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1301.

What is respiratory system? List organs of the respiratory system in the order in which air passes thorugh them.

Answer» What is respiratory system? List organs of the respiratory system in the order in which air passes thorugh them.
1302.

What did Malu learn to do from her parents?

Answer» What did Malu learn to do from her parents?
1303.

How is a marine ecosystem different from a freshwater ecosystem?

Answer» How is a marine ecosystem different from a freshwater ecosystem?
1304.

Which matter 🔥 is

Answer»

Which matter 🔥 is

1305.

Do you remember that in Class IV you did an activity with seeds? Now try another one. Take some chana and three bowls. Put five chana in the first bowl and fill it up with water. Put a damp piece of cloth or some cotton wool in the second bowl. Now keep the same number of chanas in it. Make sure that the cotton wool or cloth remains wet. Put the same number of chanas in the third bowl. Do not put anything else in it. Cover all the three bowls. Observe after two days and note the changes in the bowls. Bowl 1 Bowl 2 Bowl 3 Are the seeds getting air? No Yes Yes Are the seeds getting water? What changes did you see? Have the seeds sprouted?

Answer»

Do you remember that in Class IV you did an activity with seeds? Now try another one.





  • Take some chana and three bowls.




  • Put five chana in the first bowl and fill it up with water.




  • Put a damp piece of cloth or some cotton wool in the second bowl. Now keep the same number of chanas in it. Make sure that the cotton wool or cloth remains wet.




  • Put the same number of chanas in the third bowl. Do not put anything else in it. Cover all the three bowls.





Observe after two days and note the changes in the bowls.

















































Bowl 1



Bowl 2



Bowl 3



Are the seeds getting air?



No



Yes



Yes



Are the seeds getting water?















What changes did you see?















Have the seeds sprouted?
















1306.

62. A bird is moves sequentially 300m north , 400m east and then 1200m vertically up. The displacement of bird is

Answer» 62. A bird is moves sequentially 300m north , 400m east and then 1200m vertically up. The displacement of bird is
1307.

Some animals living inside water do not have gills. Name two such animals. How do they breathe?

Answer» Some animals living inside water do not have gills. Name two such animals. How do they breathe?
1308.

What is an elephant n omnivore,carnivore or a herbivore??

Answer»

What is an elephant n omnivore,carnivore or a herbivore??

1309.

The last planet of our solar system is:

Answer»

The last planet of our solar system is:


1310.

58. In gas in liq. What is the factor that affect the pressure

Answer» 58. In gas in liq. What is the factor that affect the pressure
1311.

____ are referred to as farmer's best friends.

Answer» ____ are referred to as farmer's best friends.
1312.

Gravity is a fundamental force acting between all objects and its effect ___ with distance.

Answer»

Gravity is a fundamental force acting between all objects and its effect ___ with distance.


1313.

A person who exhibits these traits is said to be ____.

Answer»

A person who exhibits these traits is said to be ____.


1314.

In this type of boat, the fulcrum on the oar is:

Answer»

In this type of boat, the fulcrum on the oar is:




1315.

Formation of a solution from two components can be considered as { (i) Pure solvent → separated solvent molecules, Δ H_1{ (ii) Pure solute → separated solvent molecules, Δ H_2{ (iii) Separated solvent and solute molecules →{ Solution, Δ H_3{ (1) Δ H_ solun =Δ H_1+Δ H_2-AH_3{ (2) Δ H_ soln =Δ H_1-Δ H_2-AH_3{ (4) Δ H_ soln =Δ H_3-Δ H_1-Δ H_2

Answer» Formation of a solution from two components can be considered as { (i) Pure solvent → separated solvent molecules, Δ H_1{ (ii) Pure solute → separated solvent molecules, Δ H_2{ (iii) Separated solvent and solute molecules →{ Solution, Δ H_3{ (1) Δ H_ solun =Δ H_1+Δ H_2-AH_3{ (2) Δ H_ soln =Δ H_1-Δ H_2-AH_3{ (4) Δ H_ soln =Δ H_3-Δ H_1-Δ H_2
1316.

10.What is the meaning of position?

Answer» 10.What is the meaning of position?
1317.

What is the state of matter in interstetial spaces?

Answer» What is the state of matter in interstetial spaces?
1318.

There is a high tide at A and B, while there is a low tide at C and D. Why does A or B have high tides?

Answer»

There is a high tide at A and B, while there is a low tide at C and D. Why does A or B have high tides?


1319.

Sangeeta thinks it is useless to keep old things in a museum. How would you convince her that it is important to have a museum? Why do you think the chapter is named, ‘Walls Tell Stories’?

Answer»


  • Sangeeta thinks it is useless to keep old things in a museum. How would you convince her that it is important to have a museum?




  • Why do you think the chapter is named, ‘Walls Tell Stories’?



1320.

what is colour of the complex?

Answer» what is colour of the complex?
1321.

Select the one which is NOT used to prepare the bonfire 'Mezi'.

Answer»

Select the one which is NOT used to prepare the bonfire 'Mezi'.

1322.

Do you know anyone who has had malaria? How did they find out that they had malaria? What problems did they have on having malaria? What other diseases can be caused by mosquito bites? In which season is malaria more common? Why do you think this happens? What do you do in your house to protect yourself from mosquitoes? Also find out from your friends about what they do? Look at the report of the blood test given here. Which words in the report help us to know that the person has malaria?

Answer»

  • Do you know anyone who has had malaria?

  • How did they find out that they had malaria?

  • What problems did they have on having malaria?

  • What other diseases can be caused by mosquito bites?

  • In which season is malaria more common? Why do you think this happens?

  • What do you do in your house to protect yourself from mosquitoes? Also find out from your friends about what they do?
























  • Look at the report of the blood test given here. Which words in the report help us to know that the person has malaria?










1323.

Refer to diagram given below and answer the following questions. Identify the organism. State whether it is unicellular or multicellular. Name the projections indicated with arrows that are protruding out of its body.

Answer» Refer to diagram given below and answer the following questions.





  1. Identify the organism. State whether it is unicellular or multicellular.

  2. Name the projections indicated with arrows that are protruding out of its body.



1324.

Which of the following symptoms is shown by a child, whose diet is deficient in proteins?

Answer»

Which of the following symptoms is shown by a child, whose diet is deficient in proteins?



1325.

Act out the story. Play the parts of the monkey, the wise woman and the mother, in turns in the classroom. What would you do if you had a magic wand?I would turn it round and round and turn a book into a _________________.I would turn a dog into a _________________.I would turn a pencil into a _________________.I would turn you into a _________________.

Answer»

  • Act out the story. Play the parts of the monkey, the wise woman and the mother, in turns in the classroom.





  • What would you do if you had a magic wand?


I would turn it round and round and turn a book into a _________________.

I would turn a dog into a _________________.

I would turn a pencil into a _________________.

I would turn you into a _________________.
1326.

What are some common sources of water in a village?

Answer» What are some common sources of water in a village?
1327.

संकलित साखियों और पदों के आधार पर कबीर के धार्मिक और सांप्रदायिक सद्भाव संबंधी विचारों पर प्रकाश डालिए।

Answer»

संकलित
साखियों
और
पदों
के
आधार
पर
कबीर
के
धार्मिक
और
सांप्रदायिक
सद्भाव
संबंधी
विचारों

पर
प्रकाश
डालिए।

1328.

carry crawl tired turtle

Answer» carry crawl tired turtle
1329.

Excessive food eating habits could result in ____.

Answer»

Excessive food eating habits could result in ____.


1330.

If earth suddenly stops rotating about its axis , the increase in the temperature will be (1) R^2 w^2/5Js (2) R^2 w^2/Js (3) R^2 m w^2 /Js (4) None of these

Answer» If earth suddenly stops rotating about its axis , the increase in the temperature will be (1) R^2 w^2/5Js (2) R^2 w^2/Js (3) R^2 m w^2 /Js (4) None of these
1331.

How does our body ensure that the food enters only the food pipe and not the windpipe?

Answer» How does our body ensure that the food enters only the food pipe and not the windpipe?
1332.

If the fish is being fried in a neighbouring home, we can smell it sitting it our own home. Name the process which brings this smell to us.

Answer» If the fish is being fried in a neighbouring home, we can smell it sitting it our own home. Name the process which brings this smell to us.
1333.

A particle moves under the effect of a force F=3x,where x is the displacement \lbrack force is in N and displacement is in m\rbrack.The particle is displaced from x=0 to x=4m.The net work done by force in this process i

Answer» A particle moves under the effect of a force F=3x,where x is the displacement \lbrack force is in N and displacement is in m\rbrack.The particle is displaced from x=0 to x=4m.The net work done by force in this process i
1334.

Question 22Fruits detached from a tree fall down due to force of gravity. We know that a force arises due to interaction between two objects. Name the objects interacting in this case.

Answer»

Question 22

Fruits detached from a tree fall down due to force of gravity. We know that a force arises due to interaction between two objects. Name the objects interacting in this case.



1335.

In a 0.2 molar aqueous solution of a weak acid H,the degree of ionization is 0.3. The freezing pointof the solution will be nearest to

Answer» In a 0.2 molar aqueous solution of a weak acid H,the degree of ionization is 0.3. The freezing pointof the solution will be nearest to
1336.

Name and explain different Horizons of soil.

Answer» Name and explain different Horizons of soil.
1337.

Question 5(a) Why do some objects sink into water?(b) Which of the following substances sink into water?Stone, sponge, iron nail, metal key and flower.(c) In a glass tumbler, it was observed from top to bottom – oil→water→honey were present in different layers. What can you tell about the density of honey with respect to water?

Answer»


Question 5



(a) Why do some objects sink into water?



(b) Which of the following substances sink into water?



Stone, sponge, iron nail, metal key and flower.



(c) In a glass tumbler, it was observed from top to bottom – oil→water→honey were present in different layers. What can you tell about the density of honey with respect to water?



1338.

Remplissez les blancs et retrouvez le nom.

Answer» Remplissez les blancs et retrouvez le nom.
1339.

How do squirrels hide their food?

Answer» How do squirrels hide their food?
1340.

calculate molality of M molar solution density is d g/m

Answer» calculate molality of M molar solution density is d g/m
1341.

In an AM superheterodyne receiver that local osicllator frequency of the mixer is set at thehigher of the two possible values, such that fLO>fc always. The intermediate frequency(IF) of the receier is 450 kHz and the receiver is tuned to a station carrier frequency of 600kHz. If the RF amplifier is failed to reject the image frequency and the loaded quality factorof the RF amplifier is 100, then the image rejection ratio of the receiver at the selectedstation frequency will be_______210

Answer» In an AM superheterodyne receiver that local osicllator frequency of the mixer is set at thehigher of the two possible values, such that fLO>fc always. The intermediate frequency(IF) of the receier is 450 kHz and the receiver is tuned to a station carrier frequency of 600kHz. If the RF amplifier is failed to reject the image frequency and the loaded quality factorof the RF amplifier is 100, then the image rejection ratio of the receiver at the selectedstation frequency will be_______
  1. 210
1342.

In tissue culture medium, the embryoids formed from pollen grains is due to:

Answer»

In tissue culture medium, the embryoids formed from pollen grains is due to:



1343.

Question 5Which is the ultimate source of energy?(a) Water(b) Sun(c) Uranium(d) Fossil fuels

Answer» Question 5

Which is the ultimate source of energy?



(a) Water

(b) Sun

(c) Uranium

(d) Fossil fuels
1344.

When you see different animals, do you have any questions about them? Make a list of ten such questions.

Answer»

When you see different animals, do you have any questions about them? Make a list of ten such questions.

1345.

Here are some answers(i) The colour of the ant is black.(ii) It lives on land.(iii) It has two long antennae.(iv) It crawls on the ground.(v) It eats sugar.Now frame questions for the above answers.

Answer»

Here are some answers



(i) The colour of the ant is black.



(ii) It lives on land.



(iii) It has two long antennae.



(iv) It crawls on the ground.



(v) It eats sugar.



Now frame questions for the above answers.

1346.

Name the force that acts on all bodies on the earth at all times.

Answer» Name the force that acts on all bodies on the earth at all times.
1347.

What are the similarities and differences between a vulture and a lion in their mode of taking in food?

Answer» What are the similarities and differences between a vulture and a lion in their mode of taking in food?
1348.

Write three examples of food that are preserved by adding following:1. Sugar solution2. Salt

Answer» Write three examples of food that are preserved by adding following:

1. Sugar solution

2. Salt
1349.

From the text, write the sentence that tells you the following.(i) The giant reapers were fascinated by Gulliver._________________________________________(ii) Gulliver was a learned man._________________________________________(iii) The farmer's son thought Gulliver was a toy._________________________________________(iv) The farmer's wife was a kind-hearted woman.________________________________________

Answer»

From the text, write the sentence that tells you the following.



(i) The giant reapers were fascinated by Gulliver.



_________________________________________



(ii) Gulliver was a learned man.



_________________________________________



(iii) The farmer's son thought Gulliver was a toy.



_________________________________________



(iv) The farmer's wife was a kind-hearted woman.



________________________________________

1350.

Que faut-il faire pour sauver notre planète ? As-tu des idées ?.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................

Answer» Que faut-il faire pour sauver notre planète ? As-tu des idées ?

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