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51.

In the Solar System, an asteroid belt is present in between ___ and ___.

Answer»

In the Solar System, an asteroid belt is present in between ___ and ___.


52.

Why was sugar and jaggery mixed into the mango pulp and dried in the sun? Why did Appa first choose the ripest mangoes to be used for making the mamidi tandra? How did the brothers make the mamidi tandra? Write down step-by-step what they did for this. What things are made in your house from ripe and unripe mangoes? Make a list of all the different types of pickles that you know about.

Answer»

  • Why was sugar and jaggery mixed into the mango pulp and dried in the sun?

  • Why did Appa first choose the ripest mangoes to be used for making the mamidi tandra?

  • How did the brothers make the mamidi tandra? Write down step-by-step what they did for this.

  • What things are made in your house from ripe and unripe mangoes?

  • Make a list of all the different types of pickles that you know about.

53.

A quarter disc of radius R and mass m is rotating about the axis oo'perpendicular to the plain of the disc .Rotational K.E. of the quarter disc is?

Answer» A quarter disc of radius R and mass m is rotating about the axis oo'perpendicular to the plain of the disc .Rotational K.E. of the quarter disc is?
54.

Jhoolan’s mouth started watering when she heard the word imli. When does your mouth water? List five things you like to eat and describe their taste. Do you like only one kind of taste or different ones? Why? Jhoolan put a few drops of lemon juice in Jhumpa’s mouth. Do you think we can make out the taste with just a few drops? If someone were to put a few seeds of saunf (aniseed) on your tongue, would you be able to tell with your eyes closed? How? How did Jhumpa make out the fried fish? Can you guess the names of certain things only by their smell, without seeing or tasting them? What are these things? Has anyone ever told you to hold your nose before taking a medicine? Why do you think they tell you to do this?

Answer»

  • Jhoolan’s mouth started watering when she heard the word imli. When does your mouth water? List five things you like to eat and describe their taste.


  • Do you like only one kind of taste or different ones? Why?




  • Jhoolan put a few drops of lemon juice in Jhumpa’s mouth. Do you think we can make out the taste with just a few drops?




  • If someone were to put a few seeds of saunf (aniseed) on your tongue, would you be able to tell with your eyes closed? How?




  • How did Jhumpa make out the fried fish? Can you guess the names of certain things only by their smell, without seeing or tasting them? What are these things?




  • Has anyone ever told you to hold your nose before taking a medicine? Why do you think they tell you to do this?



55.

What are known as lungs of earth?

Answer» What are known as lungs of earth?
56.

When a liquid can no longer dissolve more salt(solute) in it, the solution is said to be a ___ solution.

Answer»

When a liquid can no longer dissolve more salt(solute) in it, the solution is said to be a ___ solution.

57.

Choose the object that is not rough.

Answer»

Choose the object that is not rough.

58.

Explain the different parts of a plant in detail.

Answer» Explain the different parts of a plant in detail.
59.

Under picture A sentences describe what each person/animal is doing. Under picture B write down what each is doing.Disclaimer: Kindly refer the textbook for the images.Use the words 'he', 'she', 'it', 'they' instead of a lady, a man, two girls and a dog.A lady is cycling. ________________________________A man is running. ________________________________Two girls are playing. _____________________________A dog is sleeping. _________________________________

Answer» Under picture A sentences describe what each person/animal is doing. Under picture B write down what each is doing.



Disclaimer: Kindly refer the textbook for the images.





Use the words 'he', 'she', 'it', 'they' instead of a lady, a man, two girls and a dog.

A lady is cycling. ________________________________



A man is running. ________________________________



Two girls are playing. _____________________________



A dog is sleeping. _________________________________
60.

105g water is saturated with the ammonia gas to from a solution of density 1.0/ml and containing 30% ammonia, by mass. What is the volume of solution formed

Answer» 105g water is saturated with the ammonia gas to from a solution of density 1.0/ml and containing 30% ammonia, by mass. What is the volume of solution formed
61.

A food chain is a series of relationships between members of an ecosystem so that _________ can be transferred between them.

Answer»

A food chain is a series of relationships between members of an ecosystem so that _________ can be transferred between them.


62.

Which part of the Moon is dark?

Answer»

Which part of the Moon is dark?


63.

More than One Answer Typeएक से अधिक उत्तर प्रकार के प्रश्नObserve the following figures in which metal pieces are suspended in aqueous salt solutions. At room temperature, the colour change will be observed inनिम्नलिखित चित्रों का प्रेक्षण कीजिए जिसमें धातु के टुकड़ों को लवण के जलीय विलयनों में डाला गया है। कक्ष ताप पर किसमें रंग में परिवर्तन प्रेक्षित होगा?

Answer»

More than One Answer Type

एक से अधिक उत्तर प्रकार के प्रश्न



Observe the following figures in which metal pieces are suspended in aqueous salt solutions. At room temperature, the colour change will be observed in



निम्नलिखित चित्रों का प्रेक्षण कीजिए जिसमें धातु के टुकड़ों को लवण के जलीय विलयनों में डाला गया है। कक्ष ताप पर किसमें रंग में परिवर्तन प्रेक्षित होगा?

64.

How does your father/uncle shave his face every day?He lathers his face with shaving cream, then he uses his razor. He runs it over his face, in even strokes. After this, he washes his face and wipes it to get rid of the lather.Now describe two of the following processes.(i) How to send a letter/e-mail(ii) How to make a salad.(iii) How to prepare a garden bed to grow flowers.(iv) How to paint a mural or a wall picture.

Answer» How does your father/uncle shave his face every day?

He lathers his face with shaving cream, then he uses his razor. He runs it over his face, in even strokes. After this, he washes his face and wipes it to get rid of the lather.



Now describe two of the following processes.

(i) How to send a letter/e-mail

(ii) How to make a salad.

(iii) How to prepare a garden bed to grow flowers.

(iv) How to paint a mural or a wall picture.
65.

Why cicyle doesnt goes backward by paddling but goes forward by padlin

Answer» Why cicyle doesnt goes backward by paddling but goes forward by padlin
66.

Amagnetic needle free to rotate in a vertical plane parallel to themagnetic meridian has its north tip pointing down at 22º withthe horizontal. The horizontal component of the earth’smagnetic field at the place is known to be 0.35 G. Determine themagnitude of the earth’s magnetic field at the place.

Answer»

A
magnetic needle free to rotate in a vertical plane parallel to the

magnetic meridian has its north tip pointing down at 22º with
the horizontal. The horizontal component of the earth’s
magnetic field at the place is known to be 0.35 G. Determine the
magnitude of the earth’s magnetic field at the place.

67.

List two differences between compound and electron microscopes.

Answer» List two differences between compound and electron microscopes.
68.

Difference between coefficient of performance and heat engine

Answer» Difference between coefficient of performance and heat engine
69.

The Truth Balloon Suppose you are goingon a camping holiday.What are the fourmost importantthings you willcarry with you?Choose fromthe tagsattached tothe hot airballoon.____________________________________________________________________________________________Disclaimer: Kindly refer the textbook for the image.

Answer»
The Truth Balloon


Suppose you are going

on a camping holiday.

What are the four

most important

things you will

carry with you?

Choose from

the tags

attached to

the hot air

balloon.



_______________________

_______________________

_______________________

_______________________



Disclaimer: Kindly refer the textbook for the image.
70.

how many molecules of O_{2_{}} are present in 1L air containing 80% vol of O_{2 }at STP ?

Answer» how many molecules of O_{2_{}} are present in 1L air containing 80% vol of O_{2 }at STP ?
71.

Paheli has a rose plant in her garden. How can she increase the number of rose plants in the garden? ​

Answer» Paheli has a rose plant in her garden. How can she increase the number of rose plants in the garden? ​
72.

Ozone layer protects us from harmful _______ rays of the sun.

Answer»

Ozone layer protects us from harmful _______ rays of the sun.



73.

Question 24When a person is suffering from severe cold, he or she cannot(a) differentiate the taste of an apple from that of an ice cream(b) differentiate the smell of a perfume from that of an agarbatti(c) differentiate red light from green light(d) differentiate a hot object from a cold object

Answer»

Question 24

When a person is suffering from severe cold, he or she cannot



(a) differentiate the taste of an apple from that of an ice cream

(b) differentiate the smell of a perfume from that of an agarbatti

(c) differentiate red light from green light

(d) differentiate a hot object from a cold object



74.

For RCC construction the maximum size of Coarse aggregate is limited to

Answer»

For RCC construction the maximum size of Coarse aggregate is limited to

75.

In a certain coded language , ‘pit dar na’ means ‘you are good’ ‘dar tok pa’ means ‘good and bad’ ‘tim na tok’ means ‘they are bad’ What word in the language represents ‘they’ ?

Answer» In a certain coded language ,
‘pit dar na’ means ‘you are good’
‘dar tok pa’ means ‘good and bad’
‘tim na tok’ means ‘they are bad’
What word in the language represents ‘they’ ?
76.

In parachute what gases are used for it to fly.

Answer» In parachute what gases are used for it to fly.
77.

Keshav has a lever to lift heavy rocks. What should he do to reduce the force required to lift the rocks?

Answer»

Keshav has a lever to lift heavy rocks. What should he do to reduce the force required to lift the rocks?


78.

What are auroras and how do auroras form?

Answer» What are auroras and how do auroras form?
79.

Activity: Grow a plantThings required − A glass, blotting paper, some sand, some seeds of beans or rajma.Method1. Line the blotting paper inside the glass.2. Place the sand in the glass.3. Wet the sand.4. Place a few seeds between the blotting paper and the glass.5. See that the seeds are separate from each other.6. See how the roots and shoots of the seeds grow.Make a Friendship SaladThings required −Carrots-2, Tomatoes-2, Peas-2 spoonfuls, Lemon-1.Method1. Wash all the vegetables well.2. Cut the carrots, tomatoes and lemon.3. Mix the peas, carrots and tomatoes together.4. Squeeze lemon juice on top.5. Add salt.6. Mix well.7. Share your salad with your friends.

Answer» Activity: Grow a plant

Things required − A glass, blotting paper, some sand, some seeds of beans or rajma.



Method

1. Line the blotting paper inside the glass.

2. Place the sand in the glass.

3. Wet the sand.

4. Place a few seeds between the blotting paper and the glass.

5. See that the seeds are separate from each other.

6. See how the roots and shoots of the seeds grow.



Make a Friendship Salad

Things required −

Carrots-2, Tomatoes-2, Peas-2 spoonfuls, Lemon-1.



Method

1. Wash all the vegetables well.

2. Cut the carrots, tomatoes and lemon.

3. Mix the peas, carrots and tomatoes together.

4. Squeeze lemon juice on top.

5. Add salt.

6. Mix well.

7. Share your salad with your friends.
80.

Objects made of plastic usually ____ when dropped in water.

Answer»

Objects made of plastic usually ____ when dropped in water.



81.

In how many ways can the letter of the word insurance can be arranged so that vowels occur at even places

Answer» In how many ways can the letter of the word insurance can be arranged so that vowels occur at even places
82.

Are immiscible and insoluble same

Answer» Are immiscible and insoluble same
83.

Miya Balishtiye was confused when he saw the woodcutter blowing on his cold hands to make them warm and on the hot potatoes to cool them. Have you warmed your hands in winter by blowing on them when they are cold? How does it feel? Blow hard from your mouth onto your hands. How did you find the air from your mouth as compared to the air around? Was it hotter, or cooler? Now put your hands at some distance from your mouth, and blow again. Does the air from your mouth feel warm? Why?

Answer»

Miya Balishtiye was confused when he saw the woodcutter blowing on his cold hands to make them warm and on the hot potatoes to cool them.





  • Have you warmed your hands in winter by blowing on them when they are cold? How does it feel?




  • Blow hard from your mouth onto your hands. How did you find the air from your mouth as compared to the air around? Was it hotter, or cooler?




  • Now put your hands at some distance from your mouth, and blow again. Does the air from your mouth feel warm? Why?



84.

If the minute and the hour hands are extended to touch the rim of a clock, the region inscribed by them is a :

Answer»

If the minute and the hour hands are extended to touch the rim of a clock, the region inscribed by them is a :


85.

What measure do we use to compare the hotness or coldness of a body?

Answer» What measure do we use to compare the hotness or coldness of a body?
86.

Make a sketch showing groundwater and water table. Label it.​

Answer» Make a sketch showing groundwater and water table. Label it.​
87.

कविता एक ओर जग-जीवन का भार लिए घूमने की बात करती है और दूसरी ओर मैं कभी न जग का ध्यान किया करता हूँ- विपरीत से लगते इन कथनों का क्या आशय है?

Answer»
कविता एक ओर जग-जीवन का भार लिए घूमने की बात करती है और दूसरी ओर मैं कभी न जग का ध्यान किया करता हूँ- विपरीत से लगते इन कथनों का क्या आशय है?
88.

What are the different kinds of vehicles that you can see? What do you think they need as fuel? Which of the vehicles do you think give off smoke? Put a red mark on those.

Answer»


  • What are the different kinds of vehicles that you can see?




  • What do you think they need as fuel?




  • Which of the vehicles do you think give off smoke? Put a red mark on those.



89.

Seeds that are used as spices in your home. Seeds of vegetables. Seeds of fruits. Light seeds (check by blowing them). Seeds which are flat. Make more groups. How many groups of seeds did you make? Do you know any games that you can play with seeds? Discuss with your friends.

Answer»


  • Seeds that are used as spices in your home.




  • Seeds of vegetables.




  • Seeds of fruits.




  • Light seeds (check by blowing them).




  • Seeds which are flat.




  • Make more groups. How many groups of seeds did you make?




  • Do you know any games that you can play with seeds?





Discuss with your friends.

90.

Write a short note on Ahimsa silk.

Answer» Write a short note on Ahimsa silk.
91.

Sun → Plants→ Mice → Snakes → Hawks From the given food chain, which organism’s population is likely to decrease if the number of mice increases?

Answer»

Sun Plants Mice Snakes Hawks

From the given food chain, which organism’s population is likely to decrease if the number of mice increases?


92.

M(OH)_x has K_{sp}=2.56\ast10^{-13} and solubility in water is 10^{-3} mol/L.Calculate the value of x:

Answer» M(OH)_x has K_{sp}=2.56\ast10^{-13} and solubility in water is 10^{-3} mol/L.Calculate the value of x:
93.

Are these sentences TRUE or FALSE?(a) The poet tells the child to be afraid when it is dark.__________(b) The poet says that stars will always shine at night.__________(c) The poet tells the child to think of friends after it is dark._________

Answer» Are these sentences TRUE or FALSE?

(a) The poet tells the child to be afraid when it is dark.__________

(b) The poet says that stars will always shine at night.__________

(c) The poet tells the child to think of friends after it is dark._________
94.

Part of the skull that protects the brain is made up of ____ bones.

Answer»

Part of the skull that protects the brain is made up of ____ bones.


95.

Is there a lake, well or stepwell near your house or school?Visit it and find out more about it. How old is it? Who got it built? What kinds of buildings are around it? Is the water clean? Is it cleaned regularly? Who all use the water? Is there any festival celebrated at this place? Is there any water today, or is it dry?

Answer»

Is there a lake, well or stepwell near your house or school?



Visit it and find out more about it.





  • How old is it? Who got it built?




  • What kinds of buildings are around it?




  • Is the water clean? Is it cleaned regularly?




  • Who all use the water?




  • Is there any festival celebrated at this place?




  • Is there any water today, or is it dry?



96.

Take a clay pot or a tin can with a wide mouth. Make a small hole at the bottom of the can. Fill your can with soil. Put four or five seeds of the same kind in the soil and press them gently. Different group can plant different kinds of seeds, such as mustard (sarson), fenugreek (methi), sesame (til) or coriander (dhania).WriteName of the seed : ____________The date on which you planted them: ___________The day you observe something coming out of the soil, start filling the table: Date Height of the plant (in cm) Number of leaves seen Any other change

Answer»

Take a clay pot or a tin can with a wide mouth. Make a small hole at the bottom of the can. Fill your can with soil. Put four or five seeds of the same kind in the soil and press them gently. Different group can plant different kinds of seeds, such as mustard (sarson), fenugreek (methi), sesame (til) or coriander (dhania).



Write



Name of the seed : ____________



The date on which you planted them: ___________



The day you observe something coming out of the soil, start filling the table:











































Date



Height of the plant (in cm)



Number of leaves seen



Any other change






































































97.

A planet P revolve around the sun in a circular orbit with sun as the centre which is coplaner and concentric to the circular orbit of earth E around the sun P and E revolve in the same direction the time required for revolution of P and E are 3 yrs and 1yrs respectively what is the time required for P to make 1 revolution around the sun relative to earth

Answer» A planet P revolve around the sun in a circular orbit with sun as the centre which is coplaner and concentric to the circular orbit of earth E around the sun P and E revolve in the same direction the time required for revolution of P and E are 3 yrs and 1yrs respectively what is the time required for P to make 1 revolution around the sun relative to earth
98.

58. What is the total no of spectral lines in infrared region if e falls to ground state from seventh orbit

Answer» 58. What is the total no of spectral lines in infrared region if e falls to ground state from seventh orbit
99.

The Oil and Natural Gas Corporation Limited the first oil company from India who joined Zero Routine Flaring by 2030 Initiative .Which of the following statements are incorrect in regard to the statement given above: A. Zero Routine Flaring by 2030 Initiative is the initiative of UNFCCC. B. It is aimed at curbing routine gas flaring at oil production sites around the world by 2030. Choose your answer from the following codes:

Answer»

The Oil and Natural Gas Corporation Limited the first oil company from India who joined Zero Routine Flaring by 2030 Initiative .Which of the following statements are incorrect in regard to the statement given above:

A. Zero Routine Flaring by 2030 Initiative is the initiative of UNFCCC.

B. It is aimed at curbing routine gas flaring at oil production sites around the world by 2030.

Choose your answer from the following codes:


100.

मुहावरोंके प्रयोग सेभाषा आकर्षकबनती है। मुहावरेवाक्य के अंगहोकर प्रयुक्तहोते हैं। इनकाअक्षरश:अर्थनहीं बल्किलाक्षणिक अर्थलिया जाता है।पाठ में अनेकमुहावरे आए हैं।टोपी को लेकरतीन मुहावरेहैं; जैसे−कितनों को टोपीपहनानी पड़तीहै। शेष मुहावरोंको खोजिए औरउनका अर्थ ज्ञातकरने का प्रयासकीजिए।

Answer»

मुहावरों
के प्रयोग से
भाषा आकर्षक
बनती है। मुहावरे
वाक्य के अंग
होकर प्रयुक्त
होते हैं। इनका
अक्षरश
:
अर्थ
नहीं बल्कि
लाक्षणिक अर्थ
लिया जाता है।
पाठ में अनेक
मुहावरे आए हैं।
टोपी को लेकर
तीन मुहावरे
हैं
; जैसे

कितनों को टोपी
पहनानी पड़ती
है। शेष मुहावरों
को खोजिए और
उनका अर्थ ज्ञात
करने का प्रयास
कीजिए।