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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

Srushti

Asked: December 20, 2023In: Class 10 Science

The image of an object formed by a mirror is real, inverted and is of magnification -1. If the image is at the distance of 30 cm from the mirror, where is the object placed? Find the position of the image if the object is now moved 20 cm towards the mirror. What is the nature of the image obtained? Justify your answer with the help of ray diagram.

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

Srushti

Asked: December 20, 2023In: Class 10 Science

Sunita takes a mirror which is depressed at the centre and mounts it on a mirror stand. An erect and enlarged image of her face is formed. She places the mirror on a stand along a meter scale at 15 cm mark. In front of this mirror, she mounts a white screen and moves it back and forth along the meter scale till a sharp, well-defined inverted image of a distant tree is formed on the screen at 35 cm mark. (i) Name the mirror and find its focal length. (ii) Why does Sunita get sharp image of the distant building at 35 cm mark.

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

Srushti

Asked: December 20, 2023In: Class 10 Science

A student conducted an experiment to show CO2 is released during respiration. List two precautions that he/she must take for obtaining correct observations.

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

Srushti

Asked: December 20, 2023In: Class 10 Science

Today, Riya performs two set of experiments carefully to study the length of the foam formed are as follows: Set I: Riya takes 10 ml (mililitre) of distilled water in test tube “A” and adds 5-6 drops of liquid soap in it and shakes the test tube. Set II: Riya takes 10 ml of distilled water in a test tube “A” and adds 5-6 drops of liquid soap with half spoonful of Calcium sulfate (or calcium sulphate, CaSO4) in it and shakes vigorouisly the test tube. What do you think. Write your observation and reason.

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

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