cbse class 10 science sample question paper 2023-2024 – Page 14 – Discussion Forum

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Kiara Singh

Asked: December 19, 2023In: Class 10 Science

A variegated leaf with green and yellow patches in used for an experiment to prove that chlorophyll is required for photosynthesis. Before the experiment the green portions (A), and the pale-yellow portions (B), are observed. Now, answer that – what will be the colour of ‘A’ just before and after the starch test? Write also the equation of the process of photosynthesis and mark, as well as validate from which molecule the by-product is obtained.

Rationalised syllabus 2023-2024 CBSE Class 10 sample question paper

Subham Kumar

Asked: December 19, 2023In: Class 10 Science

Noopur needs a lens of power -4.5D for correction of her vision. a) What kind of defect in vision is she suffering from? b) What is the focal length and nature of the corrective lens? c) Draw ray diagrams showing the (a) defected eye and (b) correction for this defect. d) What are the causes of this defect?

CBSE class 10 science sample question paper 2023-2024

Subham Kumar

Asked: December 19, 2023In: Class 10 Science

A compound which is prepared from gypsum has the property of hardening when mixed with a proper quantity of water. Identify the compound and write its chemical formula. Write the chemical equation for its preparation. Mention any one use of the compound.

NCERT, CBSE Class 10 Science sample question paper 2023-2024

Mayur Arya

Asked: December 16, 2023In: Class 10 Science

A student has to project a three times magnified image of a candle flame on a wall. Name the type of the lens (converging/ diverging) required for the purpose. It the candle flame is at a distance of 6 m from the wall, find the focal length of the lens.

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

Subham Kumar

Asked: December 16, 2023In: Class 10 Science

What are isomers? “Isomers of the first three members of alkane series are not possible”. Give reason to justify this statement and draw structures of two isomers of butane, C4 H10.

NCERT CBSE class 10 science sample question paper 2023-2024

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