERVERY STUPID OF SOFSO MANY ERRORSWHAT EVER CORRECT OPTION IS D

Ans 9:

Class : Class 6
It is not c because new plants can rise by vegetative reproduction which are not by seeds.It is by roots, stem or leaves. what, in case of byrophyllum plant.

Ans 10:

Class : Class 4
I think it is seed only because if the other parts will no be there than how the previous plant will grow

Ans 11:

Class : Class 6
the answer is d as many plants don't have flowers but still reproduce. Without the leaves, the plants can't make food.

Ans 12: (Master Answer)

Class : Class 1

The correct answer is C

Flower changes into fruits and fruit bears seeds. Seeds give rise to new plants when sown into soil.


Ans 13:

Class : Class 7
but in some plants ther is no flower then also they can reproduce in a different manner

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Subject :NSO    Class : Class 6

Four rods of equal length and thickness but of different materials are coated with wax in the same manner. They are fixed to a trough containing hot water. The given diagram illustrates what happens to the wax on each rod after five minutes.

What can you conclude from the given diagram?
(i) The aluminium rod conducts heat better than the brass rod.
(ii) The aluminium rod conducts heat better than the copper rod.
(iii) The glass rod conducts heat better than the copper rod.
(iv) The wax on the copper rod melts faster than the wax on the brass rod.

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


Ans 1:

Class : Class 6
it cannot be as you have said because the wax is dripping from the glass rod whereas on the copper rod, it is as it was first placed. And they will not give us a diagram if they are going to ask something not related to it.So, the answer must be B and not A.

Ans 2:

Class : Class 6
The answer is 'a' because the rods are fully coated with wax, those rods which have less wax are good conductors because the wax melted and fell from it.

Ans 3:

Class : Class 6
Sorry for giving the wrong information. At the beginning even I thought the answer was B.If you click the solution button, it says that since the copper rod has the least amount of wax on it, it is the better conductor as all the other wax on it has melted and fell down. That is why the answer is A not B

Ans 4:

Class : Class 3
the wax has been applied all over the rod. copper has the least amount of wax on it. So it is the best conductor of heat whereas the glass rod has the most amount of wax thus it is the weakest conductor of heat.Thus,the option "A" is the correct answer

Ans 5:

Class : Class 6
b is the answer

Ans 6:

Class : Class 6
I too agree with you .It's B and not A

Ans 7:

Class : Class 8
ACCORDING TO ME THE CORRECT ANSWER IS B , FIRST WE HAVE TO UNDERSTAND THE PICTURE AND THEN ANSWER

Ans 8:

Class : Class 7
It must be 'B' not 'A'

Ans 9:

Class : Class 6

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Subject :NSO    Class : Class 1

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Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Class : Class 1

The correct answer is D

In transverse wave, vibration of a wave is perpendicular to its direction of propagation of wave.


Ans 2:

Class : Class 8

Ans 3:

Class : Class 9
The correct answer is D. In a transverse wave the direction of the movement of the particle is perpendicular to direction of motion of the wave. So, over here, when we move the end Q from left and right , it will produce a transverse wave,. You can check it by observing it from the top.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
yeah the answer is a

Ans 2:

Class : Class 7

Ans 3:

Class : Class 7
Answer is A

Ans 4:

Class : Class 8

Ans 5: (Master Answer)

Class : Class 1

The correct answer is A.

Sugar syrup is neutral and hence the colour of blue litmus and red litmus remains unchanged. Tamarind juice is acidic, so blue litmus turns red but red litmus does not change its colour. Lime water and soap solution are basic in nature which turn red litmus blue whereas blue litmus remains unchanged.


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Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Class : Class 1

Fish Y will be least affected as it is camouflaging with the sea weeds. Fish Y can easily escape from the predator by blending with the surrounding environment.


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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
I think B is the correct answer because there is no solidification taking place or else the water would have turned into ice. plus no solidification can take place when water is at room temperature.

Ans 2:

Class : Class 8
It cools towards room temperature so it does not freeze

Ans 3:

Class : Class 7
There is no proper solution for this question which will make it more confusing as everyone will have different opinions in this question.

Ans 4:

Class : Class 6
b is the correct answer

Ans 5:

Class : Class 7
It is cooling towards room temperature so it does not solidify since the freezing point is below room temperature.

Ans 6:

Class : Class 7
i think b is the correct answer

Ans 7:

Class : Class 7
Three states - gas , liquid & solid When hot water temp is going down it will be ultimate become solid ie ice But before becoming ice temp will stagnant for some time where in both states liquid & solid co-exist==> some part of liquid is in ice form. X is the same state where in solid and liquid will co-exist. Hence option 4 is correct(solidification& evaporation) Note: Could not attach gif .It would have made it more clear.

Ans 8:

Class : Class 7
i think b is correct

Ans 9:

Class : Class 8
at 4 degree celsius water starts expanding and 'x' shows the same the room temperature might have been near or equal to the freezing point of water(eg room temperature of regions like arctic and antarctic)

Ans 10:

Class : Class 7
B is the correct answer

Ans 11:

Class : Class 8
why?

Ans 12:

Class : Class 8
Also freezing and melting point of water is 0 degrees celsius

Ans 13:

Class : Class 7
I think b is correct because there is no solidification

Ans 14:

Class : Class 7
i think b is the correct answer

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 4
The answer is gibbous moon.

Ans 2:

Class : Class 4
b

Ans 3:

Class : Class 5

Ans 4:

Class : Class 3

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7
A

Ans 2:

Class : Class 4
a is right

Ans 3:

Class : Class 5
a

Ans 4: (Master Answer)

Class : Class 1

The correct answer is A.

Both plants ‘c’ and ‘d’ bear fruits. This means they are flowering plants as only flowers change into fruits. Plant ‘c’ grows in water i.e., it is an aquatic plant but plant ‘d’ does not grow in water thus, it is a nonaquatic plant. Hence 'W' and 'X' represent plant ‘c’ and ‘d’ respectively.


Ans 5:

Class : Class 7
A

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Subject :NSO    Class : Class 8

There are two different solutions in set up P and Q as shown in figure. The bulb in the set up P glows more brightly as compared to that of the set up Q. What are the possible causes for this?

(i) The connections of the circuit Q may be loose.
(ii) The liquid in Q may have small conductivity.
(iii) Liquid in P is equivalent to a battery while liquid in Q is equivalent to a cell of the battery of liquid P.

A Only (i) and (ii)
B Only (ii) and (iii)
C Only (i)
D Only (ii)


I don't understand (iii)

Ans 1:

Class : Class 9
but how do we know that the circuit is conneced tightly???

Ans 2: (Master Answer)

Class : Class 1

The correct answer is B

In given figures, both the circuits are tightly connected and both the liquids conduct electricity because both the bulbs are glowing. The bulb in the set up P glows more brightly as compared to that of the set up Q might be because of any of the two possibilities:

1. The liquid in Q may have small conductivity. 

2.  Liquid in P is equivalent to a battery while liquid in Q is equivalent to a cell of the battery of liquid P


Ans 3:

Class : Class 8
It’s not mentioned about tightness of the circuits.

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