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Srushti

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Srushti

Asked: December 26, 2023In: Class 10 Science

Ravi cultivated mustard, a plant with bisexual flowers, on his farm. His plants were diseased due to a gene defect and therefore had reduced yield. Ravi removed the stamens from the diseased plants and also planted fresh disease-free mustard plants where he removed the pistils. How will Ravi’s strategy help in improving the yield of mustard?

Bisexual flowers, possessing both male and female reproductive organs, facilitate self-pollination or cross-pollination. Examples include hibiscus and lilies, enhancing reproductive flexibility in plant species.

Srushti

Asked: December 26, 2023In: Trending

Who is Atal Bihari Vajpayee?

Atal Bihari Vajpayee (1924–2018) was an Indian politician who served as the 10th Prime Minister of India. He was born on December 25, 1924, in Gwalior, Madhya Pradesh, and passed away on August 16, 2018.

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

Srushti

Asked: December 20, 2023In: Class 10 Science

How is ozone both beneficial and damaging? How can depletion of ozone layer be prevented?

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

Srushti

Asked: December 18, 2023In: Class 10 Science

Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter , a resistor of 4Ω in series with a combination of two resistors (8Ω each) in parallel and a voltmeter across parallel combination. Each of them dissipate maximum energy and can withstand a maximum power of 16W without melting. Find the maximum current that can flow through the three resistors.

NCERT science sample question paper CBSE class 10 with answers 2023-2024

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

Srushti

Asked: December 18, 2023In: Class 10 Science

An object of height 1.2m is placed before a concave mirror of focal length 20 cm so that a real image is formed at a distance of 60 cm from it. Find the position of an object. What will be the height of the image formed?

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

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