CBSE Class 10 - Science - Management of Natural Resources - Very Short and Short Q and A (#cbsenotes)

Management of Natural Resources 

Very Short and Short Q and A from CBSE Papers 


Q1: What is coliform ?

Answer: It is a group of bacteria found in human intestine.


Q2: List any four stakeholders which may help in the conservation of forests.

Answer: People, the government, industrialists and Wildlife and nature enthusiasts.


Q3: What is reuse strategy ? Reuse strategy is considered better than the recycling strategy. Why ?

Answer: In reuse strategy, things are used again and again instead of throwing them. It is better than recycling of objects as no energy is used in this strategy for remaking of objects.


Q4: India has more than 50,000 strains of rice. Mention the level of biodiversity it represents.

Answer: It is a genetic variation within the species.


Q5: What do the three R’s refer to save the environment ? Which one of these would be the best for environment ?

Answer: Three R’s refers to Reduce, Recycle and Reuse.
Reducing wastage of energy is the best for environment.

CBSE Class 10 - SA2 (Pre) Social Science Sample Question Paper (2016-17) (#cbsepapers)

CBSE Class 10  - SA2 (Pre) Social Science Sample Question Paper (2016-17)

Jumbled Up Sentences (Set -3)

Jumbled Up Sentences

(Set-3)

Rearrange the following words and phrases to form meaningful sentences.


1. bike/ blue/./nitish/rode/his/new/

   __________________________________________________________________


2. There/./two/in/the/are/birds/nest/

   __________________________________________________________________


3. Mr. Shyam/ our/ has/teacher/ a/ named/ Timmy/./cat/

   __________________________________________________________________


4. park/./is/a/place/walk/for/lake/good/

   __________________________________________________________________

CBSE Class 10 - Marking Scheme of German Sample Question Paper (2016-17)

CBSE Class 10  - Marking Scheme of German Sample Question Paper (2016-17)


See here German Sample Question Paper (2016-17)

CBSE Class 9 -Science - Natural resources (Worksheet - Important Terms) (#cbseClass9Notes)

Natural Resources

Worksheet 

Important Terms

☛Following are the statements that define specific terms related to Natural resources. Identify the terms and fill in the blanks.


1. The outer crust of the Earth.

______________


2. The region which includes all the earth's liquid water, frozen water and small amounts of water vapor in the earth's atmosphere.

_____________________


3. The mass of air surrounding the Earth.

_____________________


4. The life-supporting zone of the Earth where the atmosphere, hydrosphere and lithosphere interact and make life possible.

_____________________

CBSE Circular: Restoring of Class X Board Examination with effect from the Academic Year 2017-18

CBSE Notification: Restoring of Class X Board Examination with effect from the Academic Year 2017-18

① CBSE is restoring Class 10 Board Examination from Academic Year 2017-18.

② You may download the circular copy from CBSE website.

③ The final examination will cover 100% syllabus.

④ Theory papers will carry 80 marks maximum. Maximum 20 marks will be given by schools as internal assessment.

⑤ There would be two mandatory Language papers. Students would have the choice to opt for a third language as well.

CBSE Class 10 - German Sample Question Paper (2016-17)

CBSE Class 10  - German Sample Question Paper (2016-17)

☛See Marking Scheme of German SQP (2016-17)

CBSE Class 7 - History (Our Pasts II)- Towns, Traders and Craft persons (Q and A)(#cbsenotes)

Towns, Traders and Craft persons

Questions and Answers based on Class 7 NCERT Chapter


Q1: Name the capital of Cholas during medieval period.

Answer: Thanjavur


Q2: Who built the Rajarajeshvara temple? Who was the architect of the temple?

Answer: The Rajarajeshvara temple was built by King Rajaraja Chola. Kunjaramallan Rajaraja Perunthachchan was the architect of the temple.


Q3: Name two examples of temple towns in Tamil Nadu.

Answer: Kanchipuram and Madurai.


Q4: Name three examples of Pilgrimage centres which slowly developed into townships.

Answer: Vrindavan (Uttar Pradesh) and Tiruvannamalai (Tamil Nadu)

CBSE Class 12 - Business Studies Sample Question Paper (2016-17) and Marking Scheme (#cbsepapers)(#cbseClass12BStudies)

CBSE Class 12  - Business Studies Sample Question Paper (2016-17) + Marking Scheme

☛See Business Studies Sample Question Paper 2016

CBSE Class 9 Maths - Surface Areas and Volumes - NCERT Exercise 13.6 (#cbsenotes) (#NCERTAnswers)

Surface Areas and Volumes (Cylinder)

EXERCISE 13.6

Q1: The circumference of the base of a cylindrical vessel is 132 cm and its height is 25 cm. How many litres of water can it hold? (1000 cm³ = 1l)

Answer: Given, h = 25 cm, 2πr = 132 cm.
⇒ 2πr = 132
⇒ 2 × (22/7) × r = 132
⇒ r = (132 × 7)/ (2 × 22) = 21cm

Volume = πr²h = (22/7) × 21 × 21 × 25
= 34650 cm³
= 34650/1000
= 34.65 litres  (Answer)


Q2: The inner diameter of a cylindrical wooden pipe is 24 cm and its outer diameter is 28 cm. The length of the pipe is 35 cm. Find the mass of the pipe, if 1 cm³ of wood has a mass of 0.6 g.

CBSE Class 10 - English (Communicative) - SA2- Marking Scheme of Sample Question Paper (2016-17) (#cbseExamPapers)

CBSE Class 10 - SA2 - English (Communicative)- Marking Scheme of Sample Question Paper (2016-17) 

☛See English (Communicative) Sample Question Paper 2016-17

CBSE Class 8/9/10/11/12: ⑬ Fun Facts about English Words (#englishgrammar) (#cbsenotes)

⑬ Fun Facts about English Words

① The following sentence contains all the alphabets of English (A to Z).

The quick brown fox jumps over the lazy dog 

Such type of sentences are called pangrams. Other examples of pangrams are:

The five boxing wizards jump quickly.

Pack my box with five dozen liquor jugs.

② Pneumonoultramicroscopicsilicovolcanoconioisis (a lung disease) is the longest word in the English language that appears in major dictionaries. Mostly, other longest words are also technical or biological terms.

CBSE Class 9 Maths - Surface Areas and Volumes - NCERT Exercise 13.5 (#cbsenotes) (#ncertsolutions)

Surface Areas and Volumes 

NCERT Exercise 13.5

Q1: A matchbox measures 4 cm × 2.5 cm × 1.5 cm. What will be the volume of a packet containing 12 such boxes?

Answer: Given, l = 4 cm, b = 2.5 cm, h = 1.5 cm
Volume of 1 matchbox = lbh
= 4 × 2.5 × 1.5 cm3 = 15 cm³
Volume of 12 matchboxes = 15 × 12  = 180 cm³ (Answer)


Q2: A cuboidal water tank is 6 m long, 5 m wide and 4.5 m deep. How many litres of water can it hold? (1 m³ = 1000 l)

Answer: Given,  l = 6 m, b = 5 m, h = 4.5 m
Volume of the tank = lbh
= 6 × 5 × 4.5 = 135 m³
= 135 × 1000 litres = 1,35,000 litres (Answer)

CBSE Class 10 - English (Communicative)- Sample Question Paper (2016-17)

CBSE Class 10 - SA2 - English (Communicative)- Sample Question Paper (2016-17) 

☛See Marking Scheme of Class 10  English (Comm.) SQP 2016-17

CBSE Class 9 - Maths - Surface Areas and Volumes (NCERT Ex 13.4) (#cbseclass9notes)

Surface Areas and Volumes - Spheres

(NCERT Ex 13.4)

Q1: Find the surface area of a sphere of radius 
(i) 10.5 cm
(ii) 5.6 cm
(iii) 14 cm

Answer:
(i) r = 10.5 cm
Surface area of the sphere = 4πr²
= 4 × (22/7) × (10.5)²
  = 1386 cm² (Answer)

(ii) r = 5.6 cm
Surface area of the sphere = 4πr²
= 4 × (22/7) × (5.6)²
= 394.24 cm² (Answer)

(iii) r = 14 cm
Surface area of the sphere = 4πr²
= 4 × (22/7) × 14 × 14
= 2464 cm² (Answer)


Q2: Find the surface area of sphere of a diameter :
(i) 14 cm
(ii) 21 cm
(iii) 3.5 m

CBSE Class 12 - English (Elective)- Marking Scheme of Sample Question Paper (2016-17)

CBSE Class 12 - English (Elective)- Marking Scheme of Sample Question Paper (2016-17) 


☛See English (Elective) Sample Question Paper (2016-17)

CBSE Class 9 - Maths - Surface Areas and Volumes - NCERT Ex 13.3 (#cbsenotes)

Surface Areas and Volumes

EXERCISE 13.3

Q1: Diameter of the base of a cone is 10.5 cm and its slant height is 10 cm. Find its curved surface area.

Answer: Given r = 10.5/2 = 5.25 cm, l = 10 cm.

Curved surface area (CSA) of the cone = πrl
= (22/7) × 5.25 × 10  = 165 cm² (Answer)



Q2: Find the total surface area of a cone, if its slant height is 21 m and diameter of its base is 24 m.

Answer: Given, l = 21m, r = 24/2 = 12 m
TSA (cone) = πr(l + r)
= (22/7) × 12 (21 + 12)
= 1244.57 m² (Answer)

CBSE Class 12 - English (Elective)- Sample Question Paper (2016-17) (#cbsepapers)

CBSE Class 12 - English (Elective)- Sample Question Paper (2016-17) 


☛See English (Elective) Marking Scheme of Sample Question Paper (2016-17)

CBSE Class 9 Maths - Surface Areas and Volumes - NCERT Exercise 13.2 (#cbseclass9Notes)

Surface Areas and Volumes

NCERT Exercise 13.2

Q1: The curved surface area of a right circular cylinder of height 14 cm is 88 cm². Find the diameter of the base of the cylinder.

Answer: Given, h = 14 cm,
curved, surface area (CSA) = 88 cm², r = ?
CSA  = 2πrh
⇒ 88 = 2 × (22/7) × r × 14
⇒ 88 = 44 × 2 × r
⇒ r = 88/88 = 1
∴ diameter = 2r = 2 cm


Q2: It is required to make a closed cylindrical tank of height 1 m and base diameter 140 cm from a metal sheet. How many square metres of the sheet are required for the same?.

CBSE Class 10 - संस्कृत (Sanskrit Communicative) SA2 Sample Question Paper (2016-17)

CBSE Class 10 - संस्कृत  (Sanskrit Communicative) Sample Question Paper (2016-17)