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Mayur Arya

Asked: December 19, 2023In: Class 10 Science

What do you observe when you drop a few drops of acetic acid to a test tube containing: a) Phenolphthalein b) Universal indicator c) distilled water d) sodium hydrogen carbonate

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Subham Kumar

Asked: December 19, 2023In: Class 10 Science

“pH has a great importance in our daily life” explain by giving three examples.

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Srushti

Asked: December 18, 2023In: Class 10 Science

Why is there a need to harness non-conventional sources of energy? Give two main reasons.

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

Rajshekhar

Asked: December 18, 2023In: Class 10 Science

An element “X” has mass number 35 and the number of neutrons, is 18. Identify the group number and period of “X”.

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Rajshekhar

Asked: December 18, 2023In: Class 10 Science

A student obtained a sharp image of a lighted candle on a screen using a convex lens. Now he wants to focus a distant lamp on a far away electric pole. In which direction should the lens be moved for this purpose with respect to the screen, to get a sharp image on the screen? Justify your answer.

Class 10 CBSE science sample question paper and answer free download 2023-2024

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