Monday, August 24, 2020

CBSE PORTAL : “CBSE Class-12 Exam 2020 : Question Paper (Engineering Science)” plus 7 more

CBSE PORTAL : “CBSE Class-12 Exam 2020 : Question Paper (Engineering Science)” plus 7 more


CBSE Class-12 Exam 2020 : Question Paper (Engineering Science)

Posted: 24 Aug 2020 05:37 AM PDT



CBSE Class-12 Exam 2020 : Question Paper (Engineering Science)



  • Subject :-Engineering Science
  • Class : XII
  • Year : 2020

PART – I

ENGINEERING DRAWING

 SECTION A

Answer any ten questions out of the given 12 questions of 1 mark each : 1x10=10

1. Which of the following is not a temporary fastener ?
(i) Riveted joint
(ii) Welded joint
(iii) Nut and Bolt

2. In a V-thread, which of the following is the angle between the flanks ?
(i) 450
(ii) 300
(iii) 600

3. Which of the following is not a type of thread ?
(i) BSF
(ii) BSW
(iii) Isometric

4. For square rods, which of the following joints is preferred ?
(i) Socket and Spigot joint
(ii) Gib and Cotter joint
(iii) Sleeve and Cotter joint

5. Lead in a multiple thread is obtained by multiplying pitch with number of threads. Is this correct ?

6. A protected coupling is enclosed in a cage so that it does not harm any one. Is this correct ?

7. Spring washer is a sort of locking device. Is this correct ?

8. Give any two types of sections of solids.

9. A circular plane is inclined to HP and is perpendicular to VP. Which of the following is the top view ?
(i) Ellipse
(ii) Circle
(iii) A line

10. A polyhedron having a plane base and triangular faces meeting at apex,is called as :
(i) Pyramid
(ii) Prism
(iii) Cone

11. The top portion of a cone is cut by a plane parallel to base. What is the remaining portion called from the following ?
(i) Frustrum
(ii) Ellipse
(iii) Circle

12. Which method is used for development of prism from the following ?
(i) Parallel line development
(ii) Radial line development
(iii) Appropriation development

SECTION B

Answer any five questions out of the given 7 questions of 3 marks each : 3x5=15

13. Name any three temporary fasteners.
14. Draw the profile of a buttress thread and give its angle.
15. Give examples of three types of bolts.
16. Name any three types of rivet heads.
17. Draw the sketch of a Gib Head key.
18. Give an example of a revolved section.
19. Draw the development of a triangular pyramid.

SECTION C

Answer any three questions out of the given 7 questions of 5 marks each : 5x3=15

20. A regular hexagonal prism, base 25 mm side, axis 70 mm long is resting on its base on HP having a side of the base parallel to VP. It is cut by a section plane inclined at 45 to HP, perpendicular to VP, and passing through a point on axis 30 mm above the base. Draw its sectional plan.

21. Draw the development of lateral surfaces of a square pyramid of 30 mm base and 50 mm height.

22. Draw a free hand plan and sectional elevation of a double-riveted lap-joint.

23. Draw a free hand sketch of any one type of foundation bolt.

24. Draw a free hand sketch of the eye end of a Knuckle joint.

25. Draw a free hand sketch of split muff coupling.

26. What is the function of a locknut ? Draw a sketch of any type of locknut.

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CBSE Class-12 Exam 2020 : Question Paper (Engineering Graphics)

Posted: 24 Aug 2020 05:29 AM PDT



CBSE Class-12 Exam 2020 : Question Paper (Engineering Graphics)



  • Subject :-Engineering Graphics
  • Class : XII
  • Year : 2020

1. Answer the following multiple choice questions. Print the correct choice on your drawing sheet. 1x5=5

(i) In first angle method of projection

(A) The object lies between the observer and the plane of projection.
(B) The plane of projection lies between the observer and the object.
(C) The observer lies between the object and the plane of projection.
(D) The object lies between the poles.

(ii) A square thread of nominal diameter 40 mm and pitch 4 mm is designated as
(A) SE 40x4
(B) SQ 160
(C) SQ 40x4
(D) SE 160

(iii) A J-bolt is usually provided with a square neck to
(A) Add tension to the bolt.
(B) Prevent the bolt rotation while tightening.
(C) Prevent its use in machine tool table.
(D) To look better.

(iv) Which of the following are the components of an assembly of Gib and Cotter Joint ?
(A) Rod with socket end, rod with spigot end, gib and cotter
(B) Flanges, rods, gib and cotter
(C) Sleeve, rods, gib and cotter
(D) Rod with fork end, eye end rod, gib and cotter

(v) The crowning provided on the rim of a flat belt pulley is usually
(A) 2 mm
(B) 20 mm
(C) 50 mm
(D) 100 mm

2. (i) Construct an isometric scale of length 70 mm. 4
(ii) A cone (base diameter 60 mm, height 70 mm) is resting on its base on H.P. Its axis is perpendicular to H.P. Draw its isometric projection. Show the axis and indicate the direction of viewing. Give all the dimensions. 7

(iii) A horizontal pentagonal prism (base edge 25 mm, length of axis 60 mm) is resting on one of its rectangular faces, centrally on the top surface of a cube (side 50 mm). The axis of the cube is perpendicular to H.P. and the axis of the prism is perpendicular to V.P. Draw the isometric projection of the combination of solids. Show the common axis and indicate the direction of viewing. Give all the dimensions. 13

3. (i) Draw to scale 1 : 1, the standard profile of a British Standard Whitworth thread (BSW), taking enlarged pitch as 40 mm. Give standard dimensions. 8
OR
Draw to scale 1 : 1, the sectional front view of a Single Riveted Lap Joint for joining the plates, each of thickness 9 mm. Give standard dimensions. 8

(ii) Sketch freehand, the front view and side view of a Horizontal Collar Stud of diameter 15 mm. Keep its axis parallel to VP and HP. Give standard dimensions. 5 
OR
Sketch freehand, the front view and top view of a Cheese Head Screw of diameter 20 mm keeping its axis vertical. Give standard dimensions.

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CBSE Class-10 Exam 2020 : Question Paper (Health Care Service)

Posted: 24 Aug 2020 05:15 AM PDT



CBSE Class-10 Exam 2020 : Question Paper (Health Care Service)



  • Subject : Health Care Service
  • Time allowed : 3 hours
  • Maximum Marks : 80

SECTION A

(Employability Skills)

Answer any 4 questions out of the given 6 questions of 1 mark each. 1x4=4

Fill in the blanks :

1. A group of words that work together to communicate an element of speech is called ___________ . 1

2. The school of Hindu philosophy which reduces stress and includes a series of postures and breathing exercises to achieve control of body and mind is called ___________ . 1

3. Having conscious knowledge of one’s own self, capabilities, feelings and one’s own character is called ___________ . 1 

4. A ___________ is a software that helps you type and work with text on a computer. 1

5. The main aim of Start-Up India is to encourage ___________ among the youth of India. 1

6. E-waste comprises of discarded ___________ devices. 1

Answer any 3 questions out of the given 5 questions of 2 marks each. 2x3=6

7. What is a sentence ? 2
8. Explain the importance of stress management. 2
9. Write down the functions of ‘Minimize button’ and ‘Close button’. 2
10. List any four characteristics of entrepreneurship. 2
11. What are the various factors that cause ecological imbalance ? 2

SECTION B

(Subject Skills)

Answer any 10 questions out of the given 12 questions of 1 mark each. 1x10=10

12. Write down the full form of WHO. 1
13. What is the main function of medical record department in hospitals ? 1
14. What is meant by soft diet ? 1
15. Define pulse rate. 1
16. Name the viral disease which is also known as hydrophobia. 1
17. What do you understand by the term nosocomial infection ? 1
18. What do you mean by cancer ? 1
19. List two common causes of bleeding. 1
20. Define histology. 1
21. What is the main function of adipose tissue in the body ? 1
22. Name the staff who is the first point of contact for patients, doctors and staff members in a hospital. 1
23. Write the full form of PRO. 1

Answer any 4 questions out of the given 6 questions of 2 marks each. 2x4=8

24. Enumerate any four professionals available in a hospital. 2
25. List four factors that affect the nutritional status of a person. 2
26. Enumerate four properties of an ideal disinfectant. 2
27. How will you prepare one litre of ORS ? 2
28. Write down the difference between elevation and depression in body movements. 2
29. How can an emergency situation be dealt with ? 2

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CBSE Class-10 Exam 2020 : Question Paper (Gurung)

Posted: 24 Aug 2020 05:08 AM PDT

(Download) CBSE Class-12 Sample Paper 2019-20 : Basic Concepts Of Health & Disease And Medical Terminolgy

Posted: 23 Aug 2020 11:39 PM PDT

(Download) CBSE Class-12 Sample Paper 2019-20 : Basic Concepts Of Health & Disease And Medical Terminolgy

Class: XII
BASIC CONCEPTS OF HEALTH & DISEASE AND MEDICAL TERMINOLGY (729)

Sample Question Paper 2019-20

SECTION –A

Answer any 10 questions out of the given 12 questions:

1. Define health care delivery system. 

2. What is clinic? 

3. Define coronary artery disease. 

4. What does it mean to have a healthy environment? 

5. What are the environmental pressures? 

6. What do you mean by sterilization? 

7. What is the difference between mycology and osteology? 

8. What do you mean by median line? 

9. What is the difference between abduction and adduction? 

10. Give an example of hinge joint. 

11. What is illness and disease? 

12. What do you mean by vector?

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(Download) CBSE Class-10 Sample Paper And Marking Scheme 2019-20: Food Production

Posted: 23 Aug 2020 11:30 PM PDT

(Download) CBSE Class-10 Sample Paper And Marking Scheme 2019-20:

Food Production

(Food Production)

SECTION –A

Tick the correct answer (1mark each).

Answer any 10 questions out of the given 12 questions:
1.Which one of the following helps in growth and repair of body   
(a) Carbohydrates 
(b) Proteins
(c) Fats
(d) Vitamins and minerals

2.An example of cold soup   
(a) Tomato soup 
(b) Sweet corn soup 
(c) Sarki soup
(d) Vegetable soup

3.They are one bite size piece of the decorated bread slice   
(a) Canapes 
(b) Pasta 
(c) Salads
(d) Sandwiches

4. Name the moist heat method of cooking.  
(a) Baking
(b) Radiation
(c) Broiling
(d) Simmering

5.For preparing French fries apart from frying which other method of cooking is generally used   
(a) Poaching 
(b) Braising 
(c) Blanching
(d) Roasting

6.Waxy potatoes are used for making   
(a) Salads
(b) Koftas
(c) Cutlets
(d) Halwa

7.Lettuce is used in salad as   
(a) Garnish 
(b) Body 
(c) Dressing
(d) Base

8.The bread used for sandwich making should be stored at   
(a) High temperature 
(b) Room temperature 
(c) Refrigerator temperature
(d) Deep freezer temperature

9. Tomatoes have this pigment   
(a) Chlorophyll
(b) Flavones 
(c) Anthocyanin
(d) Carotenoids

10.An example of dressing used in salad is   
(a) Mayonnaise
(b) Fruits
(c) Vegetables
(d) Mint sprigs

11.Soups which are made of dry legumes or fresh starchy vegetables   
(a) Veloute soup 
(b) Puree soup 
(c) Clear soup
(d) Broth

12.A good source of carbohydrates   
(a) Milk 
(b) Fish 
(c) Fruits
(d) Rice

Very ShortQuestions: (2 marks each).

Answer any 5 questions out of the given 7 questions:
13. Indicate four objectives of cooking food. (2)
14. Give the effect of heat on fats and its two sources. (2)
15. How are clear soups prepared? (2)
16. Present the main purpose of filling and spread used in sandwich preparation. (2)
17. What points you should keep in mind while selecting carrots? (2)
18. Tell the effect of acidic and alkaline medium on cooking of vegetables. (2)
19. Differentiate between bis ue and chowder soups. (2)

ShortQuestions: (3 marks each).

Answer any 5 questions out of the given 7 questions:
20.Discuss various cooking methods using fat. (3)
21. Suggest six tips to preserve nutrients while cooking in kitchen. (3)
22. Distinguish between simple, aggregate and multiple fruits. (3)
23. Give a brief description of Mulligatawny, French onion soup and Minestrone soup. (3)
24. How vegetable salad is different from protein salad? Give one example of each vegetable and protein salad. (3)
25. Write about Pepo, Drupes and Pome fruits. (3)
26. Tell about cold open sandwich and cold close sandwich alongwith an example for each. (3)

SECTION –B

Long/Essay type questions (5 marks each).
Answer any 3 questions out of the given 5 questions:
27.Illustrate any five each uses of fruits and selection criteria of fruits. (5)
28.Explain any five cuts of vegetables and fruits. (5)
29. (a) Name two ingredients used as seasoning in salad. (1+2+2=5)
(b) (Differentiate betweeni) Fruit and pasta salad
(ii) Simple and compound salad
30. Define salad and give one function of each base, body, dressing and garnish in preparation of salad. (5)
31. Describe the principles of heat transfer. Differentiate between roasting and grilling. 

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(Download) CBSE Class-10 Sample Paper And Marking Scheme 2019-20 Basic Agriculture

Posted: 23 Aug 2020 11:24 PM PDT

(Download) CBSE Class-10 Sample Paper And Marking Scheme 2019-20:

Basic Agriculture

(Basic Agriculture)

SECTION –A

Tick the correct answer (1mark each).

Answer any 10 questions out of the given 12 questions:

1. Which one among the following is the variety of wheat?
a. Kalyan Sona 
b. Pusa Hybrid-10
c. Jaya
d. 1121

2. Rose is commercially propagated by
a. Seed
b. Veneer grafting
c. T budding
d. Root cutting

3. Cabbage belongs to family
a. Brassicaceae
b. Solanaceae
c. Cucurbitaceae
d. Rosaceae

4. Which is the best breed of buffalo for milk production?
a. Murrah
b. Neeli Ravi
c. Surti
d. Mehsana

5. The best breed of poultry for egg production is….
a. Plymouth Rock
b. Rhode Iceland Red
c. Aseel
d. White Leg Horn

6. Fat content is maximum in......................milk
a. Cow
b. Goat
c. Camel
d. Buffalo

7. Cleistogamy is found in crops like
a. Pea
b. Maize
c. Wheat
d. Mango

8. Breeder seed is a progeny of
a. Foundation seed
b. Certified seed
c. Farmers seed
d. Nucleus Seed

9. Anardana is a dried product prepared from
a. Wild pomegranate
b. Cultivated pomegranate
c. Citrus
d. Apple

10. Apis mellifera was first introduced in India at
a. Nainital 
b. Kangra 
c. Kodaikanal
d. Ooty

11. National Dairy  Research Institute is located at
a. Delhi
b. Bangalore
c. Hyderabad 
d. Karnal

12. Indian Agricultural Research Institute is located at
a. New Delhi
b. Bangalore
c. Hyderabad 
d. Karnal
Very short answer type questions (  13-19, 2 marks each).

Attempt any five questions 5 x 2 = 10
13. Write two high yielding varieties each of wheat.

14. Write two major diseases of pulses.

15. Write two major pests of pulses.

16. Name two exotic breeds of cow.

17. Enlist coagulated milk products.

18 Classify milk on basis of fat and SNF.

19. Define the male sterility and self-incompatibility.

ShortQuestions: (3 marks each).

Answer any 5 questions out of the given 7 questions:
20. List the three pulse crops of India and write their seed rates.

21. Discuss briefly the major problems of mango.

22. Write most suitable breeds of animals for different purposes.

23. Make a flowchart of ice cream preparation.

24. Write different value added products of fruits and vegetables.

25. List different types of honeybees found in India.

26. Write work distribution among different categories of honeybees.

SECTION – B

Long/Essay type questions (5 marks each).
Answer any 3 questions out of the given 5 questions:
27. Write short notes on any TWO of the following
a. Bitter pit
b. Fruit cracking
c. Major diseases of cole crops

28. What is pollination? Discuss mechanism favouring self and cross-pollination in crop plants.

29. Discuss cultivation of apple under the following heads: Soil and climate, major varieties, propagation and rootstock and major diseases and their management.

30. Discuss cultivation of rice under the following heads: Soil and climate, major varieties, propagation and major diseases and their management.

31. Enlist major oils seed crops grown in India. Discuss cultivation of mustard.
 

 

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(Download) CBSE Class-12 Sample Paper 2019-20 : Auto Engineering

Posted: 23 Aug 2020 11:21 PM PDT

(Download) CBSE Class-12 Sample Paper 2019-20 : Auto Engineering

Class: XII
AUTO ENGINEERING (627)
Sample Question Paper 2019-20

SECTION –A

Mark the correct answer (1mark each).
Answer any 10 questions out of the given 12 questions:

1. The vehicles which are generally running in hilly-road, are given.
a. Positive camber
b. Zero camber
c. Negative camber
d. None of the above

2. Maximum inclination of propeller shaft fitted with Hooke’s Joint (cross or spider type Joint) is
a. 100
b. 150
c. 200
d. 250

3. The purpose of a suspension damper is to
a. Resist the road shocks
b. Reduce the ‘bump’ stroke of the spring
c. Absorb the energy stored in the spring
d. All above.


4. The battery case is  made of______________________________.
a. Poly-propylene
b. Hard-rubber
c. Plastic base materials
d. Any of the above materials

5. The distributor serves the following purposes in the ignition system
a. It operates break and make mechanism
b. It distributes high tension current to spark plug at correct time
c. both (a) and (b)
d. None of above

6. The oil forms an oil film at the metal surface to reduce the ________________between the metal surfaces.
a. Speed.
b. Friction.
c. Both a and b.
d. None of above.

7. Generally, when the temperature is increased, the viscosity of oil will _______.
a. remains same.
b. increase.
c. decrease.
d. None of above.

8. The ______________ of pressure cap opens to allow reverse flow back into the radiator when the coolant temperature drops after engine operation.
a. pressure valve
b. vacuum valve
c. both a and b
d. none of above.

9. If the camber on the two front wheels is not equal, the vehicle will try to pull towards the side where.
a. The camber is higher.
b. The camber is lower
c. Both (a) & (b)
d. None of the above

10. For a private new car the initial fitness certificate is valid for
a. 20 years
b. 15 years
c. 10 years
d. 5 years

11. The violation of which of the following road safety signs is a legal offence?
a. Mandatory signs
b. Cautionary signs
c. Information signs
d. All of the above

12. _________________allows coolant to circulate freely only within the engine block until the operating temperature is reached.
a. Radiator
b. Hose pipe
c. Thermostat
d. none of the above.

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