Mayur Arya

Asked: December 23, 2023In: Class 10 Science

Identify the products formed when 1 mL of dil. Hydrochloric acid is added to 1g of Sodium metal.

Sodium is a highly reactive alkali metal with atomic number 11. It’s silver-white, soft, and abundant in nature. It reacts vigorously with water, producing sodium hydroxide and hydrogen gas.

Mayur Arya

Asked: December 23, 2023In: Class 10 Science

Write the chemical name and chemical formula of the salt used to remove permanent hardness of water.

Water hardness is a measure of the concentration of calcium and magnesium ions. It affects soap effectiveness and can lead to scale buildup. Hard water is classified as temporary or permanent.

Mayur Arya

Asked: December 23, 2023In: Class 10 Science

List any two observations when Ferrous Sulphate (FeSO₄) is heated in a dry test tube?

Ferrous sulfate is a chemical compound with the formula FeSO₄, commonly used as a supplement to treat iron deficiency anemia and in various industrial applications, including water treatment and dyeing.

Mayur Arya

Asked: December 22, 2023In: Trending

What is the story, review and collection of Dunki movie Shah Rukh Khan Starrer?

Dunki (transl. Donkey flight) movie is a 2023 Indian Hindi-language comedy drama film based on the illegal immigration technique. In Dunki movie Shah Rukh Khan plays as Hardayal “Hardy” Singh Dhillon.

Mayur Arya

Asked: December 22, 2023In: Class 10 Science

Why does the Sun appear white at noon?

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

Mayur Arya

Asked: December 22, 2023In: Class 10 Science

Explain the process of double circulation with the help of a flow chart.

2024 CBSE Science Class 10 Sample Question Paper pdf

Mayur Arya

Asked: December 22, 2023In: Class 10 Science

A lens produces a magnification of -0.5. Is this a converging or diverging lens? If the focal length of the lens is 6 cm, draw a ray diagram showing the image formation in this case. A girl was playing with a thin beam of light from a laser torch by directing it from different directions on a convex lens held vertically. She was surprised to see that in a particular direction, the beam of light continues to move along the same direction after passing through the lens. State the reason for her observation. Draw a ray diagram to support your answer.

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

Mayur Arya

Asked: December 22, 2023In: Class 10 Science

Explain the reason for the following: (i) Aluminium oxide is called an amphoteric oxide. (ii) An iron strip dipped in a blue copper sulphate solution turns the blue solution pale green. (iii) Hydrogen gas is not evolved when most metals react with nitric acid. (iv) Calcium does not occur in free state in nature. (v) Sodium or potassium metals are kept immersed under kerosene.

CBSE NCERT Science Class 10 Sample Question Paper 2023-2024

Mayur Arya

Asked: December 22, 2023In: Class 10 Science

Metal X is found in nature as its sulphide XS. It is used in the galvanisation of iron articles. Identify the metal X. How will you convert this sulphide ore into the metal? Explain with equations.

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

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

CBSE sample question paper 2023-24 class 10 science

Mayur Arya

Identify the products formed when 1 mL of dil. Hydrochloric acid is added to 1g of Sodium metal.

Write the chemical name and chemical formula of the salt used to remove permanent hardness of water.

List any two observations when Ferrous Sulphate (FeSO₄) is heated in a dry test tube?

Why does the Sun appear white at noon?

Explain the process of double circulation with the help of a flow chart.

Metal X is found in nature as its sulphide XS. It is used in the galvanisation of iron articles. Identify the metal X. How will you convert this sulphide ore into the metal? Explain with equations.

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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