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Prasant

Asked: December 22, 2023In: Class 10 Science

Create a terrestrial food chain depicting four trophic levels. Why do we not find food chains of more than four trophic levels in nature?

CBSE class 10 science sample question paper 2023-2024

Prasant

Asked: December 21, 2023In: Class 10 Science

i) What is meant by power of a lens? (ii) You have three lenses L1, L2 and L3 of powers +10D, +5D and -10D respectively. State the nature and focal length of each lens. (iii) Explain which of the three lenses will form a virtual and magnified image of an object placed at 15 cm from the lens. (iv) Draw the ray diagram in support of your answer.

CBSE Class 10 Science Sample Question Paper new 2023-2024 with Solutions

Prasant

Asked: December 21, 2023In: Class 10 Science

Two lamps, one rated 100 W at 220 V and the other 200 W at 220V are connected (i) in series and (ii) in parallel to electric main supply of 220V. Find the current drawn in each case.

Rationalised syllabus CBSE Class 10 Science Sample Question Paper 2023-2024

Prasant

Asked: December 21, 2023In: Class 10 Science

The figure below shows three cylindrical copper conductors along with their face areas and lengths. Compare the resistance and the resistivity of the three conductors. Justify your answer.

CBSE Class 10 Science Sample Question Paper new 2023-2024 with Solutions

Prasant

Asked: December 21, 2023In: Class 10 Science

The flow of energy between various or many components of the environment has been extensively studied. List four findings.

CBSE Science Class 10 SQP, Sample Question Paper 2023-2024

Prasant

Asked: December 21, 2023In: Class 10 Science

a) How will you show experimentally that metals are good conductors of heat. b) Describe the extraction of Mercury metal from its ore Cinnabar (HgS).

NCERT, Rationalised syllabus, CBSE Class 10 Science Sample Question Paper 2023-2024

Prasant

Asked: December 19, 2023In: Class 10 Science

What happens when aqueous solutions of Sodium sulphate and Barium chloride are mixed? Give a balanced equation for the reaction with state symbols. Name and define the type of chemical reaction involved in the above change.

2024 CBSE NCERT Class 10 science sample question paper and solution

Prasant

Asked: December 18, 2023In: Class 10 Science

Explain the ways in which glucose is broken down in absence of oxygen.

2023-2024 CBSE science class 10th sample question paper and answer pdf free download

Prasant

Asked: December 18, 2023In: Class 10 Science

In the electrolysis of water, a) Name the gas collected at anode and cathode b) Why is the volume of gas collected at one electrode double than the other? c) What would happen if dilute H2SO4 is not added to water?

Latest CBSE class 10 science SQP sample question paper and answer 2023-2024 free download

Prasant

Asked: December 16, 2023In: Class 10 Science

The gene for red hair is recessive to the gene for black hair. What will be the hair colour of a child if he inherits a gene for red colour from his mother and a gene for black hair from his father? Express with the help of flow chart.

CBSE class 10 science sample question paper with answer 2023-2024

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Prasant

Two lamps, one rated 100 W at 220 V and the other 200 W at 220V are connected (i) in series and (ii) in parallel to electric main supply of 220V. Find the current drawn in each case.

The figure below shows three cylindrical copper conductors along with their face areas and lengths. Compare the resistance and the resistivity of the three conductors. Justify your answer.

The flow of energy between various or many components of the environment has been extensively studied. List four findings.

a) How will you show experimentally that metals are good conductors of heat. b) Describe the extraction of Mercury metal from its ore Cinnabar (HgS).

What happens when aqueous solutions of Sodium sulphate and Barium chloride are mixed? Give a balanced equation for the reaction with state symbols. Name and define the type of chemical reaction involved in the above change.

Explain the ways in which glucose is broken down in absence of oxygen.

In the electrolysis of water, a) Name the gas collected at anode and cathode b) Why is the volume of gas collected at one electrode double than the other? c) What would happen if dilute H2SO4 is not added to water?

The gene for red hair is recessive to the gene for black hair. What will be the hair colour of a child if he inherits a gene for red colour from his mother and a gene for black hair from his father? Express with the help of flow chart.

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