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Home/science/Page 2

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daanish
daanish
Asked: July 11, 2021In: Class 10 Science

What is biodiversity? What will happen if biodiversity of an area is not preserved? Mention one effect of it.

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

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Answer
daanish
daanish
Asked: July 11, 2021In: Class 10 Science

List two tests for experimentally distinguishing between an alcohol and a carboxylic acid and describe how these tests are performed.

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

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daanish
daanish
Asked: July 11, 2021In: Class 10 Science

Taking the example of an element of atomic number 16, explain how the electronic configuration of the atom of an element relates to its position in the modern periodic table and how valency of an element is calculated on the basis of its atomic numb

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

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  • 1 1 Answer
  • 44 Views
  • 7 Votes
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daanish
daanish
Asked: July 11, 2021In: Class 10 Science

List six specific characteristics of sexual reproduction.

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

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  • 1 1 Answer
  • 20 Views
  • 7 Votes
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daanish
daanish
Asked: July 11, 2021In: Class 10 Science

What are chromosomes? Explain how in sexually reproducing organisms the number of chromosomes in the progeny is maintained.

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

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daanish
daanish
Asked: July 11, 2021In: Class 10 Science

List four points of significance of reproductive health in a society. Name any two areas related to reproductive health which have improved over the past 50 years in our country.

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

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  • 1 1 Answer
  • 31 Views
  • 7 Votes
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daanish
daanish
Asked: July 11, 2021In: Class 10 Science

Explain with an example for each, how the following provides evidences in favour of evolution in organisms: (a) Homologous organs (b) analogous organs (c) Fossils.

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

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  • 1 1 Answer
  • 18 Views
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daanish
daanish
Asked: July 11, 2021In: Class 10 Science

Explain the following: (a) Speciation (b) Natural Selection

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

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  • 1 1 Answer
  • 37 Views
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daanish
daanish
Asked: July 11, 2021In: Class 10 Science

Differentiate between biodegradable and non-biodegradable substances with the help of one example each. List two changes in habit that people must adopt to dispose non-biodegradable waste, for saving the environment.

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

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  • 1 1 Answer
  • 31 Views
  • 7 Votes
Answer
daanish
daanish
Asked: July 11, 2021In: Class 10 Science

(a) Name the human male reproductive organ that produces sperms and also secretes a hormone. Write the functions of the secreted hormone. (b) Name the parts of the human female reproductive system where (i) fertilizations takes place, (iii) implantation of the fertilized egg occurs. Explain how the embryo gets nourishment inside the mother’s body.

CBSC Session 2021-22. Sample Papers of Class 10th, Science. NCERT Important Questions of Class 10th Science. NCERT Science Solutions of Class 10th. NCERT book extra Questions. CBSC Board and other State board.

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  • 1 1 Answer
  • 32 Views
  • 7 Votes
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